987 changed files with 21280 additions and 65817 deletions
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@ -1,5 +1,6 @@
 # Lines starting with '#' are comments.
 # Each line is a file pattern followed by one or more owners.
+
 accounts/usbwallet              @karalabe
 accounts/scwallet               @gballet
 accounts/abi                    @gballet @MariusVanDerWijden
--- a/.github/workflows/pre-release.yml
+++ b/.github/workflows/pre-release.yml
@ -82,28 +82,28 @@ jobs:
      # ==============================

      - name: Upload Linux Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'ubuntu-latest'
        with:
          name: linux
          path: ./build/bin/geth

      - name: Upload MacOS Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'macos-latest'
        with:
          name: macos
          path: ./build/bin/geth
      
      - name: Upload Windows Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'windows-latest'
        with:
          name: windows
          path: ./build/bin/geth.exe

      - name: Upload ARM-64 Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'ubuntu-latest'
        with:
          name: arm64
@ -125,25 +125,25 @@ jobs:
      # ==============================

      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: linux
          path: ./linux
      
      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: macos
          path: ./macos
      
      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: windows
          path: ./windows
      
      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: arm64
          path: ./arm64
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@ -81,28 +81,28 @@ jobs:
      # ==============================

      - name: Upload Linux Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'ubuntu-latest'
        with:
          name: linux
          path: ./build/bin/geth

      - name: Upload MacOS Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'macos-latest'
        with:
          name: macos
          path: ./build/bin/geth
      
      - name: Upload Windows Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'windows-latest'
        with:
          name: windows
          path: ./build/bin/geth.exe

      - name: Upload ARM-64 Build
-        uses: actions/upload-artifact@v4.3.3
+        uses: actions/upload-artifact@v3
        if: matrix.os == 'ubuntu-latest'
        with:
          name: arm64
@ -124,25 +124,25 @@ jobs:
      # ==============================

      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: linux
          path: ./linux
      
      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: macos
          path: ./macos
      
      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: windows
          path: ./windows
      
      - name: Download Artifacts
-        uses: actions/download-artifact@v4.1.7
+        uses: actions/download-artifact@v3
        with:
          name: arm64
          path: ./arm64
--- a/.gitignore
+++ b/.gitignore
@ -52,5 +52,3 @@ cmd/geth/__debug_bin
 cmd/bootnode/bootnode
 graphql/__debug_bin
 logs/
-
-tests/spec-tests/
--- a/.nancy-ignore
+++ b/.nancy-ignore
@ -1,3 +0,0 @@
-CVE-2024-34478 # "CWE-754: Improper Check for Unusual or Exceptional Conditions." This vulnerability is BTC only, BSC does not have the issue.
-CVE-2024-6104 # "CWE-532: Information Exposure Through Log Files" This is caused by the vulnerabilities go-retryablehttp@v0.7.4, it is only used in cmd devp2p, impact is limited. will upgrade to v0.7.7 later
-CVE-2024-8421 # "CWE-400: Uncontrolled Resource Consumption (Resource Exhaustion)" This vulnerability is caused by issues in the golang.org/x/net package. Even the latest version(v0.29.0) has not yet addressed it, but we will continue to monitor updates closely.
--- a/.travis.yml
+++ b/.travis.yml
@ -9,6 +9,18 @@ jobs:
        - azure-osx

  include:
+    # This builder only tests code linters on latest version of Go
+    - stage: lint
+      os: linux
+      dist: bionic
+      go: 1.21.x
+      env:
+        - lint
+      git:
+        submodules: false # avoid cloning ethereum/tests
+      script:
+        - go run build/ci.go lint
+
    # These builders create the Docker sub-images for multi-arch push and each
    # will attempt to push the multi-arch image if they are the last builder
    - stage: build
@ -54,6 +66,7 @@ jobs:
      go: 1.21.x
      env:
        - azure-linux
+        - GO111MODULE=on
      git:
        submodules: false # avoid cloning ethereum/tests
      addons:
@ -84,17 +97,15 @@ jobs:
    - stage: build
      if: type = push
      os: osx
-      osx_image: xcode14.2
      go: 1.21.x
      env:
        - azure-osx
+        - GO111MODULE=on
      git:
        submodules: false # avoid cloning ethereum/tests
      script:
        - go run build/ci.go install -dlgo
        - go run build/ci.go archive -type tar -signer OSX_SIGNING_KEY -signify SIGNIFY_KEY -upload gethstore/builds
-        - go run build/ci.go install -dlgo -arch arm64
-        - go run build/ci.go archive -arch arm64 -type tar -signer OSX_SIGNING_KEY -signify SIGNIFY_KEY -upload gethstore/builds

    # These builders run the tests
    - stage: build
@ -102,8 +113,10 @@ jobs:
      arch: amd64
      dist: bionic
      go: 1.21.x
+      env:
+        - GO111MODULE=on
      script:
-        - travis_wait 30 go run build/ci.go test $TEST_PACKAGES
+        - go run build/ci.go test $TEST_PACKAGES

    - stage: build
      if: type = pull_request
@ -111,15 +124,19 @@ jobs:
      arch: arm64
      dist: bionic
      go: 1.20.x
+      env:
+        - GO111MODULE=on
      script:
-        - travis_wait 30 go run build/ci.go test $TEST_PACKAGES
+        - go run build/ci.go test $TEST_PACKAGES

    - stage: build
      os: linux
      dist: bionic
      go: 1.20.x
+      env:
+        - GO111MODULE=on
      script:
-        - travis_wait 30 go run build/ci.go test $TEST_PACKAGES
+        - go run build/ci.go test $TEST_PACKAGES

    # This builder does the Ubuntu PPA nightly uploads
    - stage: build
@ -129,6 +146,7 @@ jobs:
      go: 1.21.x
      env:
        - ubuntu-ppa
+        - GO111MODULE=on
      git:
        submodules: false # avoid cloning ethereum/tests
      addons:
@ -152,6 +170,7 @@ jobs:
      go: 1.21.x
      env:
        - azure-purge
+        - GO111MODULE=on
      git:
        submodules: false # avoid cloning ethereum/tests
      script:
@ -163,6 +182,8 @@ jobs:
      os: linux
      dist: bionic
      go: 1.21.x
+      env:
+        - GO111MODULE=on
      script:
-        - travis_wait 30 go run build/ci.go test  -race $TEST_PACKAGES
+        - go run build/ci.go test  -race $TEST_PACKAGES

--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -1,382 +1,4 @@
 # Changelog
-## v1.4.15
-### BUGFIX
-* [\#2680](https://github.com/bnb-chain/bsc/pull/2680) txpool: apply miner's gasceil to txpool
-* [\#2688](https://github.com/bnb-chain/bsc/pull/2688) txpool: set default GasCeil from 30M to 0
-* [\#2696](https://github.com/bnb-chain/bsc/pull/2696) miner: limit block size to eth protocol msg size
-* [\#2684](https://github.com/bnb-chain/bsc/pull/2684) eth: Add sidecars when available to broadcasted current block
-
-### FEATURE
-* [\#2672](https://github.com/bnb-chain/bsc/pull/2672) faucet: with mainnet balance check, 0.002BNB at least
-* [\#2678](https://github.com/bnb-chain/bsc/pull/2678) beaconserver: simulated beacon api server for op-stack
-* [\#2687](https://github.com/bnb-chain/bsc/pull/2687) faucet: support customized token
-* [\#2698](https://github.com/bnb-chain/bsc/pull/2698) faucet: add example for custimized token
-* [\#2706](https://github.com/bnb-chain/bsc/pull/2706) faucet: update DIN token faucet support
-
-### IMPROVEMENT
-* [\#2677](https://github.com/bnb-chain/bsc/pull/2677) log: add some p2p log
-* [\#2679](https://github.com/bnb-chain/bsc/pull/2679) build(deps): bump actions/download-artifact in /.github/workflows
-* [\#2662](https://github.com/bnb-chain/bsc/pull/2662) metrics: add some extra feature flags as node stats
-* [\#2675](https://github.com/bnb-chain/bsc/pull/2675) fetcher: Sleep after marking block as done when requeuing
-* [\#2695](https://github.com/bnb-chain/bsc/pull/2695) CI: nancy ignore CVE-2024-8421
-* [\#2689](https://github.com/bnb-chain/bsc/pull/2689) consensus/parlia: wait more time when processing huge blocks
-
-## v1.4.14
-
-### BUGFIX
-* [\#2643](https://github.com/bnb-chain/bsc/pull/2643)core: fix cache for receipts
-* [\#2656](https://github.com/bnb-chain/bsc/pull/2656)ethclient: fix BlobSidecars api
-* [\#2657](https://github.com/bnb-chain/bsc/pull/2657)fix: update prunefreezer’s offset when pruneancient and the dataset has pruned block
-
-### FEATURE
-* [\#2661](https://github.com/bnb-chain/bsc/pull/2661)config: setup Mainnet 2 hardfork date: HaberFix & Bohr
-
-### IMPROVEMENT
-* [\#2578](https://github.com/bnb-chain/bsc/pull/2578)core/systemcontracts: use vm.StateDB in UpgradeBuildInSystemContract
-* [\#2649](https://github.com/bnb-chain/bsc/pull/2649)internal/debug: remove memsize
-* [\#2655](https://github.com/bnb-chain/bsc/pull/2655)internal/ethapi: make GetFinalizedHeader monotonically increasing
-* [\#2658](https://github.com/bnb-chain/bsc/pull/2658)core: improve readability of the fork choice logic
-* [\#2665](https://github.com/bnb-chain/bsc/pull/2665)faucet: bump and resend faucet transaction if it has been pending for a while
-
-## v1.4.13
-
-### BUGFIX
-* [\#2602](https://github.com/bnb-chain/bsc/pull/2602) fix: prune-state when specify --triesInMemory 32
-* [\#2579](https://github.com/bnb-chain/bsc/pull/00025790) fix: only take non-mempool tx to calculate bid price
-
-### FEATURE
-* [\#2634](https://github.com/bnb-chain/bsc/pull/2634) config: setup Testnet Bohr hardfork date
-* [\#2482](https://github.com/bnb-chain/bsc/pull/2482) BEP-341: Validators can produce consecutive blocks
-* [\#2502](https://github.com/bnb-chain/bsc/pull/2502) BEP-402: Complete Missing Fields in Block Header to Generate Signature
-* [\#2558](https://github.com/bnb-chain/bsc/pull/2558) BEP-404: Clear Miner History when Switching Validators Set
-* [\#2605](https://github.com/bnb-chain/bsc/pull/2605) feat: add bohr upgrade contracts bytecode
-* [\#2614](https://github.com/bnb-chain/bsc/pull/2614) fix: update stakehub bytecode after zero address agent issue fixed
-* [\#2608](https://github.com/bnb-chain/bsc/pull/2608) consensus/parlia: modify mining time for last block in one turn
-* [\#2618](https://github.com/bnb-chain/bsc/pull/2618) consensus/parlia: exclude inturn validator when calculate backoffTime
-* [\#2621](https://github.com/bnb-chain/bsc/pull/2621) core: not record zero hash beacon block root with Parlia engine
-
-### IMPROVEMENT
-* [\#2589](https://github.com/bnb-chain/bsc/pull/2589) core/vote: vote before committing state and writing block
-* [\#2596](https://github.com/bnb-chain/bsc/pull/2596) core: improve the network stability when double sign happens
-* [\#2600](https://github.com/bnb-chain/bsc/pull/2600) core: cache block after wroten into db
-* [\#2629](https://github.com/bnb-chain/bsc/pull/2629) utils: add GetTopAddr to analyse large traffic
-* [\#2591](https://github.com/bnb-chain/bsc/pull/2591) consensus/parlia: add GetJustifiedNumber and GetFinalizedNumber
-* [\#2611](https://github.com/bnb-chain/bsc/pull/2611) cmd/utils: add new flag OverridePassedForkTime
-* [\#2603](https://github.com/bnb-chain/bsc/pull/2603) faucet: rate limit initial implementation
-* [\#2622](https://github.com/bnb-chain/bsc/pull/2622) tests: fix evm-test CI
-* [\#2628](https://github.com/bnb-chain/bsc/pull/2628) Makefile: use docker compose v2 instead of v1
-
-## v1.4.12
-
-### BUGFIX
-* [\#2557](https://github.com/bnb-chain/bsc/pull/2557) fix: fix state inspect error after pruned state
-* [\#2562](https://github.com/bnb-chain/bsc/pull/2562) fix: delete unexpected block
-* [\#2566](https://github.com/bnb-chain/bsc/pull/2566) core: avoid to cache block before wroten into db
-* [\#2567](https://github.com/bnb-chain/bsc/pull/2567) fix: fix statedb copy
-* [\#2574](https://github.com/bnb-chain/bsc/pull/2574) core: adapt highestVerifiedHeader to FastFinality
-* [\#2542](https://github.com/bnb-chain/bsc/pull/2542) fix: pruneancient freeze from the previous position when the first time
-* [\#2564](https://github.com/bnb-chain/bsc/pull/2564) fix: the bug of blobsidecars and downloader with multi-database
-* [\#2582](https://github.com/bnb-chain/bsc/pull/2582) fix: remove delete and dangling side chains in prunefreezer
-
-### FEATURE
-* [\#2513](https://github.com/bnb-chain/bsc/pull/2513) cmd/jsutils: add a tool to get performance between a range of blocks
-* [\#2569](https://github.com/bnb-chain/bsc/pull/2569) cmd/jsutils: add a tool to get slash count
-* [\#2583](https://github.com/bnb-chain/bsc/pull/2583) cmd/jsutill: add log about validator name
-
-### IMPROVEMENT
-* [\#2546](https://github.com/bnb-chain/bsc/pull/2546) go.mod: update missing dependency
-* [\#2559](https://github.com/bnb-chain/bsc/pull/2559) nancy: ignore go-retryablehttp@v0.7.4 in .nancy-ignore
-* [\#2556](https://github.com/bnb-chain/bsc/pull/2556) chore: update greenfield cometbft version
-* [\#2561](https://github.com/bnb-chain/bsc/pull/2561) tests: fix unstable test
-* [\#2572](https://github.com/bnb-chain/bsc/pull/2572) core: clearup testflag for Cancun and Haber
-* [\#2573](https://github.com/bnb-chain/bsc/pull/2573) cmd/utils: support use NetworkId to distinguish chapel when do syncing
-* [\#2538](https://github.com/bnb-chain/bsc/pull/2538) feat: enhance bid comparison and reply bidding results && detail logs
-* [\#2568](https://github.com/bnb-chain/bsc/pull/2568) core/vote: not vote if too late for next in turn validator
-* [\#2576](https://github.com/bnb-chain/bsc/pull/2576) miner/worker: broadcast block immediately once sealed
-* [\#2580](https://github.com/bnb-chain/bsc/pull/2580) freezer: Opt freezer env checking
-
-## v1.4.11
-
-### BUGFIX
-* [\#2534](https://github.com/bnb-chain/bsc/pull/2534) fix: nil pointer when clear simulating bid
-* [\#2535](https://github.com/bnb-chain/bsc/pull/2535) upgrade: add HaberFix hardfork
-
-## v1.4.10
-### FEATURE
-NA
-
-### IMPROVEMENT
-* [\#2512](https://github.com/bnb-chain/bsc/pull/2512) feat: add mev helper params and func
-* [\#2508](https://github.com/bnb-chain/bsc/pull/2508) perf: speedup pbss trienode read
-* [\#2509](https://github.com/bnb-chain/bsc/pull/2509) perf: optimize chain commit performance for multi-database
-* [\#2451](https://github.com/bnb-chain/bsc/pull/2451) core/forkchoice: improve stability when inturn block not generate
-
-### BUGFIX
-* [\#2518](https://github.com/bnb-chain/bsc/pull/2518) fix: remove zero gasprice check for BSC
-* [\#2519](https://github.com/bnb-chain/bsc/pull/2519) UT: random failure of TestSnapSyncWithBlobs
-* [\#2515](https://github.com/bnb-chain/bsc/pull/2515) fix getBlobSidecars by ethclient
-* [\#2525](https://github.com/bnb-chain/bsc/pull/2525) fix: ensure empty withdrawals after cancun before broadcast
-
-## v1.4.9
-### FEATURE
-* [\#2463](https://github.com/bnb-chain/bsc/pull/2463)  utils: add check_blobtx.js
-* [\#2470](https://github.com/bnb-chain/bsc/pull/2470)  jsutils: faucet successful requests within blocks
-* [\#2467](https://github.com/bnb-chain/bsc/pull/2467)  internal/ethapi: add optional parameter for blobSidecars
-
-### IMPROVEMENT
-* [\#2462](https://github.com/bnb-chain/bsc/pull/2462)  cmd/utils: add a flag to change breathe block interval for testing
-* [\#2497](https://github.com/bnb-chain/bsc/pull/2497)  params/config: add Bohr hardfork
-* [\#2479](https://github.com/bnb-chain/bsc/pull/2479)  dev: ensure consistency in BPS bundle result
-
-### BUGFIX
-* [\#2461](https://github.com/bnb-chain/bsc/pull/2461)  eth/handler: check lists in body before broadcast blocks
-* [\#2455](https://github.com/bnb-chain/bsc/pull/2455)  cmd: fix memory leak when big dataset
-* [\#2466](https://github.com/bnb-chain/bsc/pull/2466)  sync: fix some sync issues caused by prune-block.
-* [\#2475](https://github.com/bnb-chain/bsc/pull/2475)  fix: move mev op to MinerAPI & add command to console
-* [\#2473](https://github.com/bnb-chain/bsc/pull/2473)  fix: limit the gas price of the mev bid
-* [\#2484](https://github.com/bnb-chain/bsc/pull/2484)  fix: fix inspect database error
-* [\#2481](https://github.com/bnb-chain/bsc/pull/2481)  fix: keep 9W blocks in ancient db when prune block
-* [\#2495](https://github.com/bnb-chain/bsc/pull/2495)  fix: add an empty freeze db
-* [\#2507](https://github.com/bnb-chain/bsc/pull/2507)  fix: waiting for the last simulation before pick best bid
-
-## v1.4.8
-### FEATURE
-* [\#2483](https://github.com/bnb-chain/bsc/pull/2483) core/vm: add secp256r1 into PrecompiledContractsHaber
-* [\#2400](https://github.com/bnb-chain/bsc/pull/2400) RIP-7212: Precompile for secp256r1 Curve Support
-
-### IMPROVEMENT
-NA
-
-### BUGFIX
-NA
-
-## v1.4.7
-### FEATURE
-* [\#2439](https://github.com/bnb-chain/bsc/pull/2439) config: setup Mainnet Tycho(Cancun) hardfork date
-
-### IMPROVEMENT
-* [\#2396](https://github.com/bnb-chain/bsc/pull/2396) metrics: add blockInsertMgaspsGauge to trace mgasps
-* [\#2411](https://github.com/bnb-chain/bsc/pull/2411) build(deps): bump golang.org/x/net from 0.19.0 to 0.23.0
-* [\#2435](https://github.com/bnb-chain/bsc/pull/2435) txpool: limit max gas when mining is enabled
-* [\#2438](https://github.com/bnb-chain/bsc/pull/2438) fix: performance issue when load journal
-* [\#2440](https://github.com/bnb-chain/bsc/pull/2440) nancy: add files .nancy-ignore
-
-### BUGFIX
-NA
-
-## v1.4.6
-### FEATURE
-* [\#2227](https://github.com/bnb-chain/bsc/pull/2227) core: separated databases for block data
-* [\#2404](https://github.com/bnb-chain/bsc/pull/2404) cmd, p2p: filter peers by regex on name
-
-### IMPROVEMENT
-* [\#2201](https://github.com/bnb-chain/bsc/pull/2201) chore: render system bytecode by go:embed
-* [\#2363](https://github.com/bnb-chain/bsc/pull/2363) feat: greedy merge tx in bid
-* [\#2389](https://github.com/bnb-chain/bsc/pull/2389) deps: update prsym to solve warning about quic-go version
-* [\#2341](https://github.com/bnb-chain/bsc/pull/2341) core/trie: persist TrieJournal to journal file instead of kv database
-* [\#2395](https://github.com/bnb-chain/bsc/pull/2395) fix: trieJournal format compatible old db format
-* [\#2406](https://github.com/bnb-chain/bsc/pull/2406) feat: adaptive for loading journal file or journal kv during loadJournal
-* [\#2390](https://github.com/bnb-chain/bsc/pull/2390) chore: fix function names in comment
-* [\#2399](https://github.com/bnb-chain/bsc/pull/2399) chore: fix some typos in comments
-* [\#2408](https://github.com/bnb-chain/bsc/pull/2408) chore: fix some typos in comments
-* [\#2416](https://github.com/bnb-chain/bsc/pull/2416) fix: fix function names
-* [\#2424](https://github.com/bnb-chain/bsc/pull/2424) feat: recommit bid when newBidCh is empty to maximize mev reward
-* [\#2430](https://github.com/bnb-chain/bsc/pull/2430) fix: oom caused by non-discarded mev simulation env
-* [\#2428](https://github.com/bnb-chain/bsc/pull/2428) chore: add metric & log for blobTx
-* [\#2419](https://github.com/bnb-chain/bsc/pull/2419) metrics: add doublesign counter
-
-### BUGFIX
-* [\#2244](https://github.com/bnb-chain/bsc/pull/2244) cmd/geth: fix importBlock
-* [\#2391](https://github.com/bnb-chain/bsc/pull/2391) fix: print value instead of pointer in ConfigCompatError
-* [\#2398](https://github.com/bnb-chain/bsc/pull/2398) fix: no import blocks before or equal to the finalized height
-* [\#2401](https://github.com/bnb-chain/bsc/pull/2401) fix: allow fast node to rewind after abnormal shutdown
-* [\#2403](https://github.com/bnb-chain/bsc/pull/2403) fix: NPE
-* [\#2423](https://github.com/bnb-chain/bsc/pull/2423) eth/gasprice: add query limit to defend DDOS attack
-* [\#2425](https://github.com/bnb-chain/bsc/pull/2425) fix: adapt journal for cmd
-
-## v1.4.5
-### FEATURE
-* [\#2378](https://github.com/bnb-chain/bsc/pull/2378) config: setup Testnet Tycho(Cancun) hardfork date
-
-### IMPROVEMENT
-* [\#2333](https://github.com/bnb-chain/bsc/pull/2333) remove code that will not be executed
-* [\#2369](https://github.com/bnb-chain/bsc/pull/2369) core: stateDb has no trie and no snap return err
-
-### BUGFIX
-* [\#2359](https://github.com/bnb-chain/bsc/pull/2359) triedb: do not open state freezer under notries
-
-## v1.4.4
-### FEATURE
-* [\#2279](https://github.com/bnb-chain/bsc/pull/2279) BlobTx: implement EIP-4844 on BSC
-* [\#2337](https://github.com/bnb-chain/bsc/pull/2337) 4844: bugfix and improve
-* [\#2339](https://github.com/bnb-chain/bsc/pull/2339) fix: missing block asigment WithSidecars
-* [\#2350](https://github.com/bnb-chain/bsc/pull/2350) cancun: change empty withdrawHash value of header
-* [\#2335](https://github.com/bnb-chain/bsc/pull/2335) upgrade: update system contracts bytes code and hardfork time of Feynman upgrade
-* [\#2323](https://github.com/bnb-chain/bsc/pull/2323) feat: export GasCeil in mev_params
-* [\#2357](https://github.com/bnb-chain/bsc/pull/2357) feat: add bid fee ceil in mev_params
-
-### IMPROVEMENT
-* [\#2321](https://github.com/bnb-chain/bsc/pull/2321) test: use full syncmode to run rpc node
-* [\#2338](https://github.com/bnb-chain/bsc/pull/2338) cmd: include more node info in metrics
-* [\#2342](https://github.com/bnb-chain/bsc/pull/2342) p2p: add metrics for inbound/outbound peers
-* [\#2334](https://github.com/bnb-chain/bsc/pull/2334) core: improve chain rewinding mechanism
-* [\#2352](https://github.com/bnb-chain/bsc/pull/2352) core: fix block report when chain is not setHead
-
-### BUGFIX
-NA
-
-## v1.4.3
-### FEATURE
-* [\#2241](https://github.com/bnb-chain/bsc/pull/2241) cmd/utils, core/rawdb, triedb/pathdb: flip hash to path scheme
-* [\#2312](https://github.com/bnb-chain/bsc/pull/2312) cmd/utils, node: switch to Pebble as the default db if none exists
-
-### IMPROVEMENT
-* [\#2228](https://github.com/bnb-chain/bsc/pull/2228) core: rephrase TriesInMemory log
-* [\#2234](https://github.com/bnb-chain/bsc/pull/2234) cmd/utils: disable snap protocol for fast node
-* [\#2236](https://github.com/bnb-chain/bsc/pull/2236) build(deps): bump github.com/quic-go/quic-go from 0.39.3 to 0.39.4
-* [\#2240](https://github.com/bnb-chain/bsc/pull/2240) core/state: fix taskResult typo
-
-* [\#2280](https://github.com/bnb-chain/bsc/pull/2280) cmd/utils, core: only full sync for fast nodes
-* [\#2298](https://github.com/bnb-chain/bsc/pull/2298) cmd, node: initialize ports with --instance
-* [\#2302](https://github.com/bnb-chain/bsc/pull/2302) cmd/geth, core/rawdb: add dbDeleteTrieState
-* [\#2304](https://github.com/bnb-chain/bsc/pull/2304) eth/ethconfig: remove overridekepler and overrideshanghai
-* [\#2307](https://github.com/bnb-chain/bsc/pull/2307) internal/ethapi: add net_nodeInfo
-* [\#2311](https://github.com/bnb-chain/bsc/pull/2311) Port cancun related changes from unreleased v1.14.0
-* [\#2313](https://github.com/bnb-chain/bsc/pull/2313) tests/truffle: use hbss to run test
-* [\#2314](https://github.com/bnb-chain/bsc/pull/2314) cmd/jsutil: dump MinGasPrice for validator
-* [\#2317](https://github.com/bnb-chain/bsc/pull/2317) feat: add mev metrics
-
-### BUGFIX
-* [\#2272](https://github.com/bnb-chain/bsc/pull/2272) parlia: add state prepare for internal SC transaction
-* [\#2277](https://github.com/bnb-chain/bsc/pull/2277) fix: systemTx should be always at the end of block
-* [\#2299](https://github.com/bnb-chain/bsc/pull/2299) fix: add FeynmanFix upgrade for a testnet issue
-* [\#2310](https://github.com/bnb-chain/bsc/pull/2310) core/vm: fix PrecompiledContractsCancun
-
-## v1.4.2
-### FEATURE
-* [\#2021](https://github.com/bnb-chain/bsc/pull/2021) feat: support separate trie database
-* [\#2224](https://github.com/bnb-chain/bsc/pull/2224) feat: support MEV
-
-### BUGFIX
-* [\#2268](https://github.com/bnb-chain/bsc/pull/2268) fix: ensure EIP-4788 not supported with Parlia Engine
-
-### Cancun Code Merge
-#### 4844 related
-[internal/ethapi: add support for blobs in eth_fillTransaction (#28839)](https://github.com/bnb-chain/bsc/commit/ac5aa672d3b85a1f74667a65a15398f072aa0b2a)
-[internal/ethapi: fix defaults for blob fields (#29037)](https://github.com/bnb-chain/bsc/commit/b47cf8fe1de4f97ce38417d8136a58812734a7a9)
-[ethereum, ethclient: add blob transaction fields in CallMsg (#28989)](https://github.com/bnb-chain/bsc/commit/9d537f543990d9013d73433dc58fd0e985d9b2b6)
-[core/txpool/blobpool: post-crash cleanup and addition/removal metrics(#28914)](https://github.com/bnb-chain/bsc/commit/62affdc9c5ea6f1a73fde42ac5ee5c9795877f88)
-[core/txpool/blobpool: update the blob db with corruption handling (#29001)](https://github.com/bnb-chain/bsc/commit/3c30de219f92120248b7b7aeeb2bef82305e9627)
-[core/txpool, eth, miner: pre-filter dynamic fees during pending tx retrieval (#29005)](https://github.com/bnb-chain/bsc/commit/593e303485473d9b9194792e4556a451c44dcc6c)
-[core/txpool, miner: speed up blob pool pending retrievals (#29008)](https://github.com/bnb-chain/bsc/commit/6fb0d0992bd4eb91faf1e081b3c4aa46adb0ef7d)
-[core/txpool, eth, miner: retrieve plain and blob txs separately (#29026)](https://github.com/bnb-chain/bsc/commit/f4852b8ddc8bef962d34210a4f7774b95767e421)
-[core/txpool: reject blob txs with blob fee cap below the minimum (#29081)](https://github.com/bnb-chain/bsc/commit/32d4d6e6160432be1cb9780a43253deda7708ced)
-[core/txpool/blobpool: reduce default database cap for rollout (#29090)](https://github.com/bnb-chain/bsc/commit/63aaac81007ad46b208570c17cae78b7f60931d4) 
-#### Clean Ups
-[cmd/devp2p, eth: drop support for eth/67 (#28956)](https://github.com/bnb-chain/bsc/commit/8a76a814a2b9e5b4c1a4c6de44cd702536104507)
-[all: remove the dependency from trie to triedb (#28824)](https://github.com/bnb-chain/bsc/commit/fe91d476ba3e29316b6dc99b6efd4a571481d888)
-#### Others
-[eth, miner: fix enforcing the minimum miner tip (#28933)](https://github.com/bnb-chain/bsc/commit/16ce7bf50fa71c907d1dc6504ed32a9161e71351)
-[cmd,internal/era: implement export-history subcommand(#26621)](https://github.com/bnb-chain/bsc/commit/1f50aa76318689c6e74d0c3b4f31421bf7382fc7)
-[node, rpc: add configurable HTTP request limit (#28948)](https://github.com/bnb-chain/bsc/commit/69f5d5ba1fe355ff7e3dee5a0c7e662cd82f1071)
-[tests: fix goroutine leak related to state snapshot generation (#28974)](https://github.com/bnb-chain/bsc/commit/8321fe2fda0b44d6df3750bcee28b8627525173b)
-[internal/ethapi:fix zero rpc gas cap in eth_createAccessList (#28846)](https://github.com/bnb-chain/bsc/commit/b87b9b45331f87fb1da379c5f17a81ebc3738c6e)
-[eth/tracers: Fix callTracer logs on onlyTopCall == true (#29068)](https://github.com/bnb-chain/bsc/commit/5a0f468f8cb15b939bd85445d33c614a36942a8e)
-
-## v1.4.1
-FEATURE
-NA
-
-BUGFIX
-* [\#2258](https://github.com/bnb-chain/bsc/pull/2258) core: skip checking state root existence when do snapsync by fast node
-* [\#2252](https://github.com/bnb-chain/bsc/pull/2252) fix: add missing args of `bls account generate-proof` cmd (#2252)
-
-IMPROVEMENT
-NA
-
-## v1.4.0
-#### RPC
-[internal/ethapi: implement eth_getBlockReceipts (#27702)](https://github.com/bnb-chain/bsc/commit/f1801a9feda8f81532c92077d2c9a8b785fd699b)
-[eth, rpc: add configurable option for wsMessageSizeLimit (#27801)](https://github.com/bnb-chain/bsc/commit/705a51e566bc9215975d08f27d23ddab7baa9dd7)
-[api/bind: add CallOpts.BlockHash to allow calling contracts at a specific block hash (#28084)](https://github.com/bnb-chain/bsc/commit/b85c86022e130a76eeb588a5b36e97149b342188)
-[internal/ethapi: eth_call block parameter is optional (#28165)](https://github.com/bnb-chain/bsc/commit/adb9b319c9c61f092755000bf0fc4b3349f5cbbc)
-[internal/ethapi: ethSendTransaction check baseFee (#27834)](https://github.com/bnb-chain/bsc/commit/54a400ee717caf44603fac390314747c5592ee1b)
-#### Command
-[cmd/utils: fix a startup issue on deleted chaindata but dangling ancients(#27989)](https://github.com/bnb-chain/bsc/commit/00fead91c4f58bc7f56f81512280d3120860989c)
-[cmd/geth, internal/flags, go.mod: colorize cli help, support env vars(#28103)](https://github.com/bnb-chain/bsc/commit/d9fbb71d631d1ad0fb1846042e4c50ab893a6fbf)
-[cmd/rlpdump: add -pos flag, displaying byte positions (#28785)](https://github.com/bnb-chain/bsc/commit/1485814f89d8206bb4a1c8e10a4a2893920f683a)
-[cmd/geth: make it possible to autopilot removedb (#28725)](https://github.com/bnb-chain/bsc/commit/1010a79c7cbcdb4741e9f30e8cdc19c679ad7377)
-#### Flag
-[cmd/utils: restore support for txlookuplimit flag (#27917)](https://github.com/bnb-chain/bsc/commit/68855216c903eea9f952a1a7a56e69ea285f284b)
-[cmd/utils, eth: disallow invalid snap sync / snapshot flag combos (#28657)](https://github.com/bnb-chain/bsc/commit/d98d70f670297a4bfa86db1a67a9c024f7186f43)
-#### Client
-[ethclient: use 'input', not 'data' as field for transaction input (#28078)](https://github.com/bnb-chain/bsc/commit/5cf53f51ac556cfff2aee9d405efd336298a3aca)
-[ethclient: fix forwarding 1559 gas fields (#28462)](https://github.com/bnb-chain/bsc/commit/e91cdb49beb4b2a3872b5f2548bf2d6559e4f561)
-[ethclient/simulated: implement new sim backend (#28202)](https://github.com/bnb-chain/bsc/commit/2d08c9900996b5e798f40a3cc6b47f4e51dc487d)
-[ethclient: apply accessList field in toCallArg (#28832)](https://github.com/bnb-chain/bsc/commit/1c488298c807f4daa3cbe260efb88b81902a903d) 
-#### Tracer
-[eth/tracers: add position field for callTracer logs (#28389)](https://github.com/bnb-chain/bsc/commit/b1cec853bef98acc750298b1c9b8165f2ac6ce5a)
-[eth/tracers: tx-level state in debug_traceCall (#28460)](https://github.com/bnb-chain/bsc/commit/5fb8ebc9ecb226b84181420b9871c5f61cf4f77d)
-#### Txpool
-[eth/fetcher: allow underpriced transactions in after timeout (#28097)](https://github.com/bnb-chain/bsc/commit/2b7bc2c36b0d0efc83e62ba8e13723b943c4fa6e)
-#### Sync
-[eth/downloader: prevent pivot moves after state commit (#28126)](https://github.com/bnb-chain/bsc/commit/4fa3db49a1e485b8d110c87de6a44f460b45bb9a)
-[core, eth/downloader: fix genesis state missing due to state sync (#28124)](https://github.com/bnb-chain/bsc/commit/c53b0fef2ab8e2a00257b898cad5174e6b73f5fc)
-[core, accounts, eth, trie: handle genesis state missing (#28171)](https://github.com/bnb-chain/bsc/commit/73f5bcb75b562fcb3c109dd9c51f21956bc1f1f4)
-[eth/protocols/snap: fix snap sync failure on empty storage range (#28306)](https://github.com/bnb-chain/bsc/commit/1cb3b6aee4a16ab8e684da63f3cfcd9b961c43af)
-[core, eth, trie: filter out boundary nodes and remove dangling nodes in stacktrie (#28327)](https://github.com/bnb-chain/bsc/commit/ab04aeb855605de51dd1e933f45eb84ad877e715)
-[core, core/rawdb, eth/sync: no tx indexing during snap sync (#28703)](https://github.com/bnb-chain/bsc/commit/78a3c32ef4deb7755e3367e183639b66242654f7)
-#### PBSS Related
-[core/rawdb: skip pathdb state inspection in hashdb mode (#28108)](https://github.com/bnb-chain/bsc/commit/8d38b1fe62950e8675795abf63b7c978415ab7ba)
-[eth: abort on api operations not available in pbss-mode (#28104)](https://github.com/bnb-chain/bsc/commit/b9b99a12e5159c746ef04b7c8febc4db66817b72)
-[trie: remove internal nodes between shortNode and child in path mode (#28163)](https://github.com/bnb-chain/bsc/commit/4773dcbc81aac9d330df29446283361f5a7062c7)
-[trie/triedb/pathdb: improve dirty node flushing trigger (#28426)](https://github.com/bnb-chain/bsc/commit/ea2e66a58e48ef63566d5274c4a875e817a1cd39) 
-[core/rawdb: fsync the index file after each freezer write (#28483)](https://github.com/bnb-chain/bsc/commit/326fa00759d959061035becc9514660c24897053) 
-[trie: remove inconsistent trie nodes during sync in path mode (#28595)](https://github.com/bnb-chain/bsc/commit/e206d3f8975bd98cc86d14055dca40f996bacc60)
-[core, cmd, trie: fix the condition of pathdb initialization (#28718)](https://github.com/bnb-chain/bsc/commit/cca94792a4112687ce23e7041b95ccc7f4bf6123) 
-#### GraphQL
-[graphql: validate block params (#27876](https://github.com/bnb-chain/bsc/commit/5e89ff4d6b0df4bd54d20d90bee5a16abef6b9bc)
-[graphql: always set content-type to application/json (#28417)](https://github.com/bnb-chain/bsc/commit/2d7dba024d76603398907a595da98ad4df81b858)
-#### Cancun
-[core/types: support for optional blob sidecar in BlobTx (#27841)](https://github.com/bnb-chain/bsc/commit/2a6beb6a39d7cb3c5906dd4465d65da6efcc73cd)
-[core, params, beacon/engine: implement EIP 4788 BeaconRoot (#27849)](https://github.com/bnb-chain/bsc/commit/b8d38e76ef07c99d338c7bcd485881850382a58f) 
-[miner: add to build block with EIP-4844 blobs (#27875)](https://github.com/bnb-chain/bsc/commit/feb8f416acc3f067ecc8cbdabb8e70679547737a)
-[core: implement BLOBBASEFEE opcode (0x4a) (#28098)](https://github.com/bnb-chain/bsc/commit/c39cbc1a78aa275523c1b0ff9d21b16ba7bfa486)
-[core, eth, miner: start propagating and consuming blob txs (#28243)](https://github.com/bnb-chain/bsc/commit/a8a9c8e4b00c5b9f84242181839234b8e9fd54e3)
-[eth/fetcher: throttle tx fetches to 128KB responses (#28304)](https://github.com/bnb-chain/bsc/commit/a6deb2d994e644300bac43455b1c954976e7382e)
-[crypto/kzg4844: use the new trusted setup file and format (#28383)](https://github.com/bnb-chain/bsc/commit/a6a0ae45b69a95b38b7cb2d085e7833c88b72164)
-[internal/ethapi: handle blobs in API methods (#28786)](https://github.com/bnb-chain/bsc/commit/e5d5e09faae48dac3723634e2b1813e4f2e89535)
-#### P2P
-[cmd/devp2p, eth: drop eth/66 (#28239)](https://github.com/bnb-chain/bsc/commit/bc6d184872889224480cf9df58b0539b210ffa9e) 
-[cmd/devp2p: use bootnodes as crawl input (#28139)](https://github.com/bnb-chain/bsc/commit/41a0ad9f03ae8e8389fbe40131f4e6930b5beac5)
-[p2p/discover: add liveness check in collectTableNodes (#28686)](https://github.com/bnb-chain/bsc/commit/5b22a472d6aaaa17daf0543b5914ca1f2f5518a7)
-#### Test
-[build, tests: add execution-spec-tests (#26985)](https://github.com/bnb-chain/bsc/commit/f174ddba7af5c150ecad37430c167194d66d75f1) 
-[tests/fuzzers: update fuzzers to be based on go-native fuzzing (#28352)](https://github.com/bnb-chain/bsc/commit/d10a2f6ab727f79a0acff29c8147d54c5e4689ec) 
-[tests/fuzzers: move fuzzers into native packages (#28467)](https://github.com/bnb-chain/bsc/commit/2391fbc676d7464bd42e248155558a2bcd6ecf64)
-#### Clear Up
-[eth/downloader: remove header rollback mechanism (#28147)](https://github.com/bnb-chain/bsc/commit/b85c183ea7417e973dbbccd27b3fb7d7097b87dd)
-#### Others
-[core/forkid: correctly compute forkid when timestamp fork is activated in genesis (#27895)](https://github.com/bnb-chain/bsc/commit/32fde3f838d604fdeb7a3ada4f8e02d78301b83d)
-[core/vm/runtime: Add Random field to config (#28001)](https://github.com/bnb-chain/bsc/commit/0ba2d3cfa4e4a0a76cd457b8dc0f49bf1a79b723)
-[core/rawdb: no need to run truncateFile for readonly mode (#28145)](https://github.com/bnb-chain/bsc/commit/545f4c5547178bc8bde6af08b3ccaf68ca27f2c0)
-[core/bloombits: fix deadlock when matcher session hits an error (#28184)](https://github.com/bnb-chain/bsc/commit/c2cfe35f121cb88650b4d90c958bcc4214d0ce7f) 
-[core/state, tests: fix memory leak via fastcache (#28387)](https://github.com/bnb-chain/bsc/commit/c1d5a012ea4b824e902db14e47bf147d727c2657)
-[internal/ethapi: compact db missing key starts with 0xff (#28207)](https://github.com/bnb-chain/bsc/commit/46c850a9411d7ff15c1a0342fe29f359e6c390ae)
-[internal/ethapi: fix codehash lookup in eth_getProof (#28357)](https://github.com/bnb-chain/bsc/commit/8b99ad46027a455971ccf9bd1f425b9c58ec5855) 
-[eth: set networkID to chainID by default (#28250)](https://github.com/bnb-chain/bsc/commit/4d9f3cd5d751efccd501b08ab6cf38a83b5e2858)
-[eth: fix potential hang in waitSnapExtension (#28744)](https://github.com/bnb-chain/bsc/commit/18e154eaa24d5f7a8b3c48983ad591e6c10963ca)
-[metrics, cmd/geth: informational metrics (prometheus, influxdb, opentsb (#24877)](https://github.com/bnb-chain/bsc/commit/53f3c2ae656cd860a700751b6c5f81ca9c66503d)
-[ethdb/pebble: don't double-close iterator inside pebbleIterator (#28566)](https://github.com/bnb-chain/bsc/commit/6489a0dd1f98e9ce1c64c2eae93c8a88df7ae674)
-[trie/triedb/hashdb: take lock around access to dirties cache (#28542)](https://github.com/bnb-chain/bsc/commit/fa0df76f3cfd186a1f06f2b80aa5dbb89555b009) 
-[accounts: properly close managed wallets when closing manager (#28710)](https://github.com/bnb-chain/bsc/commit/d3452a22cc871306c62de52d19295914141863c0)
-[event: fix Resubscribe deadlock when unsubscribing after inner sub ends (#28359)](https://github.com/bnb-chain/bsc/commit/ffc6a0f36edda396a8421cf7a3c0feb88be20d0b)
-[all: replace log15 with slog (#28187)](https://github.com/bnb-chain/bsc/commit/28e73717016cdc9ebdb5fdb3474cfbd3bd2d2524)
-
-## v1.3.11
-BUGFIX
-* [\#2288](https://github.com/bnb-chain/bsc/pull/2288) fix: add FeynmanFix upgrade for a testnet issue
-
 ## v1.3.10
 FEATURE
 * [\#2047](https://github.com/bnb-chain/bsc/pull/2047) feat: add new fork block and precompile contract for BEP294 and BEP299
--- a/Dockerfile.alltools
+++ b/Dockerfile.alltools
@ -26,7 +26,7 @@ COPY --from=builder /go-ethereum/build/bin/* /usr/local/bin/

 EXPOSE 8545 8546 30303 30303/udp

-# Add some metadata labels to help programmatic image consumption
+# Add some metadata labels to help programatic image consumption
 ARG COMMIT=""
 ARG VERSION=""
 ARG BUILDNUM=""
--- a/30
+++ b/30
@ -7,26 +7,18 @@

 GOBIN = ./build/bin
 GO ?= latest
-GORUN = go run
+GORUN = env GO111MODULE=on go run
 GIT_COMMIT=$(shell git rev-parse HEAD)
 GIT_COMMIT_DATE=$(shell git log -n1 --pretty='format:%cd' --date=format:'%Y%m%d')

-#? geth: Build geth
 geth:
 	$(GORUN) build/ci.go install ./cmd/geth
 	@echo "Done building."
 	@echo "Run \"$(GOBIN)/geth\" to launch geth."

-#? faucet: Build faucet
-faucet:
-	$(GORUN) build/ci.go install ./cmd/faucet
-	@echo "Done building faucet"
-
-#? all: Build all packages and executables
 all:
 	$(GORUN) build/ci.go install

-#? test: Run the tests
 test: all
 	$(GORUN) build/ci.go test -timeout 1h

@ -34,25 +26,22 @@ truffle-test:
 	docker build . -f ./docker/Dockerfile --target bsc-genesis -t bsc-genesis
 	docker build . -f ./docker/Dockerfile --target bsc -t bsc
 	docker build . -f ./docker/Dockerfile.truffle -t truffle-test
-	docker compose -f ./tests/truffle/docker-compose.yml up genesis
-	docker compose -f ./tests/truffle/docker-compose.yml up -d bsc-rpc bsc-validator1
+	docker-compose -f ./tests/truffle/docker-compose.yml up genesis
+	docker-compose -f ./tests/truffle/docker-compose.yml up -d bsc-rpc bsc-validator1
 	sleep 30
-	docker compose -f ./tests/truffle/docker-compose.yml up --exit-code-from truffle-test truffle-test
-	docker compose -f ./tests/truffle/docker-compose.yml down
+	docker-compose -f ./tests/truffle/docker-compose.yml up --exit-code-from truffle-test truffle-test
+	docker-compose -f ./tests/truffle/docker-compose.yml down

-#? lint: Run certain pre-selected linters
 lint: ## Run linters.
 	$(GORUN) build/ci.go lint

-#? clean: Clean go cache, built executables, and the auto generated folder
 clean:
-	go clean -cache
+	env GO111MODULE=on go clean -cache
 	rm -fr build/_workspace/pkg/ $(GOBIN)/*

 # The devtools target installs tools required for 'go generate'.
 # You need to put $GOBIN (or $GOPATH/bin) in your PATH to use 'go generate'.

-#? devtools: Install recommended developer tools
 devtools:
 	env GOBIN= go install golang.org/x/tools/cmd/stringer@latest
 	env GOBIN= go install github.com/fjl/gencodec@latest
@ -61,12 +50,5 @@ devtools:
 	@type "solc" 2> /dev/null || echo 'Please install solc'
 	@type "protoc" 2> /dev/null || echo 'Please install protoc'

-#? help: Build docker image
 docker:
 	docker build --pull -t bnb-chain/bsc:latest -f Dockerfile .
-
-#? help: Get more info on make commands.
-help: Makefile
-	@echo " Choose a command run in go-ethereum:"
-	@sed -n 's/^#?//p' $< | column -t -s ':' |  sort | sed -e 's/^/ /'
-.PHONY: help
--- a/README.md
+++ b/README.md
@ -5,19 +5,20 @@ The goal of BNB Smart Chain is to bring programmability and interoperability to
 BNB Smart Chain starts its development based on go-ethereum fork. So you may see many toolings, binaries and also docs are based on Ethereum ones, such as the name “geth”.

 [![API Reference](
-https://pkg.go.dev/badge/github.com/ethereum/go-ethereum
+https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667
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-But from that baseline of EVM compatible, BNB Smart Chain introduces a system of 21 validators with Proof of Staked Authority (PoSA) consensus that can support short block time and lower fees. The most bonded validator candidates of staking will become validators and produce blocks. The double-sign detection and other slashing logic guarantee security, stability, and chain finality.
+But from that baseline of EVM compatible, BNB Smart Chain introduces  a system of 21 validators with Proof of Staked Authority (PoSA) consensus that can support short block time and lower fees. The most bonded validator candidates of staking will become validators and produce blocks. The double-sign detection and other slashing logic guarantee security, stability, and chain finality.

-**The BNB Smart Chain** will be:
+Cross-chain transfer and other communication are possible due to native support of interoperability. Relayers and on-chain contracts are developed to support that. BNB Beacon Chain DEX remains a liquid venue of the exchange of assets on both chains. This dual-chain architecture will be ideal for users to take advantage of the fast trading on one side and build their decentralized apps on the other side. **The BNB Smart Chain** will be:

 - **A self-sovereign blockchain**: Provides security and safety with elected validators.
 - **EVM-compatible**: Supports all the existing Ethereum tooling along with faster finality and cheaper transaction fees.
+- **Interoperable**: Comes with efficient native dual chain communication; Optimized for scaling high-performance dApps that require fast and smooth user experience.
 - **Distributed with on-chain governance**: Proof of Staked Authority brings in decentralization and community participants. As the native token, BNB will serve as both the gas of smart contract execution and tokens for staking.

-More details in [White Paper](https://github.com/bnb-chain/whitepaper/blob/master/WHITEPAPER.md).
+More details in [White Paper](https://www.bnbchain.org/en#smartChain).

 ## Key features

@ -33,8 +34,18 @@ To combine DPoS and PoA for consensus, BNB Smart Chain implement a novel consens

 1. Blocks are produced by a limited set of validators.
 2. Validators take turns to produce blocks in a PoA manner, similar to Ethereum's Clique consensus engine.
-3. Validator set are elected in and out based on a staking based governance on BNB Smart Chain.
-4. Parlia consensus engine will interact with a set of [system contracts](https://docs.bnbchain.org/bnb-smart-chain/staking/overview/#system-contracts) to achieve liveness slash, revenue distributing and validator set renewing func.
+3. Validator set are elected in and out based on a staking based governance on BNB Beacon Chain.
+4. The validator set change is relayed via a cross-chain communication mechanism.
+5. Parlia consensus engine will interact with a set of [system contracts](https://docs.bnbchain.org/docs/learn/system-contract) to achieve liveness slash, revenue distributing and validator set renewing func.
+
+ 
+### Light Client of BNB Beacon Chain
+
+To achieve the cross-chain communication from BNB Beacon Chain to BNB Smart Chain, need introduce a on-chain light client verification algorithm.
+It contains two parts:
+
+1. [Stateless Precompiled contracts](https://github.com/bnb-chain/bsc/blob/master/core/vm/contracts_lightclient.go) to do tendermint header verification and Merkle Proof verification.
+2. [Stateful solidity contracts](https://github.com/bnb-chain/bsc-genesis-contract/blob/master/contracts/TendermintLightClient.sol) to store validator set and trusted appHash.  

 ## Native Token

@ -42,6 +53,7 @@ BNB will run on BNB Smart Chain in the same way as ETH runs on Ethereum so that
 BNB will be used to:

 1. pay `gas` to deploy or invoke Smart Contract on BSC
+2. perform cross-chain operations, such as transfer token assets across BNB Smart Chain and BNB Beacon Chain.

 ## Building the source

@ -137,11 +149,13 @@ unzip testnet.zip
 #### 3. Download snapshot
 Download latest chaindata snapshot from [here](https://github.com/bnb-chain/bsc-snapshots). Follow the guide to structure your files.

+Note: If you encounter difficulties downloading the chaindata snapshot and prefer to synchronize from the genesis block on the Chapel testnet, remember to include the additional flag `--chapel` when initially launching Geth.
+
 #### 4. Start a full node
 ```shell
 ./geth --config ./config.toml --datadir ./node  --cache 8000 --rpc.allow-unprotected-txs --history.transactions 0

-## It is recommend to run fullnode with `--tries-verify-mode none` if you want high performance and care little about state consistency
+## It is recommand to run fullnode with `--tries-verify-mode none` if you want high performance and care little about state consistency
 ## It will run with Hash-Base Storage Scheme by default
 ./geth --config ./config.toml --datadir ./node  --cache 8000 --rpc.allow-unprotected-txs --history.transactions 0 --tries-verify-mode none

@ -169,7 +183,7 @@ This tool is optional and if you leave it out you can always attach to an alread

 #### 7. More

-More details about [running a node](https://docs.bnbchain.org/bnb-smart-chain/developers/node_operators/full_node/) and [becoming a validator](https://docs.bnbchain.org/bnb-smart-chain/validator/create-val/)
+More details about [running a node](https://docs.bnbchain.org/docs/validator/fullnode) and [becoming a validator](https://docs.bnbchain.org/docs/validator/create-val)

 *Note: Although some internal protective measures prevent transactions from
 crossing over between the main network and test network, you should always
@ -235,7 +249,9 @@ running web servers, so malicious web pages could try to subvert locally availab
 APIs!**

 ### Operating a private network
- [BSC-Deploy](https://github.com/bnb-chain/node-deploy/): deploy tool for setting up BNB Smart Chain.
+- [BSC-Deploy](https://github.com/bnb-chain/node-deploy/): deploy tool for setting up both BNB Beacon Chain, BNB Smart Chain and the cross chain infrastructure between them.
+- [BSC-Docker](https://github.com/bnb-chain/bsc-docker): deploy tool for setting up local BSC cluster in container.
+

 ## Running a bootnode

--- a/accounts/abi/abi.go
+++ b/accounts/abi/abi.go
@ -22,14 +22,13 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"math/big"

 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 )

 // The ABI holds information about a contract's context and available
-// invocable methods. It will allow you to type check function calls and
+// invokable methods. It will allow you to type check function calls and
 // packs data accordingly.
 type ABI struct {
 	Constructor Method
@ -247,65 +246,24 @@ func (abi *ABI) HasReceive() bool {
 // revertSelector is a special function selector for revert reason unpacking.
 var revertSelector = crypto.Keccak256([]byte("Error(string)"))[:4]

-// panicSelector is a special function selector for panic reason unpacking.
-var panicSelector = crypto.Keccak256([]byte("Panic(uint256)"))[:4]
-
-// panicReasons map is for readable panic codes
-// see this linkage for the details
-// https://docs.soliditylang.org/en/v0.8.21/control-structures.html#panic-via-assert-and-error-via-require
-// the reason string list is copied from ether.js
-// https://github.com/ethers-io/ethers.js/blob/fa3a883ff7c88611ce766f58bdd4b8ac90814470/src.ts/abi/interface.ts#L207-L218
-var panicReasons = map[uint64]string{
-	0x00: "generic panic",
-	0x01: "assert(false)",
-	0x11: "arithmetic underflow or overflow",
-	0x12: "division or modulo by zero",
-	0x21: "enum overflow",
-	0x22: "invalid encoded storage byte array accessed",
-	0x31: "out-of-bounds array access; popping on an empty array",
-	0x32: "out-of-bounds access of an array or bytesN",
-	0x41: "out of memory",
-	0x51: "uninitialized function",
-}
-
 // UnpackRevert resolves the abi-encoded revert reason. According to the solidity
 // spec https://solidity.readthedocs.io/en/latest/control-structures.html#revert,
-// the provided revert reason is abi-encoded as if it were a call to function
-// `Error(string)` or `Panic(uint256)`. So it's a special tool for it.
+// the provided revert reason is abi-encoded as if it were a call to a function
+// `Error(string)`. So it's a special tool for it.
 func UnpackRevert(data []byte) (string, error) {
 	if len(data) < 4 {
 		return "", errors.New("invalid data for unpacking")
 	}
-	switch {
-	case bytes.Equal(data[:4], revertSelector):
-		typ, err := NewType("string", "", nil)
-		if err != nil {
-			return "", err
-		}
-		unpacked, err := (Arguments{{Type: typ}}).Unpack(data[4:])
-		if err != nil {
-			return "", err
-		}
-		return unpacked[0].(string), nil
-	case bytes.Equal(data[:4], panicSelector):
-		typ, err := NewType("uint256", "", nil)
-		if err != nil {
-			return "", err
-		}
-		unpacked, err := (Arguments{{Type: typ}}).Unpack(data[4:])
-		if err != nil {
-			return "", err
-		}
-		pCode := unpacked[0].(*big.Int)
-		// uint64 safety check for future
-		// but the code is not bigger than MAX(uint64) now
-		if pCode.IsUint64() {
-			if reason, ok := panicReasons[pCode.Uint64()]; ok {
-				return reason, nil
-			}
-		}
-		return fmt.Sprintf("unknown panic code: %#x", pCode), nil
-	default:
+	if !bytes.Equal(data[:4], revertSelector) {
 		return "", errors.New("invalid data for unpacking")
 	}
+	typ, err := NewType("string", "", nil)
+	if err != nil {
+		return "", err
+	}
+	unpacked, err := (Arguments{{Type: typ}}).Unpack(data[4:])
+	if err != nil {
+		return "", err
+	}
+	return unpacked[0].(string), nil
 }
--- a/accounts/abi/abi_test.go
+++ b/accounts/abi/abi_test.go
@ -120,7 +120,6 @@ var methods = map[string]Method{
 }

 func TestReader(t *testing.T) {
-	t.Parallel()
 	abi := ABI{
 		Methods: methods,
 	}
@ -152,7 +151,6 @@ func TestReader(t *testing.T) {
 }

 func TestInvalidABI(t *testing.T) {
-	t.Parallel()
 	json := `[{ "type" : "function", "name" : "", "constant" : fals }]`
 	_, err := JSON(strings.NewReader(json))
 	if err == nil {
@ -172,7 +170,6 @@ func TestInvalidABI(t *testing.T) {
 //		constructor(uint256 a, uint256 b) public{}
 //	}
 func TestConstructor(t *testing.T) {
-	t.Parallel()
 	json := `[{	"inputs": [{"internalType": "uint256","name": "a","type": "uint256"	},{	"internalType": "uint256","name": "b","type": "uint256"}],"stateMutability": "nonpayable","type": "constructor"}]`
 	method := NewMethod("", "", Constructor, "nonpayable", false, false, []Argument{{"a", Uint256, false}, {"b", Uint256, false}}, nil)
 	// Test from JSON
@ -202,7 +199,6 @@ func TestConstructor(t *testing.T) {
 }

 func TestTestNumbers(t *testing.T) {
-	t.Parallel()
 	abi, err := JSON(strings.NewReader(jsondata))
 	if err != nil {
 		t.Fatal(err)
@ -240,7 +236,6 @@ func TestTestNumbers(t *testing.T) {
 }

 func TestMethodSignature(t *testing.T) {
-	t.Parallel()
 	m := NewMethod("foo", "foo", Function, "", false, false, []Argument{{"bar", String, false}, {"baz", String, false}}, nil)
 	exp := "foo(string,string)"
 	if m.Sig != exp {
@ -279,7 +274,6 @@ func TestMethodSignature(t *testing.T) {
 }

 func TestOverloadedMethodSignature(t *testing.T) {
-	t.Parallel()
 	json := `[{"constant":true,"inputs":[{"name":"i","type":"uint256"},{"name":"j","type":"uint256"}],"name":"foo","outputs":[],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"i","type":"uint256"}],"name":"foo","outputs":[],"payable":false,"stateMutability":"pure","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"i","type":"uint256"}],"name":"bar","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"i","type":"uint256"},{"indexed":false,"name":"j","type":"uint256"}],"name":"bar","type":"event"}]`
 	abi, err := JSON(strings.NewReader(json))
 	if err != nil {
@ -303,7 +297,6 @@ func TestOverloadedMethodSignature(t *testing.T) {
 }

 func TestCustomErrors(t *testing.T) {
-	t.Parallel()
 	json := `[{ "inputs": [	{ "internalType": "uint256", "name": "", "type": "uint256" } ],"name": "MyError", "type": "error"} ]`
 	abi, err := JSON(strings.NewReader(json))
 	if err != nil {
@ -318,7 +311,6 @@ func TestCustomErrors(t *testing.T) {
 }

 func TestMultiPack(t *testing.T) {
-	t.Parallel()
 	abi, err := JSON(strings.NewReader(jsondata))
 	if err != nil {
 		t.Fatal(err)
@ -356,7 +348,6 @@ func ExampleJSON() {
 }

 func TestInputVariableInputLength(t *testing.T) {
-	t.Parallel()
 	const definition = `[
 	{ "type" : "function", "name" : "strOne", "constant" : true, "inputs" : [ { "name" : "str", "type" : "string" } ] },
 	{ "type" : "function", "name" : "bytesOne", "constant" : true, "inputs" : [ { "name" : "str", "type" : "bytes" } ] },
@ -485,7 +476,6 @@ func TestInputVariableInputLength(t *testing.T) {
 }

 func TestInputFixedArrayAndVariableInputLength(t *testing.T) {
-	t.Parallel()
 	abi, err := JSON(strings.NewReader(jsondata))
 	if err != nil {
 		t.Error(err)
@ -660,7 +650,6 @@ func TestInputFixedArrayAndVariableInputLength(t *testing.T) {
 }

 func TestDefaultFunctionParsing(t *testing.T) {
-	t.Parallel()
 	const definition = `[{ "name" : "balance", "type" : "function" }]`

 	abi, err := JSON(strings.NewReader(definition))
@ -674,7 +663,6 @@ func TestDefaultFunctionParsing(t *testing.T) {
 }

 func TestBareEvents(t *testing.T) {
-	t.Parallel()
 	const definition = `[
 	{ "type" : "event", "name" : "balance" },
 	{ "type" : "event", "name" : "anon", "anonymous" : true},
@ -751,7 +739,6 @@ func TestBareEvents(t *testing.T) {
 //
 //	receipt{status=1 cgas=23949 bloom=00000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000040200000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 logs=[log: b6818c8064f645cd82d99b59a1a267d6d61117ef [75fd880d39c1daf53b6547ab6cb59451fc6452d27caa90e5b6649dd8293b9eed] 000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158 9ae378b6d4409eada347a5dc0c180f186cb62dc68fcc0f043425eb917335aa28 0 95d429d309bb9d753954195fe2d69bd140b4ae731b9b5b605c34323de162cf00 0]}
 func TestUnpackEvent(t *testing.T) {
-	t.Parallel()
 	const abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"receive","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"}],"name":"receivedAddr","type":"event"}]`
 	abi, err := JSON(strings.NewReader(abiJSON))
 	if err != nil {
@ -790,7 +777,6 @@ func TestUnpackEvent(t *testing.T) {
 }

 func TestUnpackEventIntoMap(t *testing.T) {
-	t.Parallel()
 	const abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"receive","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"}],"name":"receivedAddr","type":"event"}]`
 	abi, err := JSON(strings.NewReader(abiJSON))
 	if err != nil {
@ -841,7 +827,6 @@ func TestUnpackEventIntoMap(t *testing.T) {
 }

 func TestUnpackMethodIntoMap(t *testing.T) {
-	t.Parallel()
 	const abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"receive","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[],"name":"send","outputs":[{"name":"amount","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"addr","type":"address"}],"name":"get","outputs":[{"name":"hash","type":"bytes"}],"payable":true,"stateMutability":"payable","type":"function"}]`
 	abi, err := JSON(strings.NewReader(abiJSON))
 	if err != nil {
@ -892,7 +877,6 @@ func TestUnpackMethodIntoMap(t *testing.T) {
 }

 func TestUnpackIntoMapNamingConflict(t *testing.T) {
-	t.Parallel()
 	// Two methods have the same name
 	var abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"get","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[],"name":"send","outputs":[{"name":"amount","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"addr","type":"address"}],"name":"get","outputs":[{"name":"hash","type":"bytes"}],"payable":true,"stateMutability":"payable","type":"function"}]`
 	abi, err := JSON(strings.NewReader(abiJSON))
@ -976,7 +960,6 @@ func TestUnpackIntoMapNamingConflict(t *testing.T) {
 }

 func TestABI_MethodById(t *testing.T) {
-	t.Parallel()
 	abi, err := JSON(strings.NewReader(jsondata))
 	if err != nil {
 		t.Fatal(err)
@ -1009,7 +992,6 @@ func TestABI_MethodById(t *testing.T) {
 }

 func TestABI_EventById(t *testing.T) {
-	t.Parallel()
 	tests := []struct {
 		name  string
 		json  string
@ -1076,7 +1058,6 @@ func TestABI_EventById(t *testing.T) {
 }

 func TestABI_ErrorByID(t *testing.T) {
-	t.Parallel()
 	abi, err := JSON(strings.NewReader(`[
 		{"inputs":[{"internalType":"uint256","name":"x","type":"uint256"}],"name":"MyError1","type":"error"},
 		{"inputs":[{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"string","name":"b","type":"string"},{"internalType":"address","name":"c","type":"address"}],"internalType":"struct MyError.MyStruct","name":"x","type":"tuple"},{"internalType":"address","name":"y","type":"address"},{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"string","name":"b","type":"string"},{"internalType":"address","name":"c","type":"address"}],"internalType":"struct MyError.MyStruct","name":"z","type":"tuple"}],"name":"MyError2","type":"error"},
@ -1107,7 +1088,6 @@ func TestABI_ErrorByID(t *testing.T) {
 // TestDoubleDuplicateMethodNames checks that if transfer0 already exists, there won't be a name
 // conflict and that the second transfer method will be renamed transfer1.
 func TestDoubleDuplicateMethodNames(t *testing.T) {
-	t.Parallel()
 	abiJSON := `[{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"}],"name":"transfer","outputs":[{"name":"ok","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"},{"name":"data","type":"bytes"}],"name":"transfer0","outputs":[{"name":"ok","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"},{"name":"data","type":"bytes"},{"name":"customFallback","type":"string"}],"name":"transfer","outputs":[{"name":"ok","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"}]`
 	contractAbi, err := JSON(strings.NewReader(abiJSON))
 	if err != nil {
@ -1137,7 +1117,6 @@ func TestDoubleDuplicateMethodNames(t *testing.T) {
 //		event send();
 //	}
 func TestDoubleDuplicateEventNames(t *testing.T) {
-	t.Parallel()
 	abiJSON := `[{"anonymous": false,"inputs": [{"indexed": false,"internalType": "uint256","name": "a","type": "uint256"}],"name": "send","type": "event"},{"anonymous": false,"inputs": [],"name": "send0","type": "event"},{	"anonymous": false,	"inputs": [],"name": "send","type": "event"}]`
 	contractAbi, err := JSON(strings.NewReader(abiJSON))
 	if err != nil {
@ -1165,7 +1144,6 @@ func TestDoubleDuplicateEventNames(t *testing.T) {
 //		event send(uint256, uint256);
 //	}
 func TestUnnamedEventParam(t *testing.T) {
-	t.Parallel()
 	abiJSON := `[{ "anonymous": false, "inputs": [{	"indexed": false,"internalType": "uint256",	"name": "","type": "uint256"},{"indexed": false,"internalType": "uint256","name": "","type": "uint256"}],"name": "send","type": "event"}]`
 	contractAbi, err := JSON(strings.NewReader(abiJSON))
 	if err != nil {
@ -1195,13 +1173,9 @@ func TestUnpackRevert(t *testing.T) {
 		{"", "", errors.New("invalid data for unpacking")},
 		{"08c379a1", "", errors.New("invalid data for unpacking")},
 		{"08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000d72657665727420726561736f6e00000000000000000000000000000000000000", "revert reason", nil},
-		{"4e487b710000000000000000000000000000000000000000000000000000000000000000", "generic panic", nil},
-		{"4e487b7100000000000000000000000000000000000000000000000000000000000000ff", "unknown panic code: 0xff", nil},
 	}
 	for index, c := range cases {
-		index, c := index, c
 		t.Run(fmt.Sprintf("case %d", index), func(t *testing.T) {
-			t.Parallel()
 			got, err := UnpackRevert(common.Hex2Bytes(c.input))
 			if c.expectErr != nil {
 				if err == nil {
--- a/accounts/abi/argument.go
+++ b/accounts/abi/argument.go
@ -80,7 +80,7 @@ func (arguments Arguments) isTuple() bool {
 func (arguments Arguments) Unpack(data []byte) ([]interface{}, error) {
 	if len(data) == 0 {
 		if len(arguments.NonIndexed()) != 0 {
-			return nil, errors.New("abi: attempting to unmarshal an empty string while arguments are expected")
+			return nil, errors.New("abi: attempting to unmarshall an empty string while arguments are expected")
 		}
 		return make([]interface{}, 0), nil
 	}
@ -95,7 +95,7 @@ func (arguments Arguments) UnpackIntoMap(v map[string]interface{}, data []byte)
 	}
 	if len(data) == 0 {
 		if len(arguments.NonIndexed()) != 0 {
-			return errors.New("abi: attempting to unmarshal an empty string while arguments are expected")
+			return errors.New("abi: attempting to unmarshall an empty string while arguments are expected")
 		}
 		return nil // Nothing to unmarshal, return
 	}
--- a/accounts/abi/bind/auth.go
+++ b/accounts/abi/bind/auth.go
@ -56,7 +56,7 @@ func NewTransactor(keyin io.Reader, passphrase string) (*TransactOpts, error) {
 }

 // NewKeyStoreTransactor is a utility method to easily create a transaction signer from
-// a decrypted key from a keystore.
+// an decrypted key from a keystore.
 //
 // Deprecated: Use NewKeyStoreTransactorWithChainID instead.
 func NewKeyStoreTransactor(keystore *keystore.KeyStore, account accounts.Account) (*TransactOpts, error) {
@ -117,7 +117,7 @@ func NewTransactorWithChainID(keyin io.Reader, passphrase string, chainID *big.I
 }

 // NewKeyStoreTransactorWithChainID is a utility method to easily create a transaction signer from
-// a decrypted key from a keystore.
+// an decrypted key from a keystore.
 func NewKeyStoreTransactorWithChainID(keystore *keystore.KeyStore, account accounts.Account, chainID *big.Int) (*TransactOpts, error) {
 	if chainID == nil {
 		return nil, ErrNoChainID
--- a/accounts/abi/bind/backend.go
+++ b/accounts/abi/bind/backend.go
@ -37,10 +37,6 @@ var (
 	// on a backend that doesn't implement PendingContractCaller.
 	ErrNoPendingState = errors.New("backend does not support pending state")

-	// ErrNoBlockHashState is raised when attempting to perform a block hash action
-	// on a backend that doesn't implement BlockHashContractCaller.
-	ErrNoBlockHashState = errors.New("backend does not support block hash state")
-
 	// ErrNoCodeAfterDeploy is returned by WaitDeployed if contract creation leaves
 	// an empty contract behind.
 	ErrNoCodeAfterDeploy = errors.New("no contract code after deployment")
@ -69,27 +65,11 @@ type PendingContractCaller interface {
 	PendingCallContract(ctx context.Context, call ethereum.CallMsg) ([]byte, error)
 }

-// BlockHashContractCaller defines methods to perform contract calls on a specific block hash.
-// Call will try to discover this interface when access to a block by hash is requested.
-// If the backend does not support the block hash state, Call returns ErrNoBlockHashState.
-type BlockHashContractCaller interface {
-	// CodeAtHash returns the code of the given account in the state at the specified block hash.
-	CodeAtHash(ctx context.Context, contract common.Address, blockHash common.Hash) ([]byte, error)
-
-	// CallContractAtHash executes an Ethereum contract call against the state at the specified block hash.
-	CallContractAtHash(ctx context.Context, call ethereum.CallMsg, blockHash common.Hash) ([]byte, error)
-}
-
 // ContractTransactor defines the methods needed to allow operating with a contract
 // on a write only basis. Besides the transacting method, the remainder are helpers
 // used when the user does not provide some needed values, but rather leaves it up
 // to the transactor to decide.
 type ContractTransactor interface {
-	ethereum.GasEstimator
-	ethereum.GasPricer
-	ethereum.GasPricer1559
-	ethereum.TransactionSender
-
 	// HeaderByNumber returns a block header from the current canonical chain. If
 	// number is nil, the latest known header is returned.
 	HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error)
@ -100,22 +80,48 @@ type ContractTransactor interface {
 	// PendingNonceAt retrieves the current pending nonce associated with an account.
 	PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)

+	// SuggestGasPrice retrieves the currently suggested gas price to allow a timely
+	// execution of a transaction.
+	SuggestGasPrice(ctx context.Context) (*big.Int, error)
+
+	// SuggestGasTipCap retrieves the currently suggested 1559 priority fee to allow
+	// a timely execution of a transaction.
+	SuggestGasTipCap(ctx context.Context) (*big.Int, error)
+
+	// EstimateGas tries to estimate the gas needed to execute a specific
+	// transaction based on the current pending state of the backend blockchain.
+	// There is no guarantee that this is the true gas limit requirement as other
+	// transactions may be added or removed by miners, but it should provide a basis
+	// for setting a reasonable default.
+	EstimateGas(ctx context.Context, call ethereum.CallMsg) (gas uint64, err error)
+
+	// SendTransaction injects the transaction into the pending pool for execution.
+	SendTransaction(ctx context.Context, tx *types.Transaction) error
+
 	// SendTransactionConditional injects the conditional transaction into the pending pool for execution after verification.
 	SendTransactionConditional(ctx context.Context, tx *types.Transaction, opts ethapi.TransactionOpts) error
 }

+// ContractFilterer defines the methods needed to access log events using one-off
+// queries or continuous event subscriptions.
+type ContractFilterer interface {
+	// FilterLogs executes a log filter operation, blocking during execution and
+	// returning all the results in one batch.
+	//
+	// TODO(karalabe): Deprecate when the subscription one can return past data too.
+	FilterLogs(ctx context.Context, query ethereum.FilterQuery) ([]types.Log, error)
+
+	// SubscribeFilterLogs creates a background log filtering operation, returning
+	// a subscription immediately, which can be used to stream the found events.
+	SubscribeFilterLogs(ctx context.Context, query ethereum.FilterQuery, ch chan<- types.Log) (ethereum.Subscription, error)
+}
+
 // DeployBackend wraps the operations needed by WaitMined and WaitDeployed.
 type DeployBackend interface {
 	TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)
 	CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error)
 }

-// ContractFilterer defines the methods needed to access log events using one-off
-// queries or continuous event subscriptions.
-type ContractFilterer interface {
-	ethereum.LogFilterer
-}
-
 // ContractBackend defines the methods needed to work with contracts on a read-write basis.
 type ContractBackend interface {
 	ContractCaller
--- a/accounts/abi/bind/backends/simulated.go
+++ b/accounts/abi/bind/backends/simulated.go
@ -18,35 +18,942 @@ package backends

 import (
 	"context"
+	"errors"
+	"fmt"
+	"math/big"
+	"sync"
+	"time"

+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/consensus/ethash"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/bloombits"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/ethclient/simulated"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/eth/filters"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/params"
+	"github.com/ethereum/go-ethereum/rpc"
 )

-// SimulatedBackend is a simulated blockchain.
-// Deprecated: use package github.com/ethereum/go-ethereum/ethclient/simulated instead.
+// This nil assignment ensures at compile time that SimulatedBackend implements bind.ContractBackend.
+var _ bind.ContractBackend = (*SimulatedBackend)(nil)
+
+var (
+	errBlockNumberUnsupported  = errors.New("simulatedBackend cannot access blocks other than the latest block")
+	errBlockDoesNotExist       = errors.New("block does not exist in blockchain")
+	errTransactionDoesNotExist = errors.New("transaction does not exist")
+)
+
+// SimulatedBackend implements bind.ContractBackend, simulating a blockchain in
+// the background. Its main purpose is to allow for easy testing of contract bindings.
+// Simulated backend implements the following interfaces:
+// ChainReader, ChainStateReader, ContractBackend, ContractCaller, ContractFilterer, ContractTransactor,
+// DeployBackend, GasEstimator, GasPricer, LogFilterer, PendingContractCaller, TransactionReader, and TransactionSender
 type SimulatedBackend struct {
-	*simulated.Backend
-	simulated.Client
+	database   ethdb.Database   // In memory database to store our testing data
+	blockchain *core.BlockChain // Ethereum blockchain to handle the consensus
+
+	mu              sync.Mutex
+	pendingBlock    *types.Block   // Currently pending block that will be imported on request
+	pendingState    *state.StateDB // Currently pending state that will be the active on request
+	pendingReceipts types.Receipts // Currently receipts for the pending block
+
+	events       *filters.EventSystem  // for filtering log events live
+	filterSystem *filters.FilterSystem // for filtering database logs
+
+	config *params.ChainConfig
 }

-// Fork sets the head to a new block, which is based on the provided parentHash.
-func (b *SimulatedBackend) Fork(ctx context.Context, parentHash common.Hash) error {
-	return b.Backend.Fork(parentHash)
+// NewSimulatedBackendWithDatabase creates a new binding backend based on the given database
+// and uses a simulated blockchain for testing purposes.
+// A simulated backend always uses chainID 1337.
+func NewSimulatedBackendWithDatabase(database ethdb.Database, alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend {
+	genesis := core.Genesis{
+		Config:   params.AllEthashProtocolChanges,
+		GasLimit: gasLimit,
+		Alloc:    alloc,
+	}
+	blockchain, _ := core.NewBlockChain(database, nil, &genesis, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
+
+	backend := &SimulatedBackend{
+		database:   database,
+		blockchain: blockchain,
+		config:     genesis.Config,
+	}
+
+	filterBackend := &filterBackend{database, blockchain, backend}
+	backend.filterSystem = filters.NewFilterSystem(filterBackend, filters.Config{})
+	backend.events = filters.NewEventSystem(backend.filterSystem)
+
+	header := backend.blockchain.CurrentBlock()
+	block := backend.blockchain.GetBlock(header.Hash(), header.Number.Uint64())
+
+	backend.rollback(block)
+	return backend
 }

 // NewSimulatedBackend creates a new binding backend using a simulated blockchain
 // for testing purposes.
-//
 // A simulated backend always uses chainID 1337.
+func NewSimulatedBackend(alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend {
+	return NewSimulatedBackendWithDatabase(rawdb.NewMemoryDatabase(), alloc, gasLimit)
+}
+
+// Close terminates the underlying blockchain's update loop.
+func (b *SimulatedBackend) Close() error {
+	b.blockchain.Stop()
+	return nil
+}
+
+// Commit imports all the pending transactions as a single block and starts a
+// fresh new state.
+func (b *SimulatedBackend) Commit() common.Hash {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if _, err := b.blockchain.InsertChain([]*types.Block{b.pendingBlock}); err != nil {
+		panic(err) // This cannot happen unless the simulator is wrong, fail in that case
+	}
+	blockHash := b.pendingBlock.Hash()
+
+	// Using the last inserted block here makes it possible to build on a side
+	// chain after a fork.
+	b.rollback(b.pendingBlock)
+
+	return blockHash
+}
+
+// Rollback aborts all pending transactions, reverting to the last committed state.
+func (b *SimulatedBackend) Rollback() {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	header := b.blockchain.CurrentBlock()
+	block := b.blockchain.GetBlock(header.Hash(), header.Number.Uint64())
+
+	b.rollback(block)
+}
+
+func (b *SimulatedBackend) rollback(parent *types.Block) {
+	blocks, _ := core.GenerateChain(b.config, parent, ethash.NewFaker(), b.database, 1, func(int, *core.BlockGen) {})
+
+	b.pendingBlock = blocks[0]
+	b.pendingState, _ = state.New(b.pendingBlock.Root(), b.blockchain.StateCache(), nil)
+}
+
+// Fork creates a side-chain that can be used to simulate reorgs.
 //
-// Deprecated: please use simulated.Backend from package
-// github.com/ethereum/go-ethereum/ethclient/simulated instead.
-func NewSimulatedBackend(alloc types.GenesisAlloc, gasLimit uint64) *SimulatedBackend {
-	b := simulated.NewBackend(alloc, simulated.WithBlockGasLimit(gasLimit))
-	return &SimulatedBackend{
-		Backend: b,
-		Client:  b.Client(),
+// This function should be called with the ancestor block where the new side
+// chain should be started. Transactions (old and new) can then be applied on
+// top and Commit-ed.
+//
+// Note, the side-chain will only become canonical (and trigger the events) when
+// it becomes longer. Until then CallContract will still operate on the current
+// canonical chain.
+//
+// There is a % chance that the side chain becomes canonical at the same length
+// to simulate live network behavior.
+func (b *SimulatedBackend) Fork(ctx context.Context, parent common.Hash) error {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if len(b.pendingBlock.Transactions()) != 0 {
+		return errors.New("pending block dirty")
+	}
+	block, err := b.blockByHash(ctx, parent)
+	if err != nil {
+		return err
+	}
+	b.rollback(block)
+	return nil
+}
+
+// stateByBlockNumber retrieves a state by a given blocknumber.
+func (b *SimulatedBackend) stateByBlockNumber(ctx context.Context, blockNumber *big.Int) (*state.StateDB, error) {
+	if blockNumber == nil || blockNumber.Cmp(b.blockchain.CurrentBlock().Number) == 0 {
+		return b.blockchain.State()
+	}
+	block, err := b.blockByNumber(ctx, blockNumber)
+	if err != nil {
+		return nil, err
+	}
+	return b.blockchain.StateAt(block.Root())
+}
+
+// CodeAt returns the code associated with a certain account in the blockchain.
+func (b *SimulatedBackend) CodeAt(ctx context.Context, contract common.Address, blockNumber *big.Int) ([]byte, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	stateDB, err := b.stateByBlockNumber(ctx, blockNumber)
+	if err != nil {
+		return nil, err
+	}
+
+	return stateDB.GetCode(contract), nil
+}
+
+// BalanceAt returns the wei balance of a certain account in the blockchain.
+func (b *SimulatedBackend) BalanceAt(ctx context.Context, contract common.Address, blockNumber *big.Int) (*big.Int, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	stateDB, err := b.stateByBlockNumber(ctx, blockNumber)
+	if err != nil {
+		return nil, err
+	}
+
+	return stateDB.GetBalance(contract), nil
+}
+
+// NonceAt returns the nonce of a certain account in the blockchain.
+func (b *SimulatedBackend) NonceAt(ctx context.Context, contract common.Address, blockNumber *big.Int) (uint64, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	stateDB, err := b.stateByBlockNumber(ctx, blockNumber)
+	if err != nil {
+		return 0, err
+	}
+
+	return stateDB.GetNonce(contract), nil
+}
+
+// StorageAt returns the value of key in the storage of an account in the blockchain.
+func (b *SimulatedBackend) StorageAt(ctx context.Context, contract common.Address, key common.Hash, blockNumber *big.Int) ([]byte, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	stateDB, err := b.stateByBlockNumber(ctx, blockNumber)
+	if err != nil {
+		return nil, err
+	}
+
+	val := stateDB.GetState(contract, key)
+	return val[:], nil
+}
+
+// TransactionReceipt returns the receipt of a transaction.
+func (b *SimulatedBackend) TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	receipt, _, _, _ := rawdb.ReadReceipt(b.database, txHash, b.config)
+	if receipt == nil {
+		return nil, ethereum.NotFound
+	}
+	return receipt, nil
+}
+
+// TransactionByHash checks the pool of pending transactions in addition to the
+// blockchain. The isPending return value indicates whether the transaction has been
+// mined yet. Note that the transaction may not be part of the canonical chain even if
+// it's not pending.
+func (b *SimulatedBackend) TransactionByHash(ctx context.Context, txHash common.Hash) (*types.Transaction, bool, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	tx := b.pendingBlock.Transaction(txHash)
+	if tx != nil {
+		return tx, true, nil
+	}
+	tx, _, _, _ = rawdb.ReadTransaction(b.database, txHash)
+	if tx != nil {
+		return tx, false, nil
+	}
+	return nil, false, ethereum.NotFound
+}
+
+// BlockByHash retrieves a block based on the block hash.
+func (b *SimulatedBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	return b.blockByHash(ctx, hash)
+}
+
+// blockByHash retrieves a block based on the block hash without Locking.
+func (b *SimulatedBackend) blockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
+	if hash == b.pendingBlock.Hash() {
+		return b.pendingBlock, nil
+	}
+
+	block := b.blockchain.GetBlockByHash(hash)
+	if block != nil {
+		return block, nil
+	}
+
+	return nil, errBlockDoesNotExist
+}
+
+// BlockByNumber retrieves a block from the database by number, caching it
+// (associated with its hash) if found.
+func (b *SimulatedBackend) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	return b.blockByNumber(ctx, number)
+}
+
+// blockByNumber retrieves a block from the database by number, caching it
+// (associated with its hash) if found without Lock.
+func (b *SimulatedBackend) blockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) {
+	if number == nil || number.Cmp(b.pendingBlock.Number()) == 0 {
+		return b.blockByHash(ctx, b.blockchain.CurrentBlock().Hash())
+	}
+
+	block := b.blockchain.GetBlockByNumber(uint64(number.Int64()))
+	if block == nil {
+		return nil, errBlockDoesNotExist
+	}
+
+	return block, nil
+}
+
+// HeaderByHash returns a block header from the current canonical chain.
+func (b *SimulatedBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if hash == b.pendingBlock.Hash() {
+		return b.pendingBlock.Header(), nil
+	}
+
+	header := b.blockchain.GetHeaderByHash(hash)
+	if header == nil {
+		return nil, errBlockDoesNotExist
+	}
+
+	return header, nil
+}
+
+// HeaderByNumber returns a block header from the current canonical chain. If number is
+// nil, the latest known header is returned.
+func (b *SimulatedBackend) HeaderByNumber(ctx context.Context, block *big.Int) (*types.Header, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if block == nil || block.Cmp(b.pendingBlock.Number()) == 0 {
+		return b.blockchain.CurrentHeader(), nil
+	}
+
+	return b.blockchain.GetHeaderByNumber(uint64(block.Int64())), nil
+}
+
+// TransactionCount returns the number of transactions in a given block.
+func (b *SimulatedBackend) TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if blockHash == b.pendingBlock.Hash() {
+		return uint(b.pendingBlock.Transactions().Len()), nil
+	}
+
+	block := b.blockchain.GetBlockByHash(blockHash)
+	if block == nil {
+		return uint(0), errBlockDoesNotExist
+	}
+
+	return uint(block.Transactions().Len()), nil
+}
+
+// TransactionInBlock returns the transaction for a specific block at a specific index.
+func (b *SimulatedBackend) TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if blockHash == b.pendingBlock.Hash() {
+		transactions := b.pendingBlock.Transactions()
+		if uint(len(transactions)) < index+1 {
+			return nil, errTransactionDoesNotExist
+		}
+
+		return transactions[index], nil
+	}
+
+	block := b.blockchain.GetBlockByHash(blockHash)
+	if block == nil {
+		return nil, errBlockDoesNotExist
+	}
+
+	transactions := block.Transactions()
+	if uint(len(transactions)) < index+1 {
+		return nil, errTransactionDoesNotExist
+	}
+
+	return transactions[index], nil
+}
+
+// PendingCodeAt returns the code associated with an account in the pending state.
+func (b *SimulatedBackend) PendingCodeAt(ctx context.Context, contract common.Address) ([]byte, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	return b.pendingState.GetCode(contract), nil
+}
+
+func newRevertError(result *core.ExecutionResult) *revertError {
+	reason, errUnpack := abi.UnpackRevert(result.Revert())
+	err := errors.New("execution reverted")
+	if errUnpack == nil {
+		err = fmt.Errorf("execution reverted: %v", reason)
+	}
+	return &revertError{
+		error:  err,
+		reason: hexutil.Encode(result.Revert()),
 	}
 }
+
+// revertError is an API error that encompasses an EVM revert with JSON error
+// code and a binary data blob.
+type revertError struct {
+	error
+	reason string // revert reason hex encoded
+}
+
+// ErrorCode returns the JSON error code for a revert.
+// See: https://github.com/ethereum/wiki/wiki/JSON-RPC-Error-Codes-Improvement-Proposal
+func (e *revertError) ErrorCode() int {
+	return 3
+}
+
+// ErrorData returns the hex encoded revert reason.
+func (e *revertError) ErrorData() interface{} {
+	return e.reason
+}
+
+// CallContract executes a contract call.
+func (b *SimulatedBackend) CallContract(ctx context.Context, call ethereum.CallMsg, blockNumber *big.Int) ([]byte, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if blockNumber != nil && blockNumber.Cmp(b.blockchain.CurrentBlock().Number) != 0 {
+		return nil, errBlockNumberUnsupported
+	}
+	stateDB, err := b.blockchain.State()
+	if err != nil {
+		return nil, err
+	}
+	res, err := b.callContract(ctx, call, b.blockchain.CurrentBlock(), stateDB)
+	if err != nil {
+		return nil, err
+	}
+	// If the result contains a revert reason, try to unpack and return it.
+	if len(res.Revert()) > 0 {
+		return nil, newRevertError(res)
+	}
+	return res.Return(), res.Err
+}
+
+// PendingCallContract executes a contract call on the pending state.
+func (b *SimulatedBackend) PendingCallContract(ctx context.Context, call ethereum.CallMsg) ([]byte, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	defer b.pendingState.RevertToSnapshot(b.pendingState.Snapshot())
+
+	res, err := b.callContract(ctx, call, b.pendingBlock.Header(), b.pendingState)
+	if err != nil {
+		return nil, err
+	}
+	// If the result contains a revert reason, try to unpack and return it.
+	if len(res.Revert()) > 0 {
+		return nil, newRevertError(res)
+	}
+	return res.Return(), res.Err
+}
+
+// PendingNonceAt implements PendingStateReader.PendingNonceAt, retrieving
+// the nonce currently pending for the account.
+func (b *SimulatedBackend) PendingNonceAt(ctx context.Context, account common.Address) (uint64, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	return b.pendingState.GetOrNewStateObject(account).Nonce(), nil
+}
+
+// SuggestGasPrice implements ContractTransactor.SuggestGasPrice. Since the simulated
+// chain doesn't have miners, we just return a gas price of 1 for any call.
+func (b *SimulatedBackend) SuggestGasPrice(ctx context.Context) (*big.Int, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if b.pendingBlock.Header().BaseFee != nil {
+		return b.pendingBlock.Header().BaseFee, nil
+	}
+	return big.NewInt(1), nil
+}
+
+// SuggestGasTipCap implements ContractTransactor.SuggestGasTipCap. Since the simulated
+// chain doesn't have miners, we just return a gas tip of 1 for any call.
+func (b *SimulatedBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
+	return big.NewInt(1), nil
+}
+
+// EstimateGas executes the requested code against the currently pending block/state and
+// returns the used amount of gas.
+func (b *SimulatedBackend) EstimateGas(ctx context.Context, call ethereum.CallMsg) (uint64, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	// Determine the lowest and highest possible gas limits to binary search in between
+	var (
+		lo  uint64 = params.TxGas - 1
+		hi  uint64
+		cap uint64
+	)
+	if call.Gas >= params.TxGas {
+		hi = call.Gas
+	} else {
+		hi = b.pendingBlock.GasLimit()
+	}
+	// Normalize the max fee per gas the call is willing to spend.
+	var feeCap *big.Int
+	if call.GasPrice != nil && (call.GasFeeCap != nil || call.GasTipCap != nil) {
+		return 0, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified")
+	} else if call.GasPrice != nil {
+		feeCap = call.GasPrice
+	} else if call.GasFeeCap != nil {
+		feeCap = call.GasFeeCap
+	} else {
+		feeCap = common.Big0
+	}
+	// Recap the highest gas allowance with account's balance.
+	if feeCap.BitLen() != 0 {
+		balance := b.pendingState.GetBalance(call.From) // from can't be nil
+		available := new(big.Int).Set(balance)
+		if call.Value != nil {
+			if call.Value.Cmp(available) >= 0 {
+				return 0, core.ErrInsufficientFundsForTransfer
+			}
+			available.Sub(available, call.Value)
+		}
+		allowance := new(big.Int).Div(available, feeCap)
+		if allowance.IsUint64() && hi > allowance.Uint64() {
+			transfer := call.Value
+			if transfer == nil {
+				transfer = new(big.Int)
+			}
+			log.Warn("Gas estimation capped by limited funds", "original", hi, "balance", balance,
+				"sent", transfer, "feecap", feeCap, "fundable", allowance)
+			hi = allowance.Uint64()
+		}
+	}
+	cap = hi
+
+	// Create a helper to check if a gas allowance results in an executable transaction
+	executable := func(gas uint64) (bool, *core.ExecutionResult, error) {
+		call.Gas = gas
+
+		snapshot := b.pendingState.Snapshot()
+		res, err := b.callContract(ctx, call, b.pendingBlock.Header(), b.pendingState)
+		b.pendingState.RevertToSnapshot(snapshot)
+
+		if err != nil {
+			if errors.Is(err, core.ErrIntrinsicGas) {
+				return true, nil, nil // Special case, raise gas limit
+			}
+			return true, nil, err // Bail out
+		}
+		return res.Failed(), res, nil
+	}
+	// Execute the binary search and hone in on an executable gas limit
+	for lo+1 < hi {
+		mid := (hi + lo) / 2
+		failed, _, err := executable(mid)
+
+		// If the error is not nil(consensus error), it means the provided message
+		// call or transaction will never be accepted no matter how much gas it is
+		// assigned. Return the error directly, don't struggle any more
+		if err != nil {
+			return 0, err
+		}
+		if failed {
+			lo = mid
+		} else {
+			hi = mid
+		}
+	}
+	// Reject the transaction as invalid if it still fails at the highest allowance
+	if hi == cap {
+		failed, result, err := executable(hi)
+		if err != nil {
+			return 0, err
+		}
+		if failed {
+			if result != nil && result.Err != vm.ErrOutOfGas {
+				if len(result.Revert()) > 0 {
+					return 0, newRevertError(result)
+				}
+				return 0, result.Err
+			}
+			// Otherwise, the specified gas cap is too low
+			return 0, fmt.Errorf("gas required exceeds allowance (%d)", cap)
+		}
+	}
+	return hi, nil
+}
+
+// callContract implements common code between normal and pending contract calls.
+// state is modified during execution, make sure to copy it if necessary.
+func (b *SimulatedBackend) callContract(ctx context.Context, call ethereum.CallMsg, header *types.Header, stateDB *state.StateDB) (*core.ExecutionResult, error) {
+	// Gas prices post 1559 need to be initialized
+	if call.GasPrice != nil && (call.GasFeeCap != nil || call.GasTipCap != nil) {
+		return nil, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified")
+	}
+	head := b.blockchain.CurrentHeader()
+	if !b.blockchain.Config().IsLondon(head.Number) {
+		// If there's no basefee, then it must be a non-1559 execution
+		if call.GasPrice == nil {
+			call.GasPrice = new(big.Int)
+		}
+		call.GasFeeCap, call.GasTipCap = call.GasPrice, call.GasPrice
+	} else {
+		// A basefee is provided, necessitating 1559-type execution
+		if call.GasPrice != nil {
+			// User specified the legacy gas field, convert to 1559 gas typing
+			call.GasFeeCap, call.GasTipCap = call.GasPrice, call.GasPrice
+		} else {
+			// User specified 1559 gas fields (or none), use those
+			if call.GasFeeCap == nil {
+				call.GasFeeCap = new(big.Int)
+			}
+			if call.GasTipCap == nil {
+				call.GasTipCap = new(big.Int)
+			}
+			// Backfill the legacy gasPrice for EVM execution, unless we're all zeroes
+			call.GasPrice = new(big.Int)
+			if call.GasFeeCap.BitLen() > 0 || call.GasTipCap.BitLen() > 0 {
+				call.GasPrice = math.BigMin(new(big.Int).Add(call.GasTipCap, head.BaseFee), call.GasFeeCap)
+			}
+		}
+	}
+	// Ensure message is initialized properly.
+	if call.Gas == 0 {
+		call.Gas = 50000000
+	}
+	if call.Value == nil {
+		call.Value = new(big.Int)
+	}
+
+	// Set infinite balance to the fake caller account.
+	from := stateDB.GetOrNewStateObject(call.From)
+	from.SetBalance(math.MaxBig256)
+
+	// Execute the call.
+	msg := &core.Message{
+		From:              call.From,
+		To:                call.To,
+		Value:             call.Value,
+		GasLimit:          call.Gas,
+		GasPrice:          call.GasPrice,
+		GasFeeCap:         call.GasFeeCap,
+		GasTipCap:         call.GasTipCap,
+		Data:              call.Data,
+		AccessList:        call.AccessList,
+		SkipAccountChecks: true,
+	}
+
+	// Create a new environment which holds all relevant information
+	// about the transaction and calling mechanisms.
+	txContext := core.NewEVMTxContext(msg)
+	evmContext := core.NewEVMBlockContext(header, b.blockchain, nil)
+	vmEnv := vm.NewEVM(evmContext, txContext, stateDB, b.config, vm.Config{NoBaseFee: true})
+	gasPool := new(core.GasPool).AddGas(math.MaxUint64)
+
+	return core.ApplyMessage(vmEnv, msg, gasPool)
+}
+
+// SendTransaction updates the pending block to include the given transaction.
+func (b *SimulatedBackend) SendTransaction(ctx context.Context, tx *types.Transaction) error {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	// Get the last block
+	block, err := b.blockByHash(ctx, b.pendingBlock.ParentHash())
+	if err != nil {
+		return errors.New("could not fetch parent")
+	}
+	// Check transaction validity
+	signer := types.MakeSigner(b.blockchain.Config(), block.Number(), block.Time())
+	sender, err := types.Sender(signer, tx)
+	if err != nil {
+		return fmt.Errorf("invalid transaction: %v", err)
+	}
+	nonce := b.pendingState.GetNonce(sender)
+	if tx.Nonce() != nonce {
+		return fmt.Errorf("invalid transaction nonce: got %d, want %d", tx.Nonce(), nonce)
+	}
+	// Include tx in chain
+	blocks, receipts := core.GenerateChain(b.config, block, ethash.NewFaker(), b.database, 1, func(number int, block *core.BlockGen) {
+		for _, tx := range b.pendingBlock.Transactions() {
+			block.AddTxWithChain(b.blockchain, tx)
+		}
+		block.AddTxWithChain(b.blockchain, tx)
+	})
+	stateDB, _ := b.blockchain.State()
+
+	b.pendingBlock = blocks[0]
+	b.pendingState, _ = state.New(b.pendingBlock.Root(), stateDB.Database(), nil)
+	b.pendingReceipts = receipts[0]
+	return nil
+}
+
+// SendTransaction updates the pending block to include the given transaction.
+func (b *SimulatedBackend) SendTransactionConditional(ctx context.Context, tx *types.Transaction, opts ethapi.TransactionOpts) error {
+	state, err := b.blockchain.State()
+	if err != nil {
+		return err
+	}
+	if err := opts.Check(b.pendingBlock.NumberU64(), b.pendingBlock.Time(), state); err != nil {
+		return err
+	}
+	return b.SendTransaction(ctx, tx)
+}
+
+// FilterLogs executes a log filter operation, blocking during execution and
+// returning all the results in one batch.
+//
+// TODO(karalabe): Deprecate when the subscription one can return past data too.
+func (b *SimulatedBackend) FilterLogs(ctx context.Context, query ethereum.FilterQuery) ([]types.Log, error) {
+	var filter *filters.Filter
+	if query.BlockHash != nil {
+		// Block filter requested, construct a single-shot filter
+		filter = b.filterSystem.NewBlockFilter(*query.BlockHash, query.Addresses, query.Topics)
+	} else {
+		// Initialize unset filter boundaries to run from genesis to chain head
+		from := int64(0)
+		if query.FromBlock != nil {
+			from = query.FromBlock.Int64()
+		}
+		to := int64(-1)
+		if query.ToBlock != nil {
+			to = query.ToBlock.Int64()
+		}
+		// Construct the range filter
+		filter = b.filterSystem.NewRangeFilter(from, to, query.Addresses, query.Topics, false)
+	}
+	// Run the filter and return all the logs
+	logs, err := filter.Logs(ctx)
+	if err != nil {
+		return nil, err
+	}
+	res := make([]types.Log, len(logs))
+	for i, nLog := range logs {
+		res[i] = *nLog
+	}
+	return res, nil
+}
+
+// SubscribeFilterLogs creates a background log filtering operation, returning a
+// subscription immediately, which can be used to stream the found events.
+func (b *SimulatedBackend) SubscribeFilterLogs(ctx context.Context, query ethereum.FilterQuery, ch chan<- types.Log) (ethereum.Subscription, error) {
+	// Subscribe to contract events
+	sink := make(chan []*types.Log)
+
+	sub, err := b.events.SubscribeLogs(query, sink)
+	if err != nil {
+		return nil, err
+	}
+	// Since we're getting logs in batches, we need to flatten them into a plain stream
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case logs := <-sink:
+				for _, nlog := range logs {
+					select {
+					case ch <- *nlog:
+					case err := <-sub.Err():
+						return err
+					case <-quit:
+						return nil
+					}
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// SubscribeNewHead returns an event subscription for a new header.
+func (b *SimulatedBackend) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (ethereum.Subscription, error) {
+	// subscribe to a new head
+	sink := make(chan *types.Header)
+	sub := b.events.SubscribeNewHeads(sink)
+
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case head := <-sink:
+				select {
+				case ch <- head:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// AdjustTime adds a time shift to the simulated clock.
+// It can only be called on empty blocks.
+func (b *SimulatedBackend) AdjustTime(adjustment time.Duration) error {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if len(b.pendingBlock.Transactions()) != 0 {
+		return errors.New("Could not adjust time on non-empty block")
+	}
+	// Get the last block
+	block := b.blockchain.GetBlockByHash(b.pendingBlock.ParentHash())
+	if block == nil {
+		return errors.New("could not find parent")
+	}
+
+	blocks, _ := core.GenerateChain(b.config, block, ethash.NewFaker(), b.database, 1, func(number int, block *core.BlockGen) {
+		block.OffsetTime(int64(adjustment.Seconds()))
+	})
+	stateDB, _ := b.blockchain.State()
+
+	b.pendingBlock = blocks[0]
+	b.pendingState, _ = state.New(b.pendingBlock.Root(), stateDB.Database(), nil)
+
+	return nil
+}
+
+// Blockchain returns the underlying blockchain.
+func (b *SimulatedBackend) Blockchain() *core.BlockChain {
+	return b.blockchain
+}
+
+// filterBackend implements filters.Backend to support filtering for logs without
+// taking bloom-bits acceleration structures into account.
+type filterBackend struct {
+	db      ethdb.Database
+	bc      *core.BlockChain
+	backend *SimulatedBackend
+}
+
+func (fb *filterBackend) ChainDb() ethdb.Database { return fb.db }
+
+func (fb *filterBackend) EventMux() *event.TypeMux { panic("not supported") }
+
+func (fb *filterBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
+	switch number {
+	case rpc.PendingBlockNumber:
+		if block := fb.backend.pendingBlock; block != nil {
+			return block.Header(), nil
+		}
+		return nil, nil
+	case rpc.LatestBlockNumber:
+		return fb.bc.CurrentHeader(), nil
+	case rpc.FinalizedBlockNumber:
+		return fb.bc.CurrentFinalBlock(), nil
+	case rpc.SafeBlockNumber:
+		return fb.bc.CurrentSafeBlock(), nil
+	default:
+		return fb.bc.GetHeaderByNumber(uint64(number.Int64())), nil
+	}
+}
+
+func (fb *filterBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
+	return fb.bc.GetHeaderByHash(hash), nil
+}
+
+func (fb *filterBackend) GetBody(ctx context.Context, hash common.Hash, number rpc.BlockNumber) (*types.Body, error) {
+	if body := fb.bc.GetBody(hash); body != nil {
+		return body, nil
+	}
+	return nil, errors.New("block body not found")
+}
+
+func (fb *filterBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts) {
+	return fb.backend.pendingBlock, fb.backend.pendingReceipts
+}
+
+func (fb *filterBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
+	number := rawdb.ReadHeaderNumber(fb.db, hash)
+	if number == nil {
+		return nil, nil
+	}
+	header := rawdb.ReadHeader(fb.db, hash, *number)
+	if header == nil {
+		return nil, nil
+	}
+	return rawdb.ReadReceipts(fb.db, hash, *number, header.Time, fb.bc.Config()), nil
+}
+
+func (fb *filterBackend) GetLogs(ctx context.Context, hash common.Hash, number uint64) ([][]*types.Log, error) {
+	logs := rawdb.ReadLogs(fb.db, hash, number, fb.bc.Config())
+	return logs, nil
+}
+
+func (fb *filterBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription {
+	return nullSubscription()
+}
+
+func (fb *filterBackend) SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription {
+	return nullSubscription()
+}
+
+func (fb *filterBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
+	return fb.bc.SubscribeChainEvent(ch)
+}
+
+func (fb *filterBackend) SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription {
+	return fb.bc.SubscribeFinalizedHeaderEvent(ch)
+}
+
+func (fb *filterBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
+	return fb.bc.SubscribeRemovedLogsEvent(ch)
+}
+
+func (fb *filterBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
+	return fb.bc.SubscribeLogsEvent(ch)
+}
+
+func (fb *filterBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription {
+	return nullSubscription()
+}
+
+func (fb *filterBackend) BloomStatus() (uint64, uint64) { return 4096, 0 }
+
+func (fb *filterBackend) ServiceFilter(ctx context.Context, ms *bloombits.MatcherSession) {
+	panic("not supported")
+}
+
+func (fb *filterBackend) ChainConfig() *params.ChainConfig {
+	panic("not supported")
+}
+
+func (fb *filterBackend) CurrentHeader() *types.Header {
+	panic("not supported")
+}
+
+func nullSubscription() event.Subscription {
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		<-quit
+		return nil
+	})
+}
--- a/accounts/abi/bind/backends/simulated_test.go
+++ b/accounts/abi/bind/backends/simulated_test.go
--- a/accounts/abi/bind/base.go
+++ b/accounts/abi/bind/base.go
@ -48,7 +48,6 @@ type CallOpts struct {
 	Pending     bool            // Whether to operate on the pending state or the last known one
 	From        common.Address  // Optional the sender address, otherwise the first account is used
 	BlockNumber *big.Int        // Optional the block number on which the call should be performed
-	BlockHash   common.Hash     // Optional the block hash on which the call should be performed
 	Context     context.Context // Network context to support cancellation and timeouts (nil = no timeout)
 }

@ -190,23 +189,6 @@ func (c *BoundContract) Call(opts *CallOpts, results *[]interface{}, method stri
 				return ErrNoCode
 			}
 		}
-	} else if opts.BlockHash != (common.Hash{}) {
-		bh, ok := c.caller.(BlockHashContractCaller)
-		if !ok {
-			return ErrNoBlockHashState
-		}
-		output, err = bh.CallContractAtHash(ctx, msg, opts.BlockHash)
-		if err != nil {
-			return err
-		}
-		if len(output) == 0 {
-			// Make sure we have a contract to operate on, and bail out otherwise.
-			if code, err = bh.CodeAtHash(ctx, c.address, opts.BlockHash); err != nil {
-				return err
-			} else if len(code) == 0 {
-				return ErrNoCode
-			}
-		}
 	} else {
 		output, err = c.caller.CallContract(ctx, msg, opts.BlockNumber)
 		if err != nil {
@ -238,7 +220,7 @@ func (c *BoundContract) Transact(opts *TransactOpts, method string, params ...in
 	if err != nil {
 		return nil, err
 	}
-	// todo(rjl493456442) check whether the method is payable or not,
+	// todo(rjl493456442) check the method is payable or not,
 	// reject invalid transaction at the first place
 	return c.transact(opts, &c.address, input)
 }
@ -246,7 +228,7 @@ func (c *BoundContract) Transact(opts *TransactOpts, method string, params ...in
 // RawTransact initiates a transaction with the given raw calldata as the input.
 // It's usually used to initiate transactions for invoking **Fallback** function.
 func (c *BoundContract) RawTransact(opts *TransactOpts, calldata []byte) (*types.Transaction, error) {
-	// todo(rjl493456442) check whether the method is payable or not,
+	// todo(rjl493456442) check the method is payable or not,
 	// reject invalid transaction at the first place
 	return c.transact(opts, &c.address, calldata)
 }
--- a/accounts/abi/bind/base_test.go
+++ b/accounts/abi/bind/base_test.go
@ -119,28 +119,7 @@ func (mc *mockPendingCaller) PendingCallContract(ctx context.Context, call ether
 	return mc.pendingCallContractBytes, mc.pendingCallContractErr
 }

-type mockBlockHashCaller struct {
-	*mockCaller
-	codeAtHashBytes          []byte
-	codeAtHashErr            error
-	codeAtHashCalled         bool
-	callContractAtHashCalled bool
-	callContractAtHashBytes  []byte
-	callContractAtHashErr    error
-}
-
-func (mc *mockBlockHashCaller) CodeAtHash(ctx context.Context, contract common.Address, hash common.Hash) ([]byte, error) {
-	mc.codeAtHashCalled = true
-	return mc.codeAtHashBytes, mc.codeAtHashErr
-}
-
-func (mc *mockBlockHashCaller) CallContractAtHash(ctx context.Context, call ethereum.CallMsg, hash common.Hash) ([]byte, error) {
-	mc.callContractAtHashCalled = true
-	return mc.callContractAtHashBytes, mc.callContractAtHashErr
-}
-
 func TestPassingBlockNumber(t *testing.T) {
-	t.Parallel()
 	mc := &mockPendingCaller{
 		mockCaller: &mockCaller{
 			codeAtBytes: []byte{1, 2, 3},
@ -192,7 +171,6 @@ func TestPassingBlockNumber(t *testing.T) {
 const hexData = "0x000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158"

 func TestUnpackIndexedStringTyLogIntoMap(t *testing.T) {
-	t.Parallel()
 	hash := crypto.Keccak256Hash([]byte("testName"))
 	topics := []common.Hash{
 		crypto.Keccak256Hash([]byte("received(string,address,uint256,bytes)")),
@ -214,7 +192,6 @@ func TestUnpackIndexedStringTyLogIntoMap(t *testing.T) {
 }

 func TestUnpackAnonymousLogIntoMap(t *testing.T) {
-	t.Parallel()
 	mockLog := newMockLog(nil, common.HexToHash("0x0"))

 	abiString := `[{"anonymous":false,"inputs":[{"indexed":false,"name":"amount","type":"uint256"}],"name":"received","type":"event"}]`
@ -232,7 +209,6 @@ func TestUnpackAnonymousLogIntoMap(t *testing.T) {
 }

 func TestUnpackIndexedSliceTyLogIntoMap(t *testing.T) {
-	t.Parallel()
 	sliceBytes, err := rlp.EncodeToBytes([]string{"name1", "name2", "name3", "name4"})
 	if err != nil {
 		t.Fatal(err)
@ -258,7 +234,6 @@ func TestUnpackIndexedSliceTyLogIntoMap(t *testing.T) {
 }

 func TestUnpackIndexedArrayTyLogIntoMap(t *testing.T) {
-	t.Parallel()
 	arrBytes, err := rlp.EncodeToBytes([2]common.Address{common.HexToAddress("0x0"), common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2")})
 	if err != nil {
 		t.Fatal(err)
@ -284,7 +259,6 @@ func TestUnpackIndexedArrayTyLogIntoMap(t *testing.T) {
 }

 func TestUnpackIndexedFuncTyLogIntoMap(t *testing.T) {
-	t.Parallel()
 	mockAddress := common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2")
 	addrBytes := mockAddress.Bytes()
 	hash := crypto.Keccak256Hash([]byte("mockFunction(address,uint)"))
@ -311,7 +285,6 @@ func TestUnpackIndexedFuncTyLogIntoMap(t *testing.T) {
 }

 func TestUnpackIndexedBytesTyLogIntoMap(t *testing.T) {
-	t.Parallel()
 	bytes := []byte{1, 2, 3, 4, 5}
 	hash := crypto.Keccak256Hash(bytes)
 	topics := []common.Hash{
@ -334,7 +307,6 @@ func TestUnpackIndexedBytesTyLogIntoMap(t *testing.T) {
 }

 func TestTransactGasFee(t *testing.T) {
-	t.Parallel()
 	assert := assert.New(t)

 	// GasTipCap and GasFeeCap
@ -410,7 +382,6 @@ func newMockLog(topics []common.Hash, txHash common.Hash) types.Log {
 }

 func TestCall(t *testing.T) {
-	t.Parallel()
 	var method, methodWithArg = "something", "somethingArrrrg"
 	tests := []struct {
 		name, method string
@ -434,15 +405,6 @@ func TestCall(t *testing.T) {
 			Pending: true,
 		},
 		method: method,
-	}, {
-		name: "ok hash",
-		mc: &mockBlockHashCaller{
-			codeAtHashBytes: []byte{0},
-		},
-		opts: &bind.CallOpts{
-			BlockHash: common.Hash{0xaa},
-		},
-		method: method,
 	}, {
 		name:    "pack error, no method",
 		mc:      new(mockCaller),
@ -456,14 +418,6 @@ func TestCall(t *testing.T) {
 		},
 		method:       method,
 		wantErrExact: bind.ErrNoPendingState,
-	}, {
-		name: "interface error, blockHash but not a BlockHashContractCaller",
-		mc:   new(mockCaller),
-		opts: &bind.CallOpts{
-			BlockHash: common.Hash{0xaa},
-		},
-		method:       method,
-		wantErrExact: bind.ErrNoBlockHashState,
 	}, {
 		name: "pending call canceled",
 		mc: &mockPendingCaller{
@ -511,34 +465,6 @@ func TestCall(t *testing.T) {
 		mc:           new(mockCaller),
 		method:       method,
 		wantErrExact: bind.ErrNoCode,
-	}, {
-		name: "call contract at hash error",
-		mc: &mockBlockHashCaller{
-			callContractAtHashErr: context.DeadlineExceeded,
-		},
-		opts: &bind.CallOpts{
-			BlockHash: common.Hash{0xaa},
-		},
-		method:       method,
-		wantErrExact: context.DeadlineExceeded,
-	}, {
-		name: "code at error",
-		mc: &mockBlockHashCaller{
-			codeAtHashErr: errors.New(""),
-		},
-		opts: &bind.CallOpts{
-			BlockHash: common.Hash{0xaa},
-		},
-		method:  method,
-		wantErr: true,
-	}, {
-		name: "no code at hash",
-		mc:   new(mockBlockHashCaller),
-		opts: &bind.CallOpts{
-			BlockHash: common.Hash{0xaa},
-		},
-		method:       method,
-		wantErrExact: bind.ErrNoCode,
 	}, {
 		name: "unpack error missing arg",
 		mc: &mockCaller{
@ -586,7 +512,6 @@ func TestCall(t *testing.T) {

 // TestCrashers contains some strings which previously caused the abi codec to crash.
 func TestCrashers(t *testing.T) {
-	t.Parallel()
 	abi.JSON(strings.NewReader(`[{"inputs":[{"type":"tuple[]","components":[{"type":"bool","name":"_1"}]}]}]`))
 	abi.JSON(strings.NewReader(`[{"inputs":[{"type":"tuple[]","components":[{"type":"bool","name":"&"}]}]}]`))
 	abi.JSON(strings.NewReader(`[{"inputs":[{"type":"tuple[]","components":[{"type":"bool","name":"----"}]}]}]`))
--- a/accounts/abi/bind/bind.go
+++ b/accounts/abi/bind/bind.go
@ -79,7 +79,7 @@ func isKeyWord(arg string) bool {

 // Bind generates a Go wrapper around a contract ABI. This wrapper isn't meant
 // to be used as is in client code, but rather as an intermediate struct which
-// enforces compile time type safety and naming convention as opposed to having to
+// enforces compile time type safety and naming convention opposed to having to
 // manually maintain hard coded strings that break on runtime.
 func Bind(types []string, abis []string, bytecodes []string, fsigs []map[string]string, pkg string, lang Lang, libs map[string]string, aliases map[string]string) (string, error) {
 	var (
@ -363,7 +363,7 @@ func bindTopicTypeGo(kind abi.Type, structs map[string]*tmplStruct) string {
 	// parameters that are not value types i.e. arrays and structs are not
 	// stored directly but instead a keccak256-hash of an encoding is stored.
 	//
-	// We only convert strings and bytes to hash, still need to deal with
+	// We only convert stringS and bytes to hash, still need to deal with
 	// array(both fixed-size and dynamic-size) and struct.
 	if bound == "string" || bound == "[]byte" {
 		bound = "common.Hash"
--- a/accounts/abi/bind/bind_test.go
+++ b/accounts/abi/bind/bind_test.go
@ -289,7 +289,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -297,7 +297,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy an interaction tester contract and call a transaction on it
@ -305,7 +305,6 @@ var bindTests = []struct {
 			if err != nil {
 				t.Fatalf("Failed to deploy interactor contract: %v", err)
 			}
-			sim.Commit()
 			if _, err := interactor.Transact(auth, "Transact string"); err != nil {
 				t.Fatalf("Failed to transact with interactor contract: %v", err)
 			}
@ -345,7 +344,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -353,7 +352,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a tuple tester contract and execute a structured call on it
@ -391,7 +390,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -399,7 +398,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a tuple tester contract and execute a structured call on it
@ -449,7 +448,7 @@ var bindTests = []struct {
 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 			"github.com/ethereum/go-ethereum/common"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -457,7 +456,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a slice tester contract and execute a n array call on it
@ -497,7 +496,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -505,7 +504,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a default method invoker contract and execute its default method
@ -513,7 +512,6 @@ var bindTests = []struct {
 			if err != nil {
 				t.Fatalf("Failed to deploy defaulter contract: %v", err)
 			}
-			sim.Commit()
 			if _, err := (&DefaulterRaw{defaulter}).Transfer(auth); err != nil {
 				t.Fatalf("Failed to invoke default method: %v", err)
 			}
@ -564,7 +562,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -572,7 +570,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
 		
-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()
 		
 			// Deploy a structs method invoker contract and execute its default method
@ -610,12 +608,12 @@ var bindTests = []struct {
 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 			"github.com/ethereum/go-ethereum/common"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 		`,
 		`
 			// Create a simulator and wrap a non-deployed contract

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{}, uint64(10000000000))
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{}, uint64(10000000000))
 			defer sim.Close()

 			nonexistent, err := NewNonExistent(common.Address{}, sim)
@ -649,12 +647,12 @@ var bindTests = []struct {
 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 			"github.com/ethereum/go-ethereum/common"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 		`,
 		`
 			// Create a simulator and wrap a non-deployed contract

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{}, uint64(10000000000))
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{}, uint64(10000000000))
 			defer sim.Close()

 			nonexistent, err := NewNonExistentStruct(common.Address{}, sim)
@ -696,7 +694,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -704,7 +702,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a funky gas pattern contract
@ -746,7 +744,7 @@ var bindTests = []struct {
 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 			"github.com/ethereum/go-ethereum/common"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -754,7 +752,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a sender tester contract and execute a structured call on it
@ -821,7 +819,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -829,7 +827,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a underscorer tester contract and execute a structured call on it
@ -915,7 +913,7 @@ var bindTests = []struct {
 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 			"github.com/ethereum/go-ethereum/common"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -923,7 +921,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy an eventer contract
@ -1105,7 +1103,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -1113,7 +1111,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			//deploy the test contract
@ -1240,7 +1238,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,

@ -1248,7 +1246,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			_, _, contract, err := DeployTuple(auth, sim)
@ -1382,7 +1380,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -1390,7 +1388,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			//deploy the test contract
@ -1448,14 +1446,14 @@ var bindTests = []struct {

 		"github.com/ethereum/go-ethereum/accounts/abi/bind"
 		"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-		"github.com/ethereum/go-ethereum/core/types"
+		"github.com/ethereum/go-ethereum/core"
 		"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
 		// Initialize test accounts
 		key, _ := crypto.GenerateKey()
 		auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
-		sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+		sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 		defer sim.Close()

 		// deploy the test contract
@ -1537,7 +1535,7 @@ var bindTests = []struct {
 		"github.com/ethereum/go-ethereum/accounts/abi/bind"
 		"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 		"github.com/ethereum/go-ethereum/crypto"
-		"github.com/ethereum/go-ethereum/core/types"
+		"github.com/ethereum/go-ethereum/core"
 		`,
 		`
 		// Initialize test accounts
@ -1545,7 +1543,7 @@ var bindTests = []struct {
 		addr := crypto.PubkeyToAddress(key.PublicKey)

 		// Deploy registrar contract
-		sim := backends.NewSimulatedBackend(types.GenesisAlloc{addr: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+		sim := backends.NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 		defer sim.Close()

 		transactOpts, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
@ -1600,14 +1598,14 @@ var bindTests = []struct {
 		"github.com/ethereum/go-ethereum/accounts/abi/bind"
 		"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 		"github.com/ethereum/go-ethereum/crypto"
-		"github.com/ethereum/go-ethereum/core/types"
+		"github.com/ethereum/go-ethereum/core"
        `,
 		`
 		key, _ := crypto.GenerateKey()
 		addr := crypto.PubkeyToAddress(key.PublicKey)

 		// Deploy registrar contract
-		sim := backends.NewSimulatedBackend(types.GenesisAlloc{addr: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+		sim := backends.NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 		defer sim.Close()

 		transactOpts, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
@ -1661,7 +1659,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 		`,
 		`
@ -1669,7 +1667,7 @@ var bindTests = []struct {
 			key, _ := crypto.GenerateKey()
 			auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))

-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000000000)}}, 10000000)
 			defer sim.Close()

 			// Deploy a tester contract and execute a structured call on it
@ -1679,7 +1677,7 @@ var bindTests = []struct {
 			}
 			sim.Commit()

-			// This test the existence of the free retriever call for view and pure functions
+			// This test the existence of the free retreiver call for view and pure functions
 			if num, err := pav.PureFunc(nil); err != nil {
 				t.Fatalf("Failed to call anonymous field retriever: %v", err)
 			} else if num.Cmp(big.NewInt(42)) != 0 {
@ -1722,14 +1720,14 @@ var bindTests = []struct {
 	
 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 	   `,
 		`
 			key, _ := crypto.GenerateKey()
 			addr := crypto.PubkeyToAddress(key.PublicKey)
 	
-			sim := backends.NewSimulatedBackend(types.GenesisAlloc{addr: {Balance: big.NewInt(10000000000000000)}}, 1000000)
+			sim := backends.NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(10000000000000000)}}, 1000000)
 			defer sim.Close()
 	
 			opts, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
@ -1810,7 +1808,7 @@ var bindTests = []struct {

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 			"github.com/ethereum/go-ethereum/eth/ethconfig"
 	   `,
@ -1818,7 +1816,7 @@ var bindTests = []struct {
 			var (
 				key, _  = crypto.GenerateKey()
 				user, _ = bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
-				sim     = backends.NewSimulatedBackend(types.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
+				sim     = backends.NewSimulatedBackend(core.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
 			)
 			defer sim.Close()

@ -1876,12 +1874,11 @@ var bindTests = []struct {
 		[]string{"0x6080604052348015600f57600080fd5b5060998061001e6000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c8063726c638214602d575b600080fd5b60336035565b005b60405163024876cd60e61b815260016004820152600260248201526003604482015260640160405180910390fdfea264697066735822122093f786a1bc60216540cd999fbb4a6109e0fef20abcff6e9107fb2817ca968f3c64736f6c63430008070033"},
 		[]string{`[{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"MyError","type":"error"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"MyError1","type":"error"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"MyError2","type":"error"},{"inputs":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256","name":"b","type":"uint256"},{"internalType":"uint256","name":"c","type":"uint256"}],"name":"MyError3","type":"error"},{"inputs":[],"name":"Error","outputs":[],"stateMutability":"pure","type":"function"}]`},
 		`
-			"context"
 			"math/big"
 	
 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 			"github.com/ethereum/go-ethereum/eth/ethconfig"
 	   `,
@ -1889,7 +1886,7 @@ var bindTests = []struct {
 			var (
 				key, _  = crypto.GenerateKey()
 				user, _ = bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
-				sim     = backends.NewSimulatedBackend(types.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
+				sim     = backends.NewSimulatedBackend(core.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
 			)
 			defer sim.Close()
 	
@ -1898,7 +1895,7 @@ var bindTests = []struct {
 				t.Fatal(err)
 			}
 			sim.Commit()
-			_, err = bind.WaitDeployed(context.Background(), sim, tx)
+			_, err = bind.WaitDeployed(nil, sim, tx)
 			if err != nil {
 				t.Error(err)
 			}
@ -1929,12 +1926,11 @@ var bindTests = []struct {
 		bytecode: []string{`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`},
 		abi:      []string{`[{"inputs":[{"components":[{"internalType":"uint256","name":"field","type":"uint256"}],"internalType":"struct ConstructorWithStructParam.StructType","name":"st","type":"tuple"}],"stateMutability":"nonpayable","type":"constructor"}]`},
 		imports: `
-			"context"
 			"math/big"

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 			"github.com/ethereum/go-ethereum/eth/ethconfig"
 		`,
@ -1942,7 +1938,7 @@ var bindTests = []struct {
 			var (
 				key, _  = crypto.GenerateKey()
 				user, _ = bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
-				sim     = backends.NewSimulatedBackend(types.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
+				sim     = backends.NewSimulatedBackend(core.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
 			)
 			defer sim.Close()

@ -1952,7 +1948,7 @@ var bindTests = []struct {
 			}
 			sim.Commit()
 			
-			if _, err = bind.WaitDeployed(context.Background(), sim, tx); err != nil {
+			if _, err = bind.WaitDeployed(nil, sim, tx); err != nil {
 				t.Logf("Deployment tx: %+v", tx)
 				t.Errorf("bind.WaitDeployed(nil, %T, <deployment tx>) got err %v; want nil err", sim, err)
 			}
@ -1978,12 +1974,11 @@ var bindTests = []struct {
 		bytecode: []string{"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"},
 		abi:      []string{`[ { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "int256", "name": "msg", "type": "int256" }, { "indexed": false, "internalType": "int256", "name": "_msg", "type": "int256" } ], "name": "log", "type": "event" }, { "inputs": [ { "components": [ { "internalType": "bytes", "name": "data", "type": "bytes" }, { "internalType": "bytes", "name": "_data", "type": "bytes" } ], "internalType": "struct oracle.request", "name": "req", "type": "tuple" } ], "name": "addRequest", "outputs": [], "stateMutability": "pure", "type": "function" }, { "inputs": [], "name": "getRequest", "outputs": [ { "components": [ { "internalType": "bytes", "name": "data", "type": "bytes" }, { "internalType": "bytes", "name": "_data", "type": "bytes" } ], "internalType": "struct oracle.request", "name": "", "type": "tuple" } ], "stateMutability": "pure", "type": "function" } ]`},
 		imports: `
-			"context"
 			"math/big"

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 			"github.com/ethereum/go-ethereum/eth/ethconfig"
 		`,
@ -1991,7 +1986,7 @@ var bindTests = []struct {
 			var (
 				key, _  = crypto.GenerateKey()
 				user, _ = bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
-				sim     = backends.NewSimulatedBackend(types.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
+				sim     = backends.NewSimulatedBackend(core.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
 			)
 			defer sim.Close()

@ -2001,7 +1996,7 @@ var bindTests = []struct {
 			}
 			sim.Commit()
 			
-			if _, err = bind.WaitDeployed(context.Background(), sim, tx); err != nil {
+			if _, err = bind.WaitDeployed(nil, sim, tx); err != nil {
 				t.Logf("Deployment tx: %+v", tx)
 				t.Errorf("bind.WaitDeployed(nil, %T, <deployment tx>) got err %v; want nil err", sim, err)
 			}
@ -2019,12 +2014,11 @@ var bindTests = []struct {
 		bytecode: []string{"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"},
 		abi:      []string{`[{"inputs":[{"internalType":"uint256","name":"range","type":"uint256"}],"name":"functionWithKeywordParameter","outputs":[],"stateMutability":"pure","type":"function"}]`},
 		imports: `
-			"context"
 			"math/big"

 			"github.com/ethereum/go-ethereum/accounts/abi/bind"
 			"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
-			"github.com/ethereum/go-ethereum/core/types"
+			"github.com/ethereum/go-ethereum/core"
 			"github.com/ethereum/go-ethereum/crypto"
 			"github.com/ethereum/go-ethereum/eth/ethconfig"
 		`,
@ -2032,7 +2026,7 @@ var bindTests = []struct {
 			var (
 				key, _  = crypto.GenerateKey()
 				user, _ = bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
-				sim     = backends.NewSimulatedBackend(types.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
+				sim     = backends.NewSimulatedBackend(core.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, ethconfig.Defaults.Miner.GasCeil)
 			)
 			_, tx, _, err := DeployRangeKeyword(user, sim)
 			if err != nil {
@ -2040,7 +2034,7 @@ var bindTests = []struct {
 			}
 			sim.Commit()

-			if _, err = bind.WaitDeployed(context.Background(), sim, tx); err != nil {
+			if _, err = bind.WaitDeployed(nil, sim, tx); err != nil {
 				t.Errorf("error deploying the contract: %v", err)
 			}
 		`,
@ -2073,7 +2067,6 @@ var bindTests = []struct {
 // Tests that packages generated by the binder can be successfully compiled and
 // the requested tester run against it.
 func TestGolangBindings(t *testing.T) {
-	t.Parallel()
 	// Skip the test if no Go command can be found
 	gocmd := runtime.GOROOT() + "/bin/go"
 	if !common.FileExist(gocmd) {
--- a/accounts/abi/bind/util_test.go
+++ b/accounts/abi/bind/util_test.go
@ -24,11 +24,11 @@ import (
 	"time"

 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/ethclient/simulated"
-	"github.com/ethereum/go-ethereum/params"
 )

 var testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
@ -53,21 +53,21 @@ var waitDeployedTests = map[string]struct {
 }

 func TestWaitDeployed(t *testing.T) {
-	t.Parallel()
 	for name, test := range waitDeployedTests {
-		backend := simulated.NewBackend(
-			types.GenesisAlloc{
+		backend := backends.NewSimulatedBackend(
+			core.GenesisAlloc{
 				crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(10000000000000000)},
 			},
+			10000000,
 		)
 		defer backend.Close()

 		// Create the transaction
-		head, _ := backend.Client().HeaderByNumber(context.Background(), nil) // Should be child's, good enough
-		gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(params.GWei))
+		head, _ := backend.HeaderByNumber(context.Background(), nil) // Should be child's, good enough
+		gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1))

 		tx := types.NewContractCreation(0, big.NewInt(0), test.gas, gasPrice, common.FromHex(test.code))
-		tx, _ = types.SignTx(tx, types.LatestSignerForChainID(big.NewInt(1337)), testKey)
+		tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)

 		// Wait for it to get mined in the background.
 		var (
@ -77,12 +77,12 @@ func TestWaitDeployed(t *testing.T) {
 			ctx     = context.Background()
 		)
 		go func() {
-			address, err = bind.WaitDeployed(ctx, backend.Client(), tx)
+			address, err = bind.WaitDeployed(ctx, backend, tx)
 			close(mined)
 		}()

 		// Send and mine the transaction.
-		backend.Client().SendTransaction(ctx, tx)
+		backend.SendTransaction(ctx, tx)
 		backend.Commit()

 		select {
@ -100,40 +100,41 @@ func TestWaitDeployed(t *testing.T) {
 }

 func TestWaitDeployedCornerCases(t *testing.T) {
-	backend := simulated.NewBackend(
-		types.GenesisAlloc{
+	backend := backends.NewSimulatedBackend(
+		core.GenesisAlloc{
 			crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(10000000000000000)},
 		},
+		10000000,
 	)
 	defer backend.Close()

-	head, _ := backend.Client().HeaderByNumber(context.Background(), nil) // Should be child's, good enough
+	head, _ := backend.HeaderByNumber(context.Background(), nil) // Should be child's, good enough
 	gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1))

 	// Create a transaction to an account.
 	code := "6060604052600a8060106000396000f360606040526008565b00"
 	tx := types.NewTransaction(0, common.HexToAddress("0x01"), big.NewInt(0), 3000000, gasPrice, common.FromHex(code))
-	tx, _ = types.SignTx(tx, types.LatestSigner(params.AllDevChainProtocolChanges), testKey)
+	tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
-	backend.Client().SendTransaction(ctx, tx)
+	backend.SendTransaction(ctx, tx)
 	backend.Commit()
-	notContractCreation := errors.New("tx is not contract creation")
-	if _, err := bind.WaitDeployed(ctx, backend.Client(), tx); err.Error() != notContractCreation.Error() {
-		t.Errorf("error mismatch: want %q, got %q, ", notContractCreation, err)
+	notContentCreation := errors.New("tx is not contract creation")
+	if _, err := bind.WaitDeployed(ctx, backend, tx); err.Error() != notContentCreation.Error() {
+		t.Errorf("error missmatch: want %q, got %q, ", notContentCreation, err)
 	}

 	// Create a transaction that is not mined.
 	tx = types.NewContractCreation(1, big.NewInt(0), 3000000, gasPrice, common.FromHex(code))
-	tx, _ = types.SignTx(tx, types.LatestSigner(params.AllDevChainProtocolChanges), testKey)
+	tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)

 	go func() {
 		contextCanceled := errors.New("context canceled")
-		if _, err := bind.WaitDeployed(ctx, backend.Client(), tx); err.Error() != contextCanceled.Error() {
-			t.Errorf("error mismatch: want %q, got %q, ", contextCanceled, err)
+		if _, err := bind.WaitDeployed(ctx, backend, tx); err.Error() != contextCanceled.Error() {
+			t.Errorf("error missmatch: want %q, got %q, ", contextCanceled, err)
 		}
 	}()

-	backend.Client().SendTransaction(ctx, tx)
+	backend.SendTransaction(ctx, tx)
 	cancel()
 }
--- a/accounts/abi/error.go
+++ b/accounts/abi/error.go
@ -18,6 +18,7 @@ package abi

 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"strings"

@ -83,10 +84,10 @@ func (e Error) String() string {

 func (e *Error) Unpack(data []byte) (interface{}, error) {
 	if len(data) < 4 {
-		return "", fmt.Errorf("insufficient data for unpacking: have %d, want at least 4", len(data))
+		return "", errors.New("invalid data for unpacking")
 	}
 	if !bytes.Equal(data[:4], e.ID[:4]) {
-		return "", fmt.Errorf("invalid identifier, have %#x want %#x", data[:4], e.ID[:4])
+		return "", errors.New("invalid data for unpacking")
 	}
 	return e.Inputs.Unpack(data[4:])
 }
--- a/accounts/abi/event_test.go
+++ b/accounts/abi/event_test.go
@ -81,7 +81,6 @@ var pledgeData1 = "00000000000000000000000000ce0d46d924cc8437c806721496599fc3ffa
 var mixedCaseData1 = "00000000000000000000000000000000000000000000000000000000000f42400000000000000000000000000000000000000000000000000000020489e8000000000000000000000000000000000000000000000000000000000000000f4241"

 func TestEventId(t *testing.T) {
-	t.Parallel()
 	var table = []struct {
 		definition   string
 		expectations map[string]common.Hash
@ -113,7 +112,6 @@ func TestEventId(t *testing.T) {
 }

 func TestEventString(t *testing.T) {
-	t.Parallel()
 	var table = []struct {
 		definition   string
 		expectations map[string]string
@ -148,7 +146,6 @@ func TestEventString(t *testing.T) {

 // TestEventMultiValueWithArrayUnpack verifies that array fields will be counted after parsing array.
 func TestEventMultiValueWithArrayUnpack(t *testing.T) {
-	t.Parallel()
 	definition := `[{"name": "test", "type": "event", "inputs": [{"indexed": false, "name":"value1", "type":"uint8[2]"},{"indexed": false, "name":"value2", "type":"uint8"}]}]`
 	abi, err := JSON(strings.NewReader(definition))
 	require.NoError(t, err)
@ -164,7 +161,6 @@ func TestEventMultiValueWithArrayUnpack(t *testing.T) {
 }

 func TestEventTupleUnpack(t *testing.T) {
-	t.Parallel()
 	type EventTransfer struct {
 		Value *big.Int
 	}
@ -355,7 +351,6 @@ func unpackTestEventData(dest interface{}, hexData string, jsonEvent []byte, ass

 // TestEventUnpackIndexed verifies that indexed field will be skipped by event decoder.
 func TestEventUnpackIndexed(t *testing.T) {
-	t.Parallel()
 	definition := `[{"name": "test", "type": "event", "inputs": [{"indexed": true, "name":"value1", "type":"uint8"},{"indexed": false, "name":"value2", "type":"uint8"}]}]`
 	type testStruct struct {
 		Value1 uint8 // indexed
@ -373,7 +368,6 @@ func TestEventUnpackIndexed(t *testing.T) {

 // TestEventIndexedWithArrayUnpack verifies that decoder will not overflow when static array is indexed input.
 func TestEventIndexedWithArrayUnpack(t *testing.T) {
-	t.Parallel()
 	definition := `[{"name": "test", "type": "event", "inputs": [{"indexed": true, "name":"value1", "type":"uint8[2]"},{"indexed": false, "name":"value2", "type":"string"}]}]`
 	type testStruct struct {
 		Value1 [2]uint8 // indexed
--- a/accounts/abi/method.go
+++ b/accounts/abi/method.go
@ -117,23 +117,24 @@ func NewMethod(name string, rawName string, funType FunctionType, mutability str
 		sig = fmt.Sprintf("%v(%v)", rawName, strings.Join(types, ","))
 		id = crypto.Keccak256([]byte(sig))[:4]
 	}
+	// Extract meaningful state mutability of solidity method.
+	// If it's default value, never print it.
+	state := mutability
+	if state == "nonpayable" {
+		state = ""
+	}
+	if state != "" {
+		state = state + " "
+	}
 	identity := fmt.Sprintf("function %v", rawName)
-	switch funType {
-	case Fallback:
+	if funType == Fallback {
 		identity = "fallback"
-	case Receive:
+	} else if funType == Receive {
 		identity = "receive"
-	case Constructor:
+	} else if funType == Constructor {
 		identity = "constructor"
 	}
-	var str string
-	// Extract meaningful state mutability of solidity method.
-	// If it's empty string or default value "nonpayable", never print it.
-	if mutability == "" || mutability == "nonpayable" {
-		str = fmt.Sprintf("%v(%v) returns(%v)", identity, strings.Join(inputNames, ", "), strings.Join(outputNames, ", "))
-	} else {
-		str = fmt.Sprintf("%v(%v) %s returns(%v)", identity, strings.Join(inputNames, ", "), mutability, strings.Join(outputNames, ", "))
-	}
+	str := fmt.Sprintf("%v(%v) %sreturns(%v)", identity, strings.Join(inputNames, ", "), state, strings.Join(outputNames, ", "))

 	return Method{
 		Name:            name,
--- a/accounts/abi/method_test.go
+++ b/accounts/abi/method_test.go
@ -35,7 +35,6 @@ const methoddata = `
 ]`

 func TestMethodString(t *testing.T) {
-	t.Parallel()
 	var table = []struct {
 		method      string
 		expectation string
@ -85,12 +84,11 @@ func TestMethodString(t *testing.T) {

 	for _, test := range table {
 		var got string
-		switch test.method {
-		case "fallback":
+		if test.method == "fallback" {
 			got = abi.Fallback.String()
-		case "receive":
+		} else if test.method == "receive" {
 			got = abi.Receive.String()
-		default:
+		} else {
 			got = abi.Methods[test.method].String()
 		}
 		if got != test.expectation {
@ -100,7 +98,6 @@ func TestMethodString(t *testing.T) {
 }

 func TestMethodSig(t *testing.T) {
-	t.Parallel()
 	var cases = []struct {
 		method string
 		expect string
--- a/accounts/abi/pack.go
+++ b/accounts/abi/pack.go
@ -57,7 +57,7 @@ func packElement(t Type, reflectValue reflect.Value) ([]byte, error) {
 			reflectValue = mustArrayToByteSlice(reflectValue)
 		}
 		if reflectValue.Type() != reflect.TypeOf([]byte{}) {
-			return []byte{}, errors.New("bytes type is neither slice nor array")
+			return []byte{}, errors.New("Bytes type is neither slice nor array")
 		}
 		return packBytesSlice(reflectValue.Bytes(), reflectValue.Len()), nil
 	case FixedBytesTy, FunctionTy:
@ -66,7 +66,7 @@ func packElement(t Type, reflectValue reflect.Value) ([]byte, error) {
 		}
 		return common.RightPadBytes(reflectValue.Bytes(), 32), nil
 	default:
-		return []byte{}, fmt.Errorf("could not pack element, unknown type: %v", t.T)
+		return []byte{}, fmt.Errorf("Could not pack element, unknown type: %v", t.T)
 	}
 }

--- a/accounts/abi/pack_test.go
+++ b/accounts/abi/pack_test.go
@ -32,11 +32,8 @@ import (

 // TestPack tests the general pack/unpack tests in packing_test.go
 func TestPack(t *testing.T) {
-	t.Parallel()
 	for i, test := range packUnpackTests {
-		i, test := i, test
 		t.Run(strconv.Itoa(i), func(t *testing.T) {
-			t.Parallel()
 			encb, err := hex.DecodeString(test.packed)
 			if err != nil {
 				t.Fatalf("invalid hex %s: %v", test.packed, err)
@ -60,7 +57,6 @@ func TestPack(t *testing.T) {
 }

 func TestMethodPack(t *testing.T) {
-	t.Parallel()
 	abi, err := JSON(strings.NewReader(jsondata))
 	if err != nil {
 		t.Fatal(err)
@ -181,7 +177,6 @@ func TestMethodPack(t *testing.T) {
 }

 func TestPackNumber(t *testing.T) {
-	t.Parallel()
 	tests := []struct {
 		value  reflect.Value
 		packed []byte
--- a/accounts/abi/reflect.go
+++ b/accounts/abi/reflect.go
@ -134,7 +134,7 @@ func setSlice(dst, src reflect.Value) error {
 		dst.Set(slice)
 		return nil
 	}
-	return errors.New("cannot set slice, destination not settable")
+	return errors.New("Cannot set slice, destination not settable")
 }

 func setArray(dst, src reflect.Value) error {
@ -155,7 +155,7 @@ func setArray(dst, src reflect.Value) error {
 		dst.Set(array)
 		return nil
 	}
-	return errors.New("cannot set array, destination not settable")
+	return errors.New("Cannot set array, destination not settable")
 }

 func setStruct(dst, src reflect.Value) error {
@ -163,7 +163,7 @@ func setStruct(dst, src reflect.Value) error {
 		srcField := src.Field(i)
 		dstField := dst.Field(i)
 		if !dstField.IsValid() || !srcField.IsValid() {
-			return fmt.Errorf("could not find src field: %v value: %v in destination", srcField.Type().Name(), srcField)
+			return fmt.Errorf("Could not find src field: %v value: %v in destination", srcField.Type().Name(), srcField)
 		}
 		if err := set(dstField, srcField); err != nil {
 			return err
--- a/accounts/abi/reflect_test.go
+++ b/accounts/abi/reflect_test.go
@ -170,11 +170,8 @@ var reflectTests = []reflectTest{
 }

 func TestReflectNameToStruct(t *testing.T) {
-	t.Parallel()
 	for _, test := range reflectTests {
-		test := test
 		t.Run(test.name, func(t *testing.T) {
-			t.Parallel()
 			m, err := mapArgNamesToStructFields(test.args, reflect.ValueOf(test.struc))
 			if len(test.err) > 0 {
 				if err == nil || err.Error() != test.err {
@ -195,7 +192,6 @@ func TestReflectNameToStruct(t *testing.T) {
 }

 func TestConvertType(t *testing.T) {
-	t.Parallel()
 	// Test Basic Struct
 	type T struct {
 		X *big.Int
--- a/accounts/abi/selector_parser_test.go
+++ b/accounts/abi/selector_parser_test.go
@ -24,7 +24,6 @@ import (
 )

 func TestParseSelector(t *testing.T) {
-	t.Parallel()
 	mkType := func(types ...interface{}) []ArgumentMarshaling {
 		var result []ArgumentMarshaling
 		for i, typeOrComponents := range types {
--- a/accounts/abi/topics.go
+++ b/accounts/abi/topics.go
@ -24,7 +24,6 @@ import (
 	"reflect"

 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/crypto"
 )

@ -42,7 +41,8 @@ func MakeTopics(query ...[]interface{}) ([][]common.Hash, error) {
 			case common.Address:
 				copy(topic[common.HashLength-common.AddressLength:], rule[:])
 			case *big.Int:
-				copy(topic[:], math.U256Bytes(rule))
+				blob := rule.Bytes()
+				copy(topic[common.HashLength-len(blob):], blob)
 			case bool:
 				if rule {
 					topic[common.HashLength-1] = 1
@ -75,7 +75,7 @@ func MakeTopics(query ...[]interface{}) ([][]common.Hash, error) {
 				copy(topic[:], hash[:])

 			default:
-				// todo(rjl493456442) according to solidity documentation, indexed event
+				// todo(rjl493456442) according solidity documentation, indexed event
 				// parameters that are not value types i.e. arrays and structs are not
 				// stored directly but instead a keccak256-hash of an encoding is stored.
 				//
--- a/accounts/abi/topics_test.go
+++ b/accounts/abi/topics_test.go
@ -17,7 +17,6 @@
 package abi

 import (
-	"math"
 	"math/big"
 	"reflect"
 	"testing"
@ -27,7 +26,6 @@ import (
 )

 func TestMakeTopics(t *testing.T) {
-	t.Parallel()
 	type args struct {
 		query [][]interface{}
 	}
@ -56,27 +54,9 @@ func TestMakeTopics(t *testing.T) {
 			false,
 		},
 		{
-			"support positive *big.Int types in topics",
-			args{[][]interface{}{
-				{big.NewInt(1)},
-				{big.NewInt(1).Lsh(big.NewInt(2), 254)},
-			}},
-			[][]common.Hash{
-				{common.HexToHash("0000000000000000000000000000000000000000000000000000000000000001")},
-				{common.Hash{128}},
-			},
-			false,
-		},
-		{
-			"support negative *big.Int types in topics",
-			args{[][]interface{}{
-				{big.NewInt(-1)},
-				{big.NewInt(math.MinInt64)},
-			}},
-			[][]common.Hash{
-				{common.MaxHash},
-				{common.HexToHash("ffffffffffffffffffffffffffffffffffffffffffffffff8000000000000000")},
-			},
+			"support *big.Int types in topics",
+			args{[][]interface{}{{big.NewInt(1).Lsh(big.NewInt(2), 254)}}},
+			[][]common.Hash{{common.Hash{128}}},
 			false,
 		},
 		{
@ -137,9 +117,7 @@ func TestMakeTopics(t *testing.T) {
 		},
 	}
 	for _, tt := range tests {
-		tt := tt
 		t.Run(tt.name, func(t *testing.T) {
-			t.Parallel()
 			got, err := MakeTopics(tt.args.query...)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("makeTopics() error = %v, wantErr %v", err, tt.wantErr)
@ -369,13 +347,10 @@ func setupTopicsTests() []topicTest {
 }

 func TestParseTopics(t *testing.T) {
-	t.Parallel()
 	tests := setupTopicsTests()

 	for _, tt := range tests {
-		tt := tt
 		t.Run(tt.name, func(t *testing.T) {
-			t.Parallel()
 			createObj := tt.args.createObj()
 			if err := ParseTopics(createObj, tt.args.fields, tt.args.topics); (err != nil) != tt.wantErr {
 				t.Errorf("parseTopics() error = %v, wantErr %v", err, tt.wantErr)
@ -389,13 +364,10 @@ func TestParseTopics(t *testing.T) {
 }

 func TestParseTopicsIntoMap(t *testing.T) {
-	t.Parallel()
 	tests := setupTopicsTests()

 	for _, tt := range tests {
-		tt := tt
 		t.Run(tt.name, func(t *testing.T) {
-			t.Parallel()
 			outMap := make(map[string]interface{})
 			if err := ParseTopicsIntoMap(outMap, tt.args.fields, tt.args.topics); (err != nil) != tt.wantErr {
 				t.Errorf("parseTopicsIntoMap() error = %v, wantErr %v", err, tt.wantErr)
--- a/accounts/abi/type_test.go
+++ b/accounts/abi/type_test.go
@ -31,7 +31,6 @@ type typeWithoutStringer Type

 // Tests that all allowed types get recognized by the type parser.
 func TestTypeRegexp(t *testing.T) {
-	t.Parallel()
 	tests := []struct {
 		blob       string
 		components []ArgumentMarshaling
@ -118,7 +117,6 @@ func TestTypeRegexp(t *testing.T) {
 }

 func TestTypeCheck(t *testing.T) {
-	t.Parallel()
 	for i, test := range []struct {
 		typ        string
 		components []ArgumentMarshaling
@ -310,7 +308,6 @@ func TestTypeCheck(t *testing.T) {
 }

 func TestInternalType(t *testing.T) {
-	t.Parallel()
 	components := []ArgumentMarshaling{{Name: "a", Type: "int64"}}
 	internalType := "struct a.b[]"
 	kind := Type{
@ -335,7 +332,6 @@ func TestInternalType(t *testing.T) {
 }

 func TestGetTypeSize(t *testing.T) {
-	t.Parallel()
 	var testCases = []struct {
 		typ        string
 		components []ArgumentMarshaling
@ -372,7 +368,6 @@ func TestGetTypeSize(t *testing.T) {
 }

 func TestNewFixedBytesOver32(t *testing.T) {
-	t.Parallel()
 	_, err := NewType("bytes4096", "", nil)
 	if err == nil {
 		t.Errorf("fixed bytes with size over 32 is not spec'd")
--- a/accounts/abi/unpack.go
+++ b/accounts/abi/unpack.go
@ -160,14 +160,13 @@ func forEachUnpack(t Type, output []byte, start, size int) (interface{}, error)
 	// this value will become our slice or our array, depending on the type
 	var refSlice reflect.Value

-	switch t.T {
-	case SliceTy:
+	if t.T == SliceTy {
 		// declare our slice
 		refSlice = reflect.MakeSlice(t.GetType(), size, size)
-	case ArrayTy:
+	} else if t.T == ArrayTy {
 		// declare our array
 		refSlice = reflect.New(t.GetType()).Elem()
-	default:
+	} else {
 		return nil, errors.New("abi: invalid type in array/slice unpacking stage")
 	}

--- a/accounts/abi/unpack_test.go
+++ b/accounts/abi/unpack_test.go
@ -33,7 +33,6 @@ import (

 // TestUnpack tests the general pack/unpack tests in packing_test.go
 func TestUnpack(t *testing.T) {
-	t.Parallel()
 	for i, test := range packUnpackTests {
 		t.Run(strconv.Itoa(i)+" "+test.def, func(t *testing.T) {
 			//Unpack
@ -207,13 +206,13 @@ var unpackTests = []unpackTest{
 		def:  `[{"type":"bool"}]`,
 		enc:  "",
 		want: false,
-		err:  "abi: attempting to unmarshal an empty string while arguments are expected",
+		err:  "abi: attempting to unmarshall an empty string while arguments are expected",
 	},
 	{
 		def:  `[{"type":"bytes32","indexed":true},{"type":"uint256","indexed":false}]`,
 		enc:  "",
 		want: false,
-		err:  "abi: attempting to unmarshal an empty string while arguments are expected",
+		err:  "abi: attempting to unmarshall an empty string while arguments are expected",
 	},
 	{
 		def:  `[{"type":"bool","indexed":true},{"type":"uint64","indexed":true}]`,
@ -225,7 +224,6 @@ var unpackTests = []unpackTest{
 // TestLocalUnpackTests runs test specially designed only for unpacking.
 // All test cases that can be used to test packing and unpacking should move to packing_test.go
 func TestLocalUnpackTests(t *testing.T) {
-	t.Parallel()
 	for i, test := range unpackTests {
 		t.Run(strconv.Itoa(i), func(t *testing.T) {
 			//Unpack
@ -253,7 +251,6 @@ func TestLocalUnpackTests(t *testing.T) {
 }

 func TestUnpackIntoInterfaceSetDynamicArrayOutput(t *testing.T) {
-	t.Parallel()
 	abi, err := JSON(strings.NewReader(`[{"constant":true,"inputs":[],"name":"testDynamicFixedBytes15","outputs":[{"name":"","type":"bytes15[]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"testDynamicFixedBytes32","outputs":[{"name":"","type":"bytes32[]"}],"payable":false,"stateMutability":"view","type":"function"}]`))
 	if err != nil {
 		t.Fatal(err)
@ -324,7 +321,6 @@ func methodMultiReturn(require *require.Assertions) (ABI, []byte, methodMultiOut
 }

 func TestMethodMultiReturn(t *testing.T) {
-	t.Parallel()
 	type reversed struct {
 		String string
 		Int    *big.Int
@ -404,7 +400,6 @@ func TestMethodMultiReturn(t *testing.T) {
 }

 func TestMultiReturnWithArray(t *testing.T) {
-	t.Parallel()
 	const definition = `[{"name" : "multi", "type": "function", "outputs": [{"type": "uint64[3]"}, {"type": "uint64"}]}]`
 	abi, err := JSON(strings.NewReader(definition))
 	if err != nil {
@ -428,7 +423,6 @@ func TestMultiReturnWithArray(t *testing.T) {
 }

 func TestMultiReturnWithStringArray(t *testing.T) {
-	t.Parallel()
 	const definition = `[{"name" : "multi", "type": "function", "outputs": [{"name": "","type": "uint256[3]"},{"name": "","type": "address"},{"name": "","type": "string[2]"},{"name": "","type": "bool"}]}]`
 	abi, err := JSON(strings.NewReader(definition))
 	if err != nil {
@ -459,7 +453,6 @@ func TestMultiReturnWithStringArray(t *testing.T) {
 }

 func TestMultiReturnWithStringSlice(t *testing.T) {
-	t.Parallel()
 	const definition = `[{"name" : "multi", "type": "function", "outputs": [{"name": "","type": "string[]"},{"name": "","type": "uint256[]"}]}]`
 	abi, err := JSON(strings.NewReader(definition))
 	if err != nil {
@ -492,7 +485,6 @@ func TestMultiReturnWithStringSlice(t *testing.T) {
 }

 func TestMultiReturnWithDeeplyNestedArray(t *testing.T) {
-	t.Parallel()
 	// Similar to TestMultiReturnWithArray, but with a special case in mind:
 	//  values of nested static arrays count towards the size as well, and any element following
 	//  after such nested array argument should be read with the correct offset,
@ -533,7 +525,6 @@ func TestMultiReturnWithDeeplyNestedArray(t *testing.T) {
 }

 func TestUnmarshal(t *testing.T) {
-	t.Parallel()
 	const definition = `[
 	{ "name" : "int", "type": "function", "outputs": [ { "type": "uint256" } ] },
 	{ "name" : "bool", "type": "function", "outputs": [ { "type": "bool" } ] },
@ -783,7 +774,6 @@ func TestUnmarshal(t *testing.T) {
 }

 func TestUnpackTuple(t *testing.T) {
-	t.Parallel()
 	const simpleTuple = `[{"name":"tuple","type":"function","outputs":[{"type":"tuple","name":"ret","components":[{"type":"int256","name":"a"},{"type":"int256","name":"b"}]}]}]`
 	abi, err := JSON(strings.NewReader(simpleTuple))
 	if err != nil {
@ -886,7 +876,6 @@ func TestUnpackTuple(t *testing.T) {
 }

 func TestOOMMaliciousInput(t *testing.T) {
-	t.Parallel()
 	oomTests := []unpackTest{
 		{
 			def: `[{"type": "uint8[]"}]`,
@ -957,7 +946,6 @@ func TestOOMMaliciousInput(t *testing.T) {
 }

 func TestPackAndUnpackIncompatibleNumber(t *testing.T) {
-	t.Parallel()
 	var encodeABI Arguments
 	uint256Ty, err := NewType("uint256", "", nil)
 	if err != nil {
--- a/accounts/accounts_test.go
+++ b/accounts/accounts_test.go
@ -24,7 +24,6 @@ import (
 )

 func TestTextHash(t *testing.T) {
-	t.Parallel()
 	hash := TextHash([]byte("Hello Joe"))
 	want := hexutil.MustDecode("0xa080337ae51c4e064c189e113edd0ba391df9206e2f49db658bb32cf2911730b")
 	if !bytes.Equal(hash, want) {
--- a/accounts/external/backend.go
+++ b/accounts/external/backend.go
@ -163,7 +163,7 @@ func (api *ExternalSigner) SignData(account accounts.Account, mimeType string, d
 		hexutil.Encode(data)); err != nil {
 		return nil, err
 	}
-	// If V is on 27/28-form, convert to 0/1 for Clique and Parlia
+	// If V is on 27/28-form, convert to to 0/1 for Clique and Parlia
 	if (mimeType == accounts.MimetypeClique || mimeType == accounts.MimetypeParlia) && (res[64] == 27 || res[64] == 28) {
 		res[64] -= 27 // Transform V from 27/28 to 0/1 for Clique and Parlia use
 	}
--- a/accounts/hd_test.go
+++ b/accounts/hd_test.go
@ -25,7 +25,6 @@ import (
 // Tests that HD derivation paths can be correctly parsed into our internal binary
 // representation.
 func TestHDPathParsing(t *testing.T) {
-	t.Parallel()
 	tests := []struct {
 		input  string
 		output DerivationPath
@ -90,7 +89,6 @@ func testDerive(t *testing.T, next func() DerivationPath, expected []string) {
 }

 func TestHdPathIteration(t *testing.T) {
-	t.Parallel()
 	testDerive(t, DefaultIterator(DefaultBaseDerivationPath),
 		[]string{
 			"m/44'/60'/0'/0/0", "m/44'/60'/0'/0/1",
--- a/accounts/keystore/account_cache_test.go
+++ b/accounts/keystore/account_cache_test.go
@ -51,7 +51,7 @@ var (
 	}
 )

-// waitWatcherStart waits up to 1s for the keystore watcher to start.
+// waitWatcherStarts waits up to 1s for the keystore watcher to start.
 func waitWatcherStart(ks *KeyStore) bool {
 	// On systems where file watch is not supported, just return "ok".
 	if !ks.cache.watcher.enabled() {
@ -68,7 +68,7 @@ func waitWatcherStart(ks *KeyStore) bool {

 func waitForAccounts(wantAccounts []accounts.Account, ks *KeyStore) error {
 	var list []accounts.Account
-	for t0 := time.Now(); time.Since(t0) < 5*time.Second; time.Sleep(100 * time.Millisecond) {
+	for t0 := time.Now(); time.Since(t0) < 5*time.Second; time.Sleep(200 * time.Millisecond) {
 		list = ks.Accounts()
 		if reflect.DeepEqual(list, wantAccounts) {
 			// ks should have also received change notifications
@ -152,7 +152,6 @@ func TestWatchNoDir(t *testing.T) {
 }

 func TestCacheInitialReload(t *testing.T) {
-	t.Parallel()
 	cache, _ := newAccountCache(cachetestDir)
 	accounts := cache.accounts()
 	if !reflect.DeepEqual(accounts, cachetestAccounts) {
@ -161,7 +160,6 @@ func TestCacheInitialReload(t *testing.T) {
 }

 func TestCacheAddDeleteOrder(t *testing.T) {
-	t.Parallel()
 	cache, _ := newAccountCache("testdata/no-such-dir")
 	cache.watcher.running = true // prevent unexpected reloads

@ -246,7 +244,6 @@ func TestCacheAddDeleteOrder(t *testing.T) {
 }

 func TestCacheFind(t *testing.T) {
-	t.Parallel()
 	dir := filepath.Join("testdata", "dir")
 	cache, _ := newAccountCache(dir)
 	cache.watcher.running = true // prevent unexpected reloads
@ -353,11 +350,12 @@ func TestUpdatedKeyfileContents(t *testing.T) {
 		return
 	}
 	// needed so that modTime of `file` is different to its current value after forceCopyFile
-	os.Chtimes(file, time.Now().Add(-time.Second), time.Now().Add(-time.Second))
+	time.Sleep(time.Second)

 	// Now replace file contents
 	if err := forceCopyFile(file, cachetestAccounts[1].URL.Path); err != nil {
 		t.Fatal(err)
+		return
 	}
 	wantAccounts = []accounts.Account{cachetestAccounts[1]}
 	wantAccounts[0].URL = accounts.URL{Scheme: KeyStoreScheme, Path: file}
@ -368,11 +366,12 @@ func TestUpdatedKeyfileContents(t *testing.T) {
 	}

 	// needed so that modTime of `file` is different to its current value after forceCopyFile
-	os.Chtimes(file, time.Now().Add(-time.Second), time.Now().Add(-time.Second))
+	time.Sleep(time.Second)

 	// Now replace file contents again
 	if err := forceCopyFile(file, cachetestAccounts[2].URL.Path); err != nil {
 		t.Fatal(err)
+		return
 	}
 	wantAccounts = []accounts.Account{cachetestAccounts[2]}
 	wantAccounts[0].URL = accounts.URL{Scheme: KeyStoreScheme, Path: file}
@ -383,11 +382,12 @@ func TestUpdatedKeyfileContents(t *testing.T) {
 	}

 	// needed so that modTime of `file` is different to its current value after os.WriteFile
-	os.Chtimes(file, time.Now().Add(-time.Second), time.Now().Add(-time.Second))
+	time.Sleep(time.Second)

 	// Now replace file contents with crap
 	if err := os.WriteFile(file, []byte("foo"), 0600); err != nil {
 		t.Fatal(err)
+		return
 	}
 	if err := waitForAccounts([]accounts.Account{}, ks); err != nil {
 		t.Errorf("Emptying account file failed")
--- a/accounts/keystore/keystore_test.go
+++ b/accounts/keystore/keystore_test.go
@ -36,7 +36,6 @@ import (
 var testSigData = make([]byte, 32)

 func TestKeyStore(t *testing.T) {
-	t.Parallel()
 	dir, ks := tmpKeyStore(t, true)

 	a, err := ks.NewAccount("foo")
@ -71,7 +70,6 @@ func TestKeyStore(t *testing.T) {
 }

 func TestSign(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStore(t, true)

 	pass := "" // not used but required by API
@ -88,7 +86,6 @@ func TestSign(t *testing.T) {
 }

 func TestSignWithPassphrase(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStore(t, true)

 	pass := "passwd"
@ -283,7 +280,6 @@ type walletEvent struct {
 // Tests that wallet notifications and correctly fired when accounts are added
 // or deleted from the keystore.
 func TestWalletNotifications(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStore(t, false)

 	// Subscribe to the wallet feed and collect events.
@ -343,9 +339,8 @@ func TestWalletNotifications(t *testing.T) {
 	checkEvents(t, wantEvents, events)
 }

-// TestImportECDSA tests the import functionality of a keystore.
+// TestImportExport tests the import functionality of a keystore.
 func TestImportECDSA(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStore(t, true)
 	key, err := crypto.GenerateKey()
 	if err != nil {
@ -362,9 +357,8 @@ func TestImportECDSA(t *testing.T) {
 	}
 }

-// TestImportExport tests the import and export functionality of a keystore.
+// TestImportECDSA tests the import and export functionality of a keystore.
 func TestImportExport(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStore(t, true)
 	acc, err := ks.NewAccount("old")
 	if err != nil {
@ -393,7 +387,6 @@ func TestImportExport(t *testing.T) {
 // TestImportRace tests the keystore on races.
 // This test should fail under -race if importing races.
 func TestImportRace(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStore(t, true)
 	acc, err := ks.NewAccount("old")
 	if err != nil {
--- a/accounts/keystore/passphrase.go
+++ b/accounts/keystore/passphrase.go
@ -136,7 +136,7 @@ func (ks keyStorePassphrase) JoinPath(filename string) string {
 	return filepath.Join(ks.keysDirPath, filename)
 }

-// EncryptDataV3 encrypts the data given as 'data' with the password 'auth'.
+// Encryptdata encrypts the data given as 'data' with the password 'auth'.
 func EncryptDataV3(data, auth []byte, scryptN, scryptP int) (CryptoJSON, error) {
 	salt := make([]byte, 32)
 	if _, err := io.ReadFull(rand.Reader, salt); err != nil {
--- a/accounts/keystore/passphrase_test.go
+++ b/accounts/keystore/passphrase_test.go
@ -30,7 +30,6 @@ const (

 // Tests that a json key file can be decrypted and encrypted in multiple rounds.
 func TestKeyEncryptDecrypt(t *testing.T) {
-	t.Parallel()
 	keyjson, err := os.ReadFile("testdata/very-light-scrypt.json")
 	if err != nil {
 		t.Fatal(err)
@ -55,7 +54,7 @@ func TestKeyEncryptDecrypt(t *testing.T) {
 		// Recrypt with a new password and start over
 		password += "new data appended" // nolint: gosec
 		if keyjson, err = EncryptKey(key, password, veryLightScryptN, veryLightScryptP); err != nil {
-			t.Errorf("test %d: failed to re-encrypt key %v", i, err)
+			t.Errorf("test %d: failed to recrypt key %v", i, err)
 		}
 	}
 }
--- a/accounts/keystore/plain_test.go
+++ b/accounts/keystore/plain_test.go
@ -40,7 +40,6 @@ func tmpKeyStoreIface(t *testing.T, encrypted bool) (dir string, ks keyStore) {
 }

 func TestKeyStorePlain(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStoreIface(t, false)

 	pass := "" // not used but required by API
@ -61,7 +60,6 @@ func TestKeyStorePlain(t *testing.T) {
 }

 func TestKeyStorePassphrase(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStoreIface(t, true)

 	pass := "foo"
@ -82,7 +80,6 @@ func TestKeyStorePassphrase(t *testing.T) {
 }

 func TestKeyStorePassphraseDecryptionFail(t *testing.T) {
-	t.Parallel()
 	_, ks := tmpKeyStoreIface(t, true)

 	pass := "foo"
@ -96,7 +93,6 @@ func TestKeyStorePassphraseDecryptionFail(t *testing.T) {
 }

 func TestImportPreSaleKey(t *testing.T) {
-	t.Parallel()
 	dir, ks := tmpKeyStoreIface(t, true)

 	// file content of a presale key file generated with:
--- a/accounts/keystore/watch.go
+++ b/accounts/keystore/watch.go
@ -20,7 +20,6 @@
 package keystore

 import (
-	"os"
 	"time"

 	"github.com/ethereum/go-ethereum/log"
@ -78,9 +77,7 @@ func (w *watcher) loop() {
 	}
 	defer watcher.Close()
 	if err := watcher.Add(w.ac.keydir); err != nil {
-		if !os.IsNotExist(err) {
-			logger.Warn("Failed to watch keystore folder", "err", err)
-		}
+		logger.Warn("Failed to watch keystore folder", "err", err)
 		return
 	}

@ -125,7 +122,7 @@ func (w *watcher) loop() {
 			if !ok {
 				return
 			}
-			log.Info("Filesystem watcher error", "err", err)
+			log.Info("Filsystem watcher error", "err", err)
 		case <-debounce.C:
 			w.ac.scanAccounts()
 			rescanTriggered = false
--- a/accounts/manager.go
+++ b/accounts/manager.go
@ -98,9 +98,6 @@ func NewManager(config *Config, backends ...Backend) *Manager {

 // Close terminates the account manager's internal notification processes.
 func (am *Manager) Close() error {
-	for _, w := range am.wallets {
-		w.Close()
-	}
 	errc := make(chan error)
 	am.quit <- errc
 	return <-errc
--- a/accounts/scwallet/README.md
+++ b/accounts/scwallet/README.md
@ -8,7 +8,7 @@

 ## Preparing the smartcard

-  **WARNING: FOLLOWING THESE INSTRUCTIONS WILL DESTROY THE MASTER KEY ON YOUR CARD. ONLY PROCEED IF NO FUNDS ARE ASSOCIATED WITH THESE ACCOUNTS**
+  **WARNING: FOILLOWING THESE INSTRUCTIONS WILL DESTROY THE MASTER KEY ON YOUR CARD. ONLY PROCEED IF NO FUNDS ARE ASSOCIATED WITH THESE ACCOUNTS**

  You can use status' [keycard-cli](https://github.com/status-im/keycard-cli) and you should get _at least_ version 2.1.1 of their [smartcard application](https://github.com/status-im/status-keycard/releases/download/2.2.1/keycard_v2.2.1.cap)

--- a/accounts/scwallet/hub.go
+++ b/accounts/scwallet/hub.go
@ -241,7 +241,7 @@ func (hub *Hub) refreshWallets() {
 			card.Disconnect(pcsc.LeaveCard)
 			continue
 		}
-		// Card connected, start tracking among the wallets
+		// Card connected, start tracking in amongs the wallets
 		hub.wallets[reader] = wallet
 		events = append(events, accounts.WalletEvent{Wallet: wallet, Kind: accounts.WalletArrived})
 	}
--- a/accounts/scwallet/wallet.go
+++ b/accounts/scwallet/wallet.go
@ -776,16 +776,16 @@ func (w *Wallet) findAccountPath(account accounts.Account) (accounts.DerivationP
 		return nil, fmt.Errorf("scheme %s does not match wallet scheme %s", account.URL.Scheme, w.Hub.scheme)
 	}

-	url, path, found := strings.Cut(account.URL.Path, "/")
-	if !found {
+	parts := strings.SplitN(account.URL.Path, "/", 2)
+	if len(parts) != 2 {
 		return nil, fmt.Errorf("invalid URL format: %s", account.URL)
 	}

-	if url != fmt.Sprintf("%x", w.PublicKey[1:3]) {
+	if parts[0] != fmt.Sprintf("%x", w.PublicKey[1:3]) {
 		return nil, fmt.Errorf("URL %s is not for this wallet", account.URL)
 	}

-	return accounts.ParseDerivationPath(path)
+	return accounts.ParseDerivationPath(parts[1])
 }

 // Session represents a secured communication session with the wallet.
--- a/accounts/url_test.go
+++ b/accounts/url_test.go
@ -21,7 +21,6 @@ import (
 )

 func TestURLParsing(t *testing.T) {
-	t.Parallel()
 	url, err := parseURL("https://ethereum.org")
 	if err != nil {
 		t.Errorf("unexpected error: %v", err)
@ -41,7 +40,6 @@ func TestURLParsing(t *testing.T) {
 }

 func TestURLString(t *testing.T) {
-	t.Parallel()
 	url := URL{Scheme: "https", Path: "ethereum.org"}
 	if url.String() != "https://ethereum.org" {
 		t.Errorf("expected: %v, got: %v", "https://ethereum.org", url.String())
@ -54,11 +52,10 @@ func TestURLString(t *testing.T) {
 }

 func TestURLMarshalJSON(t *testing.T) {
-	t.Parallel()
 	url := URL{Scheme: "https", Path: "ethereum.org"}
 	json, err := url.MarshalJSON()
 	if err != nil {
-		t.Errorf("unexpected error: %v", err)
+		t.Errorf("unexpcted error: %v", err)
 	}
 	if string(json) != "\"https://ethereum.org\"" {
 		t.Errorf("expected: %v, got: %v", "\"https://ethereum.org\"", string(json))
@ -66,11 +63,10 @@ func TestURLMarshalJSON(t *testing.T) {
 }

 func TestURLUnmarshalJSON(t *testing.T) {
-	t.Parallel()
 	url := &URL{}
 	err := url.UnmarshalJSON([]byte("\"https://ethereum.org\""))
 	if err != nil {
-		t.Errorf("unexpected error: %v", err)
+		t.Errorf("unexpcted error: %v", err)
 	}
 	if url.Scheme != "https" {
 		t.Errorf("expected: %v, got: %v", "https", url.Scheme)
@ -81,7 +77,6 @@ func TestURLUnmarshalJSON(t *testing.T) {
 }

 func TestURLComparison(t *testing.T) {
-	t.Parallel()
 	tests := []struct {
 		urlA   URL
 		urlB   URL
--- a/accounts/usbwallet/ledger.go
+++ b/accounts/usbwallet/ledger.go
@ -279,7 +279,7 @@ func (w *ledgerDriver) ledgerDerive(derivationPath []uint32) (common.Address, er
 	}
 	hexstr := reply[1 : 1+int(reply[0])]

-	// Decode the hex string into an Ethereum address and return
+	// Decode the hex sting into an Ethereum address and return
 	var address common.Address
 	if _, err = hex.Decode(address[:], hexstr); err != nil {
 		return common.Address{}, err
--- a/accounts/usbwallet/trezor/trezor.go
+++ b/accounts/usbwallet/trezor/trezor.go
@ -16,7 +16,7 @@

 // This file contains the implementation for interacting with the Trezor hardware
 // wallets. The wire protocol spec can be found on the SatoshiLabs website:
-// https://docs.trezor.io/trezor-firmware/common/message-workflows.html
+// https://wiki.trezor.io/Developers_guide-Message_Workflows

 // !!! STAHP !!!
 //
--- a/accounts/usbwallet/wallet.go
+++ b/accounts/usbwallet/wallet.go
@ -483,10 +483,6 @@ func (w *wallet) Derive(path accounts.DerivationPath, pin bool) (accounts.Accoun
 	w.stateLock.Lock()
 	defer w.stateLock.Unlock()

-	if w.device == nil {
-		return accounts.Account{}, accounts.ErrWalletClosed
-	}
-
 	if _, ok := w.paths[address]; !ok {
 		w.accounts = append(w.accounts, account)
 		w.paths[address] = make(accounts.DerivationPath, len(path))
--- a/appveyor.yml
+++ b/appveyor.yml
@ -54,4 +54,4 @@ for:
      - go run build/ci.go archive -arch %GETH_ARCH% -type zip -signer WINDOWS_SIGNING_KEY -upload gethstore/builds
      - go run build/ci.go nsis -arch %GETH_ARCH% -signer WINDOWS_SIGNING_KEY -upload gethstore/builds
    test_script:
-      - go run build/ci.go test -dlgo -arch %GETH_ARCH% -cc %GETH_CC% -short
+      - go run build/ci.go test -dlgo -arch %GETH_ARCH% -cc %GETH_CC%
--- a/beacon/engine/errors.go
+++ b/beacon/engine/errors.go
@ -80,7 +80,6 @@ var (
 	InvalidPayloadAttributes = &EngineAPIError{code: -38003, msg: "Invalid payload attributes"}
 	TooLargeRequest          = &EngineAPIError{code: -38004, msg: "Too large request"}
 	InvalidParams            = &EngineAPIError{code: -32602, msg: "Invalid parameters"}
-	UnsupportedFork          = &EngineAPIError{code: -38005, msg: "Unsupported fork"}

 	STATUS_INVALID         = ForkChoiceResponse{PayloadStatus: PayloadStatusV1{Status: INVALID}, PayloadID: nil}
 	STATUS_SYNCING         = ForkChoiceResponse{PayloadStatus: PayloadStatusV1{Status: SYNCING}, PayloadID: nil}
--- a/beacon/engine/gen_blockparams.go
+++ b/beacon/engine/gen_blockparams.go
@ -20,14 +20,12 @@ func (p PayloadAttributes) MarshalJSON() ([]byte, error) {
 		Random                common.Hash         `json:"prevRandao"            gencodec:"required"`
 		SuggestedFeeRecipient common.Address      `json:"suggestedFeeRecipient" gencodec:"required"`
 		Withdrawals           []*types.Withdrawal `json:"withdrawals"`
-		BeaconRoot            *common.Hash        `json:"parentBeaconBlockRoot"`
 	}
 	var enc PayloadAttributes
 	enc.Timestamp = hexutil.Uint64(p.Timestamp)
 	enc.Random = p.Random
 	enc.SuggestedFeeRecipient = p.SuggestedFeeRecipient
 	enc.Withdrawals = p.Withdrawals
-	enc.BeaconRoot = p.BeaconRoot
 	return json.Marshal(&enc)
 }

@ -38,7 +36,6 @@ func (p *PayloadAttributes) UnmarshalJSON(input []byte) error {
 		Random                *common.Hash        `json:"prevRandao"            gencodec:"required"`
 		SuggestedFeeRecipient *common.Address     `json:"suggestedFeeRecipient" gencodec:"required"`
 		Withdrawals           []*types.Withdrawal `json:"withdrawals"`
-		BeaconRoot            *common.Hash        `json:"parentBeaconBlockRoot"`
 	}
 	var dec PayloadAttributes
 	if err := json.Unmarshal(input, &dec); err != nil {
@ -59,8 +56,5 @@ func (p *PayloadAttributes) UnmarshalJSON(input []byte) error {
 	if dec.Withdrawals != nil {
 		p.Withdrawals = dec.Withdrawals
 	}
-	if dec.BeaconRoot != nil {
-		p.BeaconRoot = dec.BeaconRoot
-	}
 	return nil
 }
--- a/beacon/engine/gen_epe.go
+++ b/beacon/engine/gen_epe.go
@ -18,13 +18,11 @@ func (e ExecutionPayloadEnvelope) MarshalJSON() ([]byte, error) {
 		ExecutionPayload *ExecutableData `json:"executionPayload"  gencodec:"required"`
 		BlockValue       *hexutil.Big    `json:"blockValue"  gencodec:"required"`
 		BlobsBundle      *BlobsBundleV1  `json:"blobsBundle"`
-		Override         bool            `json:"shouldOverrideBuilder"`
 	}
 	var enc ExecutionPayloadEnvelope
 	enc.ExecutionPayload = e.ExecutionPayload
 	enc.BlockValue = (*hexutil.Big)(e.BlockValue)
 	enc.BlobsBundle = e.BlobsBundle
-	enc.Override = e.Override
 	return json.Marshal(&enc)
 }

@ -34,7 +32,6 @@ func (e *ExecutionPayloadEnvelope) UnmarshalJSON(input []byte) error {
 		ExecutionPayload *ExecutableData `json:"executionPayload"  gencodec:"required"`
 		BlockValue       *hexutil.Big    `json:"blockValue"  gencodec:"required"`
 		BlobsBundle      *BlobsBundleV1  `json:"blobsBundle"`
-		Override         *bool           `json:"shouldOverrideBuilder"`
 	}
 	var dec ExecutionPayloadEnvelope
 	if err := json.Unmarshal(input, &dec); err != nil {
@ -51,8 +48,5 @@ func (e *ExecutionPayloadEnvelope) UnmarshalJSON(input []byte) error {
 	if dec.BlobsBundle != nil {
 		e.BlobsBundle = dec.BlobsBundle
 	}
-	if dec.Override != nil {
-		e.Override = *dec.Override
-	}
 	return nil
 }
--- a/beacon/engine/types.go
+++ b/beacon/engine/types.go
@ -23,19 +23,10 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto/kzg4844"
 	"github.com/ethereum/go-ethereum/trie"
 )

-// PayloadVersion denotes the version of PayloadAttributes used to request the
-// building of the payload to commence.
-type PayloadVersion byte
-
-var (
-	PayloadV1 PayloadVersion = 0x1
-	PayloadV2 PayloadVersion = 0x2
-	PayloadV3 PayloadVersion = 0x3
-)
-
 //go:generate go run github.com/fjl/gencodec -type PayloadAttributes -field-override payloadAttributesMarshaling -out gen_blockparams.go

 // PayloadAttributes describes the environment context in which a block should
@ -45,7 +36,6 @@ type PayloadAttributes struct {
 	Random                common.Hash         `json:"prevRandao"            gencodec:"required"`
 	SuggestedFeeRecipient common.Address      `json:"suggestedFeeRecipient" gencodec:"required"`
 	Withdrawals           []*types.Withdrawal `json:"withdrawals"`
-	BeaconRoot            *common.Hash        `json:"parentBeaconBlockRoot"`
 }

 // JSON type overrides for PayloadAttributes.
@ -96,7 +86,6 @@ type ExecutionPayloadEnvelope struct {
 	ExecutionPayload *ExecutableData `json:"executionPayload"  gencodec:"required"`
 	BlockValue       *big.Int        `json:"blockValue"  gencodec:"required"`
 	BlobsBundle      *BlobsBundleV1  `json:"blobsBundle"`
-	Override         bool            `json:"shouldOverrideBuilder"`
 }

 type BlobsBundleV1 struct {
@ -125,21 +114,6 @@ type TransitionConfigurationV1 struct {
 // PayloadID is an identifier of the payload build process
 type PayloadID [8]byte

-// Version returns the payload version associated with the identifier.
-func (b PayloadID) Version() PayloadVersion {
-	return PayloadVersion(b[0])
-}
-
-// Is returns whether the identifier matches any of provided payload versions.
-func (b PayloadID) Is(versions ...PayloadVersion) bool {
-	for _, v := range versions {
-		if v == b.Version() {
-			return true
-		}
-	}
-	return false
-}
-
 func (b PayloadID) String() string {
 	return hexutil.Encode(b[:])
 }
@ -198,7 +172,7 @@ func decodeTransactions(enc [][]byte) ([]*types.Transaction, error) {
 // and that the blockhash of the constructed block matches the parameters. Nil
 // Withdrawals value will propagate through the returned block. Empty
 // Withdrawals value must be passed via non-nil, length 0 value in params.
-func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash, beaconRoot *common.Hash) (*types.Block, error) {
+func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash) (*types.Block, error) {
 	txs, err := decodeTransactions(params.Transactions)
 	if err != nil {
 		return nil, err
@ -234,25 +208,24 @@ func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash,
 		withdrawalsRoot = &h
 	}
 	header := &types.Header{
-		ParentHash:       params.ParentHash,
-		UncleHash:        types.EmptyUncleHash,
-		Coinbase:         params.FeeRecipient,
-		Root:             params.StateRoot,
-		TxHash:           types.DeriveSha(types.Transactions(txs), trie.NewStackTrie(nil)),
-		ReceiptHash:      params.ReceiptsRoot,
-		Bloom:            types.BytesToBloom(params.LogsBloom),
-		Difficulty:       common.Big0,
-		Number:           new(big.Int).SetUint64(params.Number),
-		GasLimit:         params.GasLimit,
-		GasUsed:          params.GasUsed,
-		Time:             params.Timestamp,
-		BaseFee:          params.BaseFeePerGas,
-		Extra:            params.ExtraData,
-		MixDigest:        params.Random,
-		WithdrawalsHash:  withdrawalsRoot,
-		ExcessBlobGas:    params.ExcessBlobGas,
-		BlobGasUsed:      params.BlobGasUsed,
-		ParentBeaconRoot: beaconRoot,
+		ParentHash:      params.ParentHash,
+		UncleHash:       types.EmptyUncleHash,
+		Coinbase:        params.FeeRecipient,
+		Root:            params.StateRoot,
+		TxHash:          types.DeriveSha(types.Transactions(txs), trie.NewStackTrie(nil)),
+		ReceiptHash:     params.ReceiptsRoot,
+		Bloom:           types.BytesToBloom(params.LogsBloom),
+		Difficulty:      common.Big0,
+		Number:          new(big.Int).SetUint64(params.Number),
+		GasLimit:        params.GasLimit,
+		GasUsed:         params.GasUsed,
+		Time:            params.Timestamp,
+		BaseFee:         params.BaseFeePerGas,
+		Extra:           params.ExtraData,
+		MixDigest:       params.Random,
+		WithdrawalsHash: withdrawalsRoot,
+		ExcessBlobGas:   params.ExcessBlobGas,
+		BlobGasUsed:     params.BlobGasUsed,
 	}
 	block := types.NewBlockWithHeader(header).WithBody(txs, nil /* uncles */).WithWithdrawals(params.Withdrawals)
 	if block.Hash() != params.BlockHash {
@ -263,7 +236,7 @@ func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash,

 // BlockToExecutableData constructs the ExecutableData structure by filling the
 // fields from the given block. It assumes the given block is post-merge block.
-func BlockToExecutableData(block *types.Block, fees *big.Int, sidecars types.BlobSidecars) *ExecutionPayloadEnvelope {
+func BlockToExecutableData(block *types.Block, fees *big.Int, blobs []kzg4844.Blob, commitments []kzg4844.Commitment, proofs []kzg4844.Proof) *ExecutionPayloadEnvelope {
 	data := &ExecutableData{
 		BlockHash:     block.Hash(),
 		ParentHash:    block.ParentHash(),
@ -283,19 +256,17 @@ func BlockToExecutableData(block *types.Block, fees *big.Int, sidecars types.Blo
 		BlobGasUsed:   block.BlobGasUsed(),
 		ExcessBlobGas: block.ExcessBlobGas(),
 	}
-	bundle := BlobsBundleV1{
+	blobsBundle := BlobsBundleV1{
 		Commitments: make([]hexutil.Bytes, 0),
 		Blobs:       make([]hexutil.Bytes, 0),
 		Proofs:      make([]hexutil.Bytes, 0),
 	}
-	for _, sidecar := range sidecars {
-		for j := range sidecar.Blobs {
-			bundle.Blobs = append(bundle.Blobs, hexutil.Bytes(sidecar.Blobs[j][:]))
-			bundle.Commitments = append(bundle.Commitments, hexutil.Bytes(sidecar.Commitments[j][:]))
-			bundle.Proofs = append(bundle.Proofs, hexutil.Bytes(sidecar.Proofs[j][:]))
-		}
+	for i := range blobs {
+		blobsBundle.Blobs = append(blobsBundle.Blobs, hexutil.Bytes(blobs[i][:]))
+		blobsBundle.Commitments = append(blobsBundle.Commitments, hexutil.Bytes(commitments[i][:]))
+		blobsBundle.Proofs = append(blobsBundle.Proofs, hexutil.Bytes(proofs[i][:]))
 	}
-	return &ExecutionPayloadEnvelope{ExecutionPayload: data, BlockValue: fees, BlobsBundle: &bundle, Override: false}
+	return &ExecutionPayloadEnvelope{ExecutionPayload: data, BlockValue: fees, BlobsBundle: &blobsBundle}
 }

 // ExecutionPayloadBodyV1 is used in the response to GetPayloadBodiesByHashV1 and GetPayloadBodiesByRangeV1
@ -303,21 +274,3 @@ type ExecutionPayloadBodyV1 struct {
 	TransactionData []hexutil.Bytes     `json:"transactions"`
 	Withdrawals     []*types.Withdrawal `json:"withdrawals"`
 }
-
-// Client identifiers to support ClientVersionV1.
-const (
-	ClientCode = "GE"
-	ClientName = "go-ethereum"
-)
-
-// ClientVersionV1 contains information which identifies a client implementation.
-type ClientVersionV1 struct {
-	Code    string `json:"code"`
-	Name    string `json:"clientName"`
-	Version string `json:"version"`
-	Commit  string `json:"commit"`
-}
-
-func (v *ClientVersionV1) String() string {
-	return fmt.Sprintf("%s-%s-%s-%s", v.Code, v.Name, v.Version, v.Commit)
-}
--- a/beacon/fakebeacon/api_func.go
+++ b/beacon/fakebeacon/api_func.go
@ -1,87 +0,0 @@
-package fakebeacon
-
-import (
-	"context"
-	"sort"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/crypto/kzg4844"
-	"github.com/ethereum/go-ethereum/internal/ethapi"
-	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/rpc"
-)
-
-type BlobSidecar struct {
-	Blob          kzg4844.Blob       `json:"blob"`
-	Index         int                `json:"index"`
-	KZGCommitment kzg4844.Commitment `json:"kzg_commitment"`
-	KZGProof      kzg4844.Proof      `json:"kzg_proof"`
-}
-
-type APIGetBlobSidecarsResponse struct {
-	Data []*BlobSidecar `json:"data"`
-}
-
-type ReducedGenesisData struct {
-	GenesisTime string `json:"genesis_time"`
-}
-
-type APIGenesisResponse struct {
-	Data ReducedGenesisData `json:"data"`
-}
-
-type ReducedConfigData struct {
-	SecondsPerSlot string `json:"SECONDS_PER_SLOT"`
-}
-
-type IndexedBlobHash struct {
-	Index int         // absolute index in the block, a.k.a. position in sidecar blobs array
-	Hash  common.Hash // hash of the blob, used for consistency checks
-}
-
-func configSpec() ReducedConfigData {
-	return ReducedConfigData{SecondsPerSlot: "1"}
-}
-
-func beaconGenesis() APIGenesisResponse {
-	return APIGenesisResponse{Data: ReducedGenesisData{GenesisTime: "0"}}
-}
-
-func beaconBlobSidecars(ctx context.Context, backend ethapi.Backend, slot uint64, indices []int) (APIGetBlobSidecarsResponse, error) {
-	var blockNrOrHash rpc.BlockNumberOrHash
-	header, err := fetchBlockNumberByTime(ctx, int64(slot), backend)
-	if err != nil {
-		log.Error("Error fetching block number", "slot", slot, "indices", indices)
-		return APIGetBlobSidecarsResponse{}, err
-	}
-	sideCars, err := backend.GetBlobSidecars(ctx, header.Hash())
-	if err != nil {
-		log.Error("Error fetching Sidecars", "blockNrOrHash", blockNrOrHash, "err", err)
-		return APIGetBlobSidecarsResponse{}, err
-	}
-	sort.Ints(indices)
-	fullBlob := len(indices) == 0
-	res := APIGetBlobSidecarsResponse{}
-	idx := 0
-	curIdx := 0
-	for _, sideCar := range sideCars {
-		for i := 0; i < len(sideCar.Blobs); i++ {
-			//hash := kZGToVersionedHash(sideCar.Commitments[i])
-			if !fullBlob && curIdx >= len(indices) {
-				break
-			}
-			if fullBlob || idx == indices[curIdx] {
-				res.Data = append(res.Data, &BlobSidecar{
-					Index:         idx,
-					Blob:          sideCar.Blobs[i],
-					KZGCommitment: sideCar.Commitments[i],
-					KZGProof:      sideCar.Proofs[i],
-				})
-				curIdx++
-			}
-			idx++
-		}
-	}
-
-	return res, nil
-}
--- a/beacon/fakebeacon/handlers.go
+++ b/beacon/fakebeacon/handlers.go
@ -1,88 +0,0 @@
-package fakebeacon
-
-import (
-	"fmt"
-	"net/http"
-	"net/url"
-	"strconv"
-	"strings"
-
-	"github.com/prysmaticlabs/prysm/v5/api/server/structs"
-	field_params "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
-	"github.com/prysmaticlabs/prysm/v5/network/httputil"
-)
-
-var (
-	versionMethod        = "/eth/v1/node/version"
-	specMethod           = "/eth/v1/config/spec"
-	genesisMethod        = "/eth/v1/beacon/genesis"
-	sidecarsMethodPrefix = "/eth/v1/beacon/blob_sidecars/{slot}"
-)
-
-func VersionMethod(w http.ResponseWriter, r *http.Request) {
-	resp := &structs.GetVersionResponse{
-		Data: &structs.Version{
-			Version: "",
-		},
-	}
-	httputil.WriteJson(w, resp)
-}
-
-func SpecMethod(w http.ResponseWriter, r *http.Request) {
-	httputil.WriteJson(w, &structs.GetSpecResponse{Data: configSpec()})
-}
-
-func GenesisMethod(w http.ResponseWriter, r *http.Request) {
-	httputil.WriteJson(w, beaconGenesis())
-}
-
-func (s *Service) SidecarsMethod(w http.ResponseWriter, r *http.Request) {
-	indices, err := parseIndices(r.URL)
-	if err != nil {
-		httputil.HandleError(w, err.Error(), http.StatusBadRequest)
-		return
-	}
-	segments := strings.Split(r.URL.Path, "/")
-	slot, err := strconv.ParseUint(segments[len(segments)-1], 10, 64)
-	if err != nil {
-		httputil.HandleError(w, "not a valid slot(timestamp)", http.StatusBadRequest)
-		return
-	}
-
-	resp, err := beaconBlobSidecars(r.Context(), s.backend, slot, indices)
-	if err != nil {
-		httputil.HandleError(w, err.Error(), http.StatusBadRequest)
-		return
-	}
-	httputil.WriteJson(w, resp)
-}
-
-// parseIndices filters out invalid and duplicate blob indices
-func parseIndices(url *url.URL) ([]int, error) {
-	rawIndices := url.Query()["indices"]
-	indices := make([]int, 0, field_params.MaxBlobsPerBlock)
-	invalidIndices := make([]string, 0)
-loop:
-	for _, raw := range rawIndices {
-		ix, err := strconv.Atoi(raw)
-		if err != nil {
-			invalidIndices = append(invalidIndices, raw)
-			continue
-		}
-		if ix >= field_params.MaxBlobsPerBlock {
-			invalidIndices = append(invalidIndices, raw)
-			continue
-		}
-		for i := range indices {
-			if ix == indices[i] {
-				continue loop
-			}
-		}
-		indices = append(indices, ix)
-	}
-
-	if len(invalidIndices) > 0 {
-		return nil, fmt.Errorf("requested blob indices %v are invalid", invalidIndices)
-	}
-	return indices, nil
-}
--- a/beacon/fakebeacon/server.go
+++ b/beacon/fakebeacon/server.go
@ -1,97 +0,0 @@
-package fakebeacon
-
-import (
-	"net/http"
-	"strconv"
-
-	"github.com/ethereum/go-ethereum/internal/ethapi"
-	"github.com/gorilla/mux"
-	"github.com/prysmaticlabs/prysm/v5/api/server"
-)
-
-const (
-	DefaultAddr = "localhost"
-	DefaultPort = 8686
-)
-
-type Config struct {
-	Enable bool
-	Addr   string
-	Port   int
-}
-
-func defaultConfig() *Config {
-	return &Config{
-		Enable: false,
-		Addr:   DefaultAddr,
-		Port:   DefaultPort,
-	}
-}
-
-type Service struct {
-	cfg     *Config
-	router  *mux.Router
-	backend ethapi.Backend
-}
-
-func NewService(cfg *Config, backend ethapi.Backend) *Service {
-	cfgs := defaultConfig()
-	if cfg.Addr != "" {
-		cfgs.Addr = cfg.Addr
-	}
-	if cfg.Port > 0 {
-		cfgs.Port = cfg.Port
-	}
-
-	s := &Service{
-		cfg:     cfgs,
-		backend: backend,
-	}
-	router := s.newRouter()
-	s.router = router
-	return s
-}
-
-func (s *Service) Run() {
-	_ = http.ListenAndServe(s.cfg.Addr+":"+strconv.Itoa(s.cfg.Port), s.router)
-}
-
-func (s *Service) newRouter() *mux.Router {
-	r := mux.NewRouter()
-	r.Use(server.NormalizeQueryValuesHandler)
-	for _, e := range s.endpoints() {
-		r.HandleFunc(e.path, e.handler).Methods(e.methods...)
-	}
-	return r
-}
-
-type endpoint struct {
-	path    string
-	handler http.HandlerFunc
-	methods []string
-}
-
-func (s *Service) endpoints() []endpoint {
-	return []endpoint{
-		{
-			path:    versionMethod,
-			handler: VersionMethod,
-			methods: []string{http.MethodGet},
-		},
-		{
-			path:    specMethod,
-			handler: SpecMethod,
-			methods: []string{http.MethodGet},
-		},
-		{
-			path:    genesisMethod,
-			handler: GenesisMethod,
-			methods: []string{http.MethodGet},
-		},
-		{
-			path:    sidecarsMethodPrefix,
-			handler: s.SidecarsMethod,
-			methods: []string{http.MethodGet},
-		},
-	}
-}
--- a/beacon/fakebeacon/server_test.go
+++ b/beacon/fakebeacon/server_test.go
@ -1,90 +0,0 @@
-package fakebeacon
-
-import (
-	"context"
-	"fmt"
-	"strconv"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-//
-//func TestFetchBlockNumberByTime(t *testing.T) {
-//	blockNum, err := fetchBlockNumberByTime(context.Background(), 1724052941, client)
-//	assert.Nil(t, err)
-//	assert.Equal(t, uint64(41493946), blockNum)
-//
-//	blockNum, err = fetchBlockNumberByTime(context.Background(), 1734052941, client)
-//	assert.Equal(t, err, errors.New("time too large"))
-//
-//	blockNum, err = fetchBlockNumberByTime(context.Background(), 1600153618, client)
-//	assert.Nil(t, err)
-//	assert.Equal(t, uint64(493946), blockNum)
-//}
-//
-//func TestBeaconBlobSidecars(t *testing.T) {
-//	indexBlobHash := []IndexedBlobHash{
-//		{Hash: common.HexToHash("0x01231952ecbaede62f8d0398b656072c072db36982c9ef106fbbc39ce14f983c"), Index: 0},
-//		{Hash: common.HexToHash("0x012c21a8284d2d707bb5318e874d2e1b97a53d028e96abb702b284a2cbb0f79c"), Index: 1},
-//		{Hash: common.HexToHash("0x011196c8d02536ede0382aa6e9fdba6c460169c0711b5f97fcd701bd8997aee3"), Index: 2},
-//		{Hash: common.HexToHash("0x019c86b46b27401fb978fd175d1eb7dadf4976d6919501b0c5280d13a5bab57b"), Index: 3},
-//		{Hash: common.HexToHash("0x01e00db7ee99176b3fd50aab45b4fae953292334bbf013707aac58c455d98596"), Index: 4},
-//		{Hash: common.HexToHash("0x0117d23b68123d578a98b3e1aa029661e0abda821a98444c21992eb1e5b7208f"), Index: 5},
-//		//{Hash: common.HexToHash("0x01e00db7ee99176b3fd50aab45b4fae953292334bbf013707aac58c455d98596"), Index: 1},
-//	}
-//
-//	resp, err := beaconBlobSidecars(context.Background(), 1724055046, []int{0, 1, 2, 3, 4, 5}) // block: 41494647
-//	assert.Nil(t, err)
-//	assert.NotNil(t, resp)
-//	assert.NotEmpty(t, resp.Data)
-//	for i, sideCar := range resp.Data {
-//		assert.Equal(t, indexBlobHash[i].Index, sideCar.Index)
-//		assert.Equal(t, indexBlobHash[i].Hash, kZGToVersionedHash(sideCar.KZGCommitment))
-//	}
-//
-//	apiscs := make([]*BlobSidecar, 0, len(indexBlobHash))
-//	// filter and order by hashes
-//	for _, h := range indexBlobHash {
-//		for _, apisc := range resp.Data {
-//			if h.Index == int(apisc.Index) {
-//				apiscs = append(apiscs, apisc)
-//				break
-//			}
-//		}
-//	}
-//
-//	assert.Equal(t, len(apiscs), len(resp.Data))
-//	assert.Equal(t, len(apiscs), len(indexBlobHash))
-//}
-
-type TimeToSlotFn func(timestamp uint64) (uint64, error)
-
-// GetTimeToSlotFn returns a function that converts a timestamp to a slot number.
-func GetTimeToSlotFn(ctx context.Context) (TimeToSlotFn, error) {
-	genesis := beaconGenesis()
-	config := configSpec()
-
-	genesisTime, _ := strconv.ParseUint(genesis.Data.GenesisTime, 10, 64)
-	secondsPerSlot, _ := strconv.ParseUint(config.SecondsPerSlot, 10, 64)
-	if secondsPerSlot == 0 {
-		return nil, fmt.Errorf("got bad value for seconds per slot: %v", config.SecondsPerSlot)
-	}
-	timeToSlotFn := func(timestamp uint64) (uint64, error) {
-		if timestamp < genesisTime {
-			return 0, fmt.Errorf("provided timestamp (%v) precedes genesis time (%v)", timestamp, genesisTime)
-		}
-		return (timestamp - genesisTime) / secondsPerSlot, nil
-	}
-	return timeToSlotFn, nil
-}
-
-func TestAPI(t *testing.T) {
-	slotFn, err := GetTimeToSlotFn(context.Background())
-	assert.Nil(t, err)
-
-	expTx := uint64(123151345)
-	gotTx, err := slotFn(expTx)
-	assert.Nil(t, err)
-	assert.Equal(t, expTx, gotTx)
-}
--- a/beacon/fakebeacon/utils.go
+++ b/beacon/fakebeacon/utils.go
@ -1,65 +0,0 @@
-package fakebeacon
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"math/rand"
-	"time"
-
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/internal/ethapi"
-	"github.com/ethereum/go-ethereum/rpc"
-)
-
-func fetchBlockNumberByTime(ctx context.Context, ts int64, backend ethapi.Backend) (*types.Header, error) {
-	// calc the block number of the ts.
-	currentHeader := backend.CurrentHeader()
-	blockTime := int64(currentHeader.Time)
-	if ts > blockTime {
-		return nil, errors.New("time too large")
-	}
-	blockNum := currentHeader.Number.Uint64()
-	estimateEndNumber := int64(blockNum) - (blockTime-ts)/3
-	// find the end number
-	for {
-		header, err := backend.HeaderByNumber(ctx, rpc.BlockNumber(estimateEndNumber))
-		if err != nil {
-			time.Sleep(time.Duration(rand.Int()%180) * time.Millisecond)
-			continue
-		}
-		if header == nil {
-			estimateEndNumber -= 1
-			time.Sleep(time.Duration(rand.Int()%180) * time.Millisecond)
-			continue
-		}
-		headerTime := int64(header.Time)
-		if headerTime == ts {
-			return header, nil
-		}
-
-		// let the estimateEndNumber a little bigger than real value
-		if headerTime > ts+8 {
-			estimateEndNumber -= (headerTime - ts) / 3
-		} else if headerTime < ts {
-			estimateEndNumber += (ts-headerTime)/3 + 1
-		} else {
-			// search one by one
-			for headerTime >= ts {
-				header, err = backend.HeaderByNumber(ctx, rpc.BlockNumber(estimateEndNumber-1))
-				if err != nil {
-					time.Sleep(time.Duration(rand.Int()%180) * time.Millisecond)
-					continue
-				}
-				headerTime = int64(header.Time)
-				if headerTime == ts {
-					return header, nil
-				}
-				estimateEndNumber -= 1
-				if headerTime < ts { //found the real endNumber
-					return nil, fmt.Errorf("block not found by time %d", ts)
-				}
-			}
-		}
-	}
-}
--- a/beacon/types/light_sync.go
+++ b/beacon/types/light_sync.go
@ -25,24 +25,6 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 )

-// BootstrapData contains a sync committee where light sync can be started,
-// together with a proof through a beacon header and corresponding state.
-// Note: BootstrapData is fetched from a server based on a known checkpoint hash.
-type BootstrapData struct {
-	Header          Header
-	CommitteeRoot   common.Hash
-	Committee       *SerializedSyncCommittee `rlp:"-"`
-	CommitteeBranch merkle.Values
-}
-
-// Validate verifies the proof included in BootstrapData.
-func (c *BootstrapData) Validate() error {
-	if c.CommitteeRoot != c.Committee.Root() {
-		return errors.New("wrong committee root")
-	}
-	return merkle.VerifyProof(c.Header.StateRoot, params.StateIndexSyncCommittee, c.CommitteeBranch, merkle.Value(c.CommitteeRoot))
-}
-
 // LightClientUpdate is a proof of the next sync committee root based on a header
 // signed by the sync committee of the given period. Optionally, the update can
 // prove quasi-finality by the signed header referring to a previous, finalized
--- a/build/checksums.txt
+++ b/build/checksums.txt
@ -1,26 +1,21 @@
 # This file contains sha256 checksums of optional build dependencies.

-# version:spec-tests 2.1.0
-# https://github.com/ethereum/execution-spec-tests/releases
-# https://github.com/ethereum/execution-spec-tests/releases/download/v2.1.0/
-ca89c76851b0900bfcc3cbb9a26cbece1f3d7c64a3bed38723e914713290df6c  fixtures_develop.tar.gz
-
-# version:golang 1.21.6
+# version:golang 1.21.5
 # https://go.dev/dl/
-124926a62e45f78daabbaedb9c011d97633186a33c238ffc1e25320c02046248  go1.21.6.src.tar.gz
-31d6ecca09010ab351e51343a5af81d678902061fee871f912bdd5ef4d778850  go1.21.6.darwin-amd64.tar.gz
-0ff541fb37c38e5e5c5bcecc8f4f43c5ffd5e3a6c33a5d3e4003ded66fcfb331  go1.21.6.darwin-arm64.tar.gz
-a1d1a149b34bf0f53965a237682c6da1140acabb131bf0e597240e4a140b0e5e  go1.21.6.freebsd-386.tar.gz
-de59e1217e4398b1522eed8dddabab2fa1b97aecbdca3af08e34832b4f0e3f81  go1.21.6.freebsd-amd64.tar.gz
-05d09041b5a1193c14e4b2db3f7fcc649b236c567f5eb93305c537851b72dd95  go1.21.6.linux-386.tar.gz
-3f934f40ac360b9c01f616a9aa1796d227d8b0328bf64cb045c7b8c4ee9caea4  go1.21.6.linux-amd64.tar.gz
-e2e8aa88e1b5170a0d495d7d9c766af2b2b6c6925a8f8956d834ad6b4cacbd9a  go1.21.6.linux-arm64.tar.gz
-6a8eda6cc6a799ff25e74ce0c13fdc1a76c0983a0bb07c789a2a3454bf6ec9b2  go1.21.6.linux-armv6l.tar.gz
-e872b1e9a3f2f08fd4554615a32ca9123a4ba877ab6d19d36abc3424f86bc07f  go1.21.6.linux-ppc64le.tar.gz
-92894d0f732d3379bc414ffdd617eaadad47e1d72610e10d69a1156db03fc052  go1.21.6.linux-s390x.tar.gz
-65b38857135cf45c80e1d267e0ce4f80fe149326c68835217da4f2da9b7943fe  go1.21.6.windows-386.zip
-27ac9dd6e66fb3fd0acfa6792ff053c86e7d2c055b022f4b5d53bfddec9e3301  go1.21.6.windows-amd64.zip
-b93aff8f3c882c764c66a39b7a1483b0460e051e9992bf3435479129e5051bcd  go1.21.6.windows-arm64.zip
+285cbbdf4b6e6e62ed58f370f3f6d8c30825d6e56c5853c66d3c23bcdb09db19  go1.21.5.src.tar.gz
+a2e1d5743e896e5fe1e7d96479c0a769254aed18cf216cf8f4c3a2300a9b3923  go1.21.5.darwin-amd64.tar.gz
+d0f8ac0c4fb3efc223a833010901d02954e3923cfe2c9a2ff0e4254a777cc9cc  go1.21.5.darwin-arm64.tar.gz
+2c05bbe0dc62456b90b7ddd354a54f373b7c377a98f8b22f52ab694b4f6cca58  go1.21.5.freebsd-386.tar.gz
+30b6c64e9a77129605bc12f836422bf09eec577a8c899ee46130aeff81567003  go1.21.5.freebsd-amd64.tar.gz
+8f4dba9cf5c61757bbd7e9ebdb93b6a30a1b03f4a636a1ba0cc2f27b907ab8e1  go1.21.5.linux-386.tar.gz
+e2bc0b3e4b64111ec117295c088bde5f00eeed1567999ff77bc859d7df70078e  go1.21.5.linux-amd64.tar.gz
+841cced7ecda9b2014f139f5bab5ae31785f35399f236b8b3e75dff2a2978d96  go1.21.5.linux-arm64.tar.gz
+837f4bf4e22fcdf920ffeaa4abf3d02d1314e03725431065f4d44c46a01b42fe  go1.21.5.linux-armv6l.tar.gz
+907b8c6ec4be9b184952e5d3493be66b1746442394a8bc78556c56834cd7c38b  go1.21.5.linux-ppc64le.tar.gz
+9c4a81b72ebe44368813cd03684e1080a818bf915d84163abae2ed325a1b2dc0  go1.21.5.linux-s390x.tar.gz
+6da2418889dfb37763d0eb149c4a8d728c029e12f0cd54fbca0a31ae547e2d34  go1.21.5.windows-386.zip
+bbe603cde7c9dee658f45164b4d06de1eff6e6e6b800100824e7c00d56a9a92f  go1.21.5.windows-amd64.zip
+9b7acca50e674294e43202df4fbc26d5af4d8bc3170a3342a1514f09a2dab5e9  go1.21.5.windows-arm64.zip

 # version:golangci 1.55.2
 # https://github.com/golangci/golangci-lint/releases/
--- a/build/ci.go
+++ b/build/ci.go
@ -120,15 +120,15 @@ var (
 	// Distros for which packages are created.
 	// Note: vivid is unsupported because there is no golang-1.6 package for it.
 	// Note: the following Ubuntu releases have been officially deprecated on Launchpad:
-	//   wily, yakkety, zesty, artful, cosmic, disco, eoan, groovy, hirsuite, impish,
-	//   kinetic, lunar
+	//   wily, yakkety, zesty, artful, cosmic, disco, eoan, groovy, hirsuite, impish
 	debDistroGoBoots = map[string]string{
-		"trusty": "golang-1.11", // 14.04, EOL: 04/2024
-		"xenial": "golang-go",   // 16.04, EOL: 04/2026
-		"bionic": "golang-go",   // 18.04, EOL: 04/2028
-		"focal":  "golang-go",   // 20.04, EOL: 04/2030
-		"jammy":  "golang-go",   // 22.04, EOL: 04/2032
-		"mantic": "golang-go",   // 23.10, EOL: 07/2024
+		"trusty":  "golang-1.11", // EOL: 04/2024
+		"xenial":  "golang-go",   // EOL: 04/2026
+		"bionic":  "golang-go",   // EOL: 04/2028
+		"focal":   "golang-go",   // EOL: 04/2030
+		"jammy":   "golang-go",   // EOL: 04/2032
+		"kinetic": "golang-go",   // EOL: 07/2023
+		"lunar":   "golang-go",   // EOL: 01/2024
 	}

 	debGoBootPaths = map[string]string{
@ -136,8 +136,18 @@ var (
 		"golang-go":   "/usr/lib/go",
 	}

-	// This is where the tests should be unpacked.
-	executionSpecTestsDir = "tests/spec-tests"
+	// This is the version of Go that will be downloaded by
+	//
+	//     go run ci.go install -dlgo
+	dlgoVersion = "1.21.5"
+
+	// This is the version of Go that will be used to bootstrap the PPA builder.
+	//
+	// This version is fine to be old and full of security holes, we just use it
+	// to build the latest Go. Don't change it. If it ever becomes insufficient,
+	// we need to switch over to a recursive builder to jumpt across supported
+	// versions.
+	gobootVersion = "1.19.6"
 )

 var GOBIN, _ = filepath.Abs(filepath.Join("build", "bin"))
@ -175,8 +185,6 @@ func main() {
 		doWindowsInstaller(os.Args[2:])
 	case "purge":
 		doPurge(os.Args[2:])
-	case "sanitycheck":
-		doSanityCheck()
 	default:
 		log.Fatal("unknown command ", os.Args[1])
 	}
@ -199,8 +207,9 @@ func doInstall(cmdline []string) {
 	tc := build.GoToolchain{GOARCH: *arch, CC: *cc}
 	if *dlgo {
 		csdb := build.MustLoadChecksums("build/checksums.txt")
-		tc.Root = build.DownloadGo(csdb)
+		tc.Root = build.DownloadGo(csdb, dlgoVersion)
 	}
+
 	// Disable CLI markdown doc generation in release builds.
 	buildTags := []string{"urfave_cli_no_docs"}

@ -291,19 +300,14 @@ func doTest(cmdline []string) {
 		verbose  = flag.Bool("v", false, "Whether to log verbosely")
 		timeout  = flag.String("timeout", "10m", `Timeout of runing tests`)
 		race     = flag.Bool("race", false, "Execute the race detector")
-		short    = flag.Bool("short", false, "Pass the 'short'-flag to go test")
-		cachedir = flag.String("cachedir", "./build/cache", "directory for caching downloads")
 	)
 	flag.CommandLine.Parse(cmdline)

-	// Get test fixtures.
-	csdb := build.MustLoadChecksums("build/checksums.txt")
-	downloadSpecTestFixtures(csdb, *cachedir)
-
 	// Configure the toolchain.
 	tc := build.GoToolchain{GOARCH: *arch, CC: *cc}
 	if *dlgo {
-		tc.Root = build.DownloadGo(csdb)
+		csdb := build.MustLoadChecksums("build/checksums.txt")
+		tc.Root = build.DownloadGo(csdb, dlgoVersion)
 	}
 	gotest := tc.Go("test")

@ -313,9 +317,6 @@ func doTest(cmdline []string) {
 	// Enable CKZG backend in CI.
 	gotest.Args = append(gotest.Args, "-tags=ckzg")

-	// Enable integration-tests
-	gotest.Args = append(gotest.Args, "-tags=integrationtests")
-
 	// Test a single package at a time. CI builders are slow
 	// and some tests run into timeouts under load.
 	gotest.Args = append(gotest.Args, "-p", "1")
@ -331,9 +332,6 @@ func doTest(cmdline []string) {
 	if *race {
 		gotest.Args = append(gotest.Args, "-race")
 	}
-	if *short {
-		gotest.Args = append(gotest.Args, "-short")
-	}

 	packages := []string{"./..."}
 	if len(flag.CommandLine.Args()) > 0 {
@ -343,25 +341,6 @@ func doTest(cmdline []string) {
 	build.MustRun(gotest)
 }

-// downloadSpecTestFixtures downloads and extracts the execution-spec-tests fixtures.
-func downloadSpecTestFixtures(csdb *build.ChecksumDB, cachedir string) string {
-	executionSpecTestsVersion, err := build.Version(csdb, "spec-tests")
-	if err != nil {
-		log.Fatal(err)
-	}
-	ext := ".tar.gz"
-	base := "fixtures_develop" // TODO(MariusVanDerWijden) rename once the version becomes part of the filename
-	url := fmt.Sprintf("https://github.com/ethereum/execution-spec-tests/releases/download/v%s/%s%s", executionSpecTestsVersion, base, ext)
-	archivePath := filepath.Join(cachedir, base+ext)
-	if err := csdb.DownloadFile(url, archivePath); err != nil {
-		log.Fatal(err)
-	}
-	if err := build.ExtractArchive(archivePath, executionSpecTestsDir); err != nil {
-		log.Fatal(err)
-	}
-	return filepath.Join(cachedir, base)
-}
-
 // doLint runs golangci-lint on requested packages.
 func doLint(cmdline []string) {
 	var (
@ -375,17 +354,15 @@ func doLint(cmdline []string) {

 	linter := downloadLinter(*cachedir)
 	lflags := []string{"run", "--config", ".golangci.yml"}
-	build.MustRunCommandWithOutput(linter, append(lflags, packages...)...)
+	build.MustRunCommand(linter, append(lflags, packages...)...)
 	fmt.Println("You have achieved perfection.")
 }

 // downloadLinter downloads and unpacks golangci-lint.
 func downloadLinter(cachedir string) string {
+	const version = "1.55.2"
+
 	csdb := build.MustLoadChecksums("build/checksums.txt")
-	version, err := build.Version(csdb, "golangci")
-	if err != nil {
-		log.Fatal(err)
-	}
 	arch := runtime.GOARCH
 	ext := ".tar.gz"

@ -767,10 +744,6 @@ func doDebianSource(cmdline []string) {
 // to bootstrap the builder Go.
 func downloadGoBootstrapSources(cachedir string) string {
 	csdb := build.MustLoadChecksums("build/checksums.txt")
-	gobootVersion, err := build.Version(csdb, "ppa-builder")
-	if err != nil {
-		log.Fatal(err)
-	}
 	file := fmt.Sprintf("go%s.src.tar.gz", gobootVersion)
 	url := "https://dl.google.com/go/" + file
 	dst := filepath.Join(cachedir, file)
@ -783,10 +756,6 @@ func downloadGoBootstrapSources(cachedir string) string {
 // downloadGoSources downloads the Go source tarball.
 func downloadGoSources(cachedir string) string {
 	csdb := build.MustLoadChecksums("build/checksums.txt")
-	dlgoVersion, err := build.Version(csdb, "golang")
-	if err != nil {
-		log.Fatal(err)
-	}
 	file := fmt.Sprintf("go%s.src.tar.gz", dlgoVersion)
 	url := "https://dl.google.com/go/" + file
 	dst := filepath.Join(cachedir, file)
@ -1113,7 +1082,3 @@ func doPurge(cmdline []string) {
 		log.Fatal(err)
 	}
 }
-
-func doSanityCheck() {
-	build.DownloadAndVerifyChecksums(build.MustLoadChecksums("build/checksums.txt"))
-}
--- a/build/nsis.geth.nsi
+++ b/build/nsis.geth.nsi
@ -20,7 +20,7 @@
 # - NSIS Large Strings build, http://nsis.sourceforge.net/Special_Builds
 # - SFP, http://nsis.sourceforge.net/NSIS_Simple_Firewall_Plugin (put dll in NSIS\Plugins\x86-ansi)
 #
-# After installing NSIS extra the NSIS Large Strings build zip and replace the makensis.exe and the
+# After intalling NSIS extra the NSIS Large Strings build zip and replace the makensis.exe and the
 # files found in Stub.
 #
 # based on: http://nsis.sourceforge.net/A_simple_installer_with_start_menu_shortcut_and_uninstaller
--- a/build/update-license.go
+++ b/build/update-license.go
@ -65,8 +65,10 @@ var (
 		"vendor/", "tests/testdata/", "build/",

 		// don't relicense vendored sources
+		"cmd/internal/browser",
 		"common/bitutil/bitutil",
 		"common/prque/",
+		"consensus/ethash/xor.go",
 		"crypto/blake2b/",
 		"crypto/bn256/",
 		"crypto/bls12381/",
@ -76,7 +78,6 @@ var (
 		"log/",
 		"metrics/",
 		"signer/rules/deps",
-		"internal/reexec",

 		// skip special licenses
 		"crypto/secp256k1", // Relicensed to BSD-3 via https://github.com/ethereum/go-ethereum/pull/17225
--- a/cmd/abigen/main.go
+++ b/cmd/abigen/main.go
@ -232,7 +232,7 @@ func abigen(c *cli.Context) error {
 }

 func main() {
-	log.SetDefault(log.NewLogger(log.NewTerminalHandlerWithLevel(os.Stderr, log.LevelInfo, true)))
+	log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))

 	if err := app.Run(os.Args); err != nil {
 		fmt.Fprintln(os.Stderr, err)
--- a/cmd/abigen/namefilter_test.go
+++ b/cmd/abigen/namefilter_test.go
@ -8,7 +8,6 @@ import (
 )

 func TestNameFilter(t *testing.T) {
-	t.Parallel()
 	_, err := newNameFilter("Foo")
 	require.Error(t, err)
 	_, err = newNameFilter("too/many:colons:Foo")
--- a/cmd/bootnode/main.go
+++ b/cmd/bootnode/main.go
@ -54,11 +54,10 @@ func main() {
 	)
 	flag.Parse()

-	glogger := log.NewGlogHandler(log.NewTerminalHandler(os.Stderr, false))
-	slogVerbosity := log.FromLegacyLevel(*verbosity)
-	glogger.Verbosity(slogVerbosity)
+	glogger := log.NewGlogHandler(log.StreamHandler(os.Stderr, log.TerminalFormat(false)))
+	glogger.Verbosity(log.Lvl(*verbosity))
 	glogger.Vmodule(*vmodule)
-	log.SetDefault(log.NewLogger(glogger))
+	log.Root().SetHandler(glogger)

 	natm, err := nat.Parse(*natdesc)
 	if err != nil {
--- a/cmd/clef/README.md
+++ b/cmd/clef/README.md
@ -2,7 +2,7 @@

 Clef can be used to sign transactions and data and is meant as a(n eventual) replacement for Geth's account management. This allows DApps to not depend on Geth's account management. When a DApp wants to sign data (or a transaction), it can send the content to Clef, which will then provide the user with context and asks for permission to sign the content. If the users grants the signing request, Clef will send the signature back to the DApp.

-This setup allows a DApp to connect to a remote Ethereum node and send transactions that are locally signed. This can help in situations when a DApp is connected to an untrusted remote Ethereum node, because a local one is not available, not synchronized with the chain, or is a node that has no built-in (or limited) account management.
+This setup allows a DApp to connect to a remote Ethereum node and send transactions that are locally signed. This can help in situations when a DApp is connected to an untrusted remote Ethereum node, because a local one is not available, not synchronised with the chain, or is a node that has no built-in (or limited) account management.

 Clef can run as a daemon on the same machine, off a usb-stick like [USB armory](https://inversepath.com/usbarmory), or even a separate VM in a [QubesOS](https://www.qubes-os.org/) type setup.

@ -916,7 +916,7 @@ There are a couple of implementation for a UI. We'll try to keep this list up to

 | Name | Repo | UI type| No external resources| Blocky support| Verifies permissions | Hash information | No secondary storage | Statically linked| Can modify parameters|
 | ---- | ---- | -------| ---- | ---- | ---- |---- | ---- | ---- | ---- |
-| QtSigner| https://github.com/holiman/qtsigner/ | Python3/QT-based| :+1:| :+1:| :+1:| :+1:| :+1:| :x: |  :+1: (partially)|
-| GtkSigner| https://github.com/holiman/gtksigner | Python3/GTK-based| :+1:| :x:| :x:| :+1:| :+1:| :x: |  :x: |
-| Frame | https://github.com/floating/frame/commits/go-signer | Electron-based| :x:| :x:| :x:| :x:| ?| :x: |  :x: |
-| Clef UI| https://github.com/ethereum/clef-ui | Golang/QT-based| :+1:| :+1:| :x:| :+1:| :+1:| :x: |  :+1: (approve tx only)|
+| QtSigner| https://github.com/holiman/qtsigner/| Python3/QT-based| :+1:| :+1:| :+1:| :+1:| :+1:| :x: |  :+1: (partially)|
+| GtkSigner| https://github.com/holiman/gtksigner| Python3/GTK-based| :+1:| :x:| :x:| :+1:| :+1:| :x: |  :x: |
+| Frame | https://github.com/floating/frame/commits/go-signer| Electron-based| :x:| :x:| :x:| :x:| ?| :x: |  :x: |
+| Clef UI| https://github.com/ethereum/clef-ui| Golang/QT-based| :+1:| :+1:| :x:| :+1:| :+1:| :x: |  :+1: (approve tx only)|
--- a/cmd/clef/consolecmd_test.go
+++ b/cmd/clef/consolecmd_test.go
@ -26,13 +26,12 @@ import (

 // TestImportRaw tests clef --importraw
 func TestImportRaw(t *testing.T) {
-	t.Parallel()
 	keyPath := filepath.Join(os.TempDir(), fmt.Sprintf("%v-tempkey.test", t.Name()))
 	os.WriteFile(keyPath, []byte("0102030405060708090a0102030405060708090a0102030405060708090a0102"), 0777)
 	t.Cleanup(func() { os.Remove(keyPath) })

+	t.Parallel()
 	t.Run("happy-path", func(t *testing.T) {
-		t.Parallel()
 		// Run clef importraw
 		clef := runClef(t, "--suppress-bootwarn", "--lightkdf", "importraw", keyPath)
 		clef.input("myverylongpassword").input("myverylongpassword")
@ -44,7 +43,6 @@ func TestImportRaw(t *testing.T) {
 	})
 	// tests clef --importraw with mismatched passwords.
 	t.Run("pw-mismatch", func(t *testing.T) {
-		t.Parallel()
 		// Run clef importraw
 		clef := runClef(t, "--suppress-bootwarn", "--lightkdf", "importraw", keyPath)
 		clef.input("myverylongpassword1").input("myverylongpassword2").WaitExit()
@ -54,7 +52,6 @@ func TestImportRaw(t *testing.T) {
 	})
 	// tests clef --importraw with a too short password.
 	t.Run("short-pw", func(t *testing.T) {
-		t.Parallel()
 		// Run clef importraw
 		clef := runClef(t, "--suppress-bootwarn", "--lightkdf", "importraw", keyPath)
 		clef.input("shorty").input("shorty").WaitExit()
@ -67,13 +64,12 @@ func TestImportRaw(t *testing.T) {

 // TestListAccounts tests clef --list-accounts
 func TestListAccounts(t *testing.T) {
-	t.Parallel()
 	keyPath := filepath.Join(os.TempDir(), fmt.Sprintf("%v-tempkey.test", t.Name()))
 	os.WriteFile(keyPath, []byte("0102030405060708090a0102030405060708090a0102030405060708090a0102"), 0777)
 	t.Cleanup(func() { os.Remove(keyPath) })

+	t.Parallel()
 	t.Run("no-accounts", func(t *testing.T) {
-		t.Parallel()
 		clef := runClef(t, "--suppress-bootwarn", "--lightkdf", "list-accounts")
 		if out := string(clef.Output()); !strings.Contains(out, "The keystore is empty.") {
 			t.Logf("Output\n%v", out)
@ -81,7 +77,6 @@ func TestListAccounts(t *testing.T) {
 		}
 	})
 	t.Run("one-account", func(t *testing.T) {
-		t.Parallel()
 		// First, we need to import
 		clef := runClef(t, "--suppress-bootwarn", "--lightkdf", "importraw", keyPath)
 		clef.input("myverylongpassword").input("myverylongpassword").WaitExit()
@ -96,13 +91,12 @@ func TestListAccounts(t *testing.T) {

 // TestListWallets tests clef --list-wallets
 func TestListWallets(t *testing.T) {
-	t.Parallel()
 	keyPath := filepath.Join(os.TempDir(), fmt.Sprintf("%v-tempkey.test", t.Name()))
 	os.WriteFile(keyPath, []byte("0102030405060708090a0102030405060708090a0102030405060708090a0102"), 0777)
 	t.Cleanup(func() { os.Remove(keyPath) })

+	t.Parallel()
 	t.Run("no-accounts", func(t *testing.T) {
-		t.Parallel()
 		clef := runClef(t, "--suppress-bootwarn", "--lightkdf", "list-wallets")
 		if out := string(clef.Output()); !strings.Contains(out, "There are no wallets.") {
 			t.Logf("Output\n%v", out)
@ -110,7 +104,6 @@ func TestListWallets(t *testing.T) {
 		}
 	})
 	t.Run("one-account", func(t *testing.T) {
-		t.Parallel()
 		// First, we need to import
 		clef := runClef(t, "--suppress-bootwarn", "--lightkdf", "importraw", keyPath)
 		clef.input("myverylongpassword").input("myverylongpassword").WaitExit()
--- a/cmd/clef/datatypes.md
+++ b/cmd/clef/datatypes.md
@ -75,7 +75,7 @@ Example:
    },
    {
      "type": "Info",
-      "message": "User should see this as well"
+      "message": "User should see this aswell"
    }
  ],
  "meta": {
--- a/cmd/clef/main.go
+++ b/cmd/clef/main.go
@ -492,8 +492,7 @@ func initialize(c *cli.Context) error {
 	if usecolor {
 		output = colorable.NewColorable(logOutput)
 	}
-	verbosity := log.FromLegacyLevel(c.Int(logLevelFlag.Name))
-	log.SetDefault(log.NewLogger(log.NewTerminalHandlerWithLevel(output, verbosity, usecolor)))
+	log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(c.Int(logLevelFlag.Name)), log.StreamHandler(output, log.TerminalFormat(usecolor))))

 	return nil
 }
@ -582,7 +581,6 @@ func accountImport(c *cli.Context) error {
 		return err
 	}
 	if first != second {
-		//lint:ignore ST1005 This is a message for the user
 		return errors.New("Passwords do not match")
 	}
 	acc, err := internalApi.ImportRawKey(hex.EncodeToString(crypto.FromECDSA(pKey)), first)
@ -704,7 +702,6 @@ func signer(c *cli.Context) error {
 	log.Info("Starting signer", "chainid", chainId, "keystore", ksLoc,
 		"light-kdf", lightKdf, "advanced", advanced)
 	am := core.StartClefAccountManager(ksLoc, nousb, lightKdf, scpath)
-	defer am.Close()
 	apiImpl := core.NewSignerAPI(am, chainId, nousb, ui, db, advanced, pwStorage)

 	// Establish the bidirectional communication, by creating a new UI backend and registering
--- a/cmd/clef/pythonsigner.py
+++ b/cmd/clef/pythonsigner.py
@ -91,7 +91,7 @@ class StdIOHandler:
        {"jsonrpc":"2.0","id":20,"method":"ui_approveTx","params":[{"transaction":{"from":"0xDEADbEeF000000000000000000000000DeaDbeEf","to":"0xDEADbEeF000000000000000000000000DeaDbeEf","gas":"0x3e8","gasPrice":"0x5","maxFeePerGas":null,"maxPriorityFeePerGas":null,"value":"0x6","nonce":"0x1","data":"0x"},"call_info":null,"meta":{"remote":"clef binary","local":"main","scheme":"in-proc","User-Agent":"","Origin":""}}]}

        :param transaction: transaction info
-        :param call_info: info about the call, e.g. if ABI info could not be
+        :param call_info: info abou the call, e.g. if ABI info could not be
        :param meta: metadata about the request, e.g. where the call comes from
        :return:
        """  # noqa: E501
--- a/cmd/clef/run_test.go
+++ b/cmd/clef/run_test.go
@ -21,8 +21,8 @@ import (
 	"os"
 	"testing"

+	"github.com/docker/docker/pkg/reexec"
 	"github.com/ethereum/go-ethereum/internal/cmdtest"
-	"github.com/ethereum/go-ethereum/internal/reexec"
 )

 const registeredName = "clef-test"
--- a/cmd/devp2p/README.md
+++ b/cmd/devp2p/README.md
@ -108,32 +108,31 @@ Start the test by running `devp2p discv5 test -listen1 127.0.0.1 -listen2 127.0.

 The Eth Protocol test suite is a conformance test suite for the [eth protocol][eth].

-To run the eth protocol test suite against your implementation, the node needs to be initialized
-with our test chain. The chain files are located in `./cmd/devp2p/internal/ethtest/testdata`.
+To run the eth protocol test suite against your implementation, the node needs to be initialized as such:

-1. initialize the geth node with the `genesis.json` file
-2. import blocks from `chain.rlp`
-3. run the client using the resulting database. For geth, use a command like the one below:
+1. initialize the geth node with the `genesis.json` file contained in the `testdata` directory
+2. import the `halfchain.rlp` file in the `testdata` directory
+3. run geth with the following flags:
+```
+geth --datadir <datadir> --nodiscover --nat=none --networkid 19763 --verbosity 5
+```

-    geth \
-        --datadir <datadir>            \
-        --nodiscover                   \
-        --nat=none                     \
-        --networkid 3503995874084926   \
-        --verbosity 5                  \
-        --authrpc.jwtsecret 0x7365637265747365637265747365637265747365637265747365637265747365
-
-Note that the tests also require access to the engine API.
-The test suite can now be executed using the devp2p tool.
-
-    devp2p rlpx eth-test \
-        --chain internal/ethtest/testdata   \
-        --node enode://....                 \
-        --engineapi http://127.0.0.1:8551   \
-        --jwtsecret 0x7365637265747365637265747365637265747365637265747365637265747365
+Then, run the following command, replacing `<enode>` with the enode of the geth node:
+ ```
+ devp2p rlpx eth-test <enode> cmd/devp2p/internal/ethtest/testdata/chain.rlp cmd/devp2p/internal/ethtest/testdata/genesis.json
+```

 Repeat the above process (re-initialising the node) in order to run the Eth Protocol test suite again.

+#### Eth66 Test Suite
+
+The Eth66 test suite is also a conformance test suite for the eth 66 protocol version specifically.
+To run the eth66 protocol test suite, initialize a geth node as described above and run the following command,
+replacing `<enode>` with the enode of the geth node:
+
+ ```
+ devp2p rlpx eth66-test <enode> cmd/devp2p/internal/ethtest/testdata/chain.rlp cmd/devp2p/internal/ethtest/testdata/genesis.json
+```

 [eth]: https://github.com/ethereum/devp2p/blob/master/caps/eth.md
 [dns-tutorial]: https://geth.ethereum.org/docs/developers/geth-developer/dns-discovery-setup
--- a/cmd/devp2p/crawl.go
+++ b/cmd/devp2p/crawl.go
@ -17,7 +17,6 @@
 package main

 import (
-	"errors"
 	"sync"
 	"sync/atomic"
 	"time"
@ -52,14 +51,7 @@ type resolver interface {
 	RequestENR(*enode.Node) (*enode.Node, error)
 }

-func newCrawler(input nodeSet, bootnodes []*enode.Node, disc resolver, iters ...enode.Iterator) (*crawler, error) {
-	if len(input) == 0 {
-		input.add(bootnodes...)
-	}
-	if len(input) == 0 {
-		return nil, errors.New("no input nodes to start crawling")
-	}
-
+func newCrawler(input nodeSet, disc resolver, iters ...enode.Iterator) *crawler {
 	c := &crawler{
 		input:     input,
 		output:    make(nodeSet, len(input)),
@ -75,7 +67,7 @@ func newCrawler(input nodeSet, bootnodes []*enode.Node, disc resolver, iters ...
 	for id, n := range input {
 		c.output[id] = n
 	}
-	return c, nil
+	return c
 }

 func (c *crawler) run(timeout time.Duration, nthreads int) nodeSet {
--- a/cmd/devp2p/discv4cmd.go
+++ b/cmd/devp2p/discv4cmd.go
@ -143,7 +143,7 @@ var discoveryNodeFlags = []cli.Flag{

 func discv4Ping(ctx *cli.Context) error {
 	n := getNodeArg(ctx)
-	disc, _ := startV4(ctx)
+	disc := startV4(ctx)
 	defer disc.Close()

 	start := time.Now()
@ -156,7 +156,7 @@ func discv4Ping(ctx *cli.Context) error {

 func discv4RequestRecord(ctx *cli.Context) error {
 	n := getNodeArg(ctx)
-	disc, _ := startV4(ctx)
+	disc := startV4(ctx)
 	defer disc.Close()

 	respN, err := disc.RequestENR(n)
@ -169,7 +169,7 @@ func discv4RequestRecord(ctx *cli.Context) error {

 func discv4Resolve(ctx *cli.Context) error {
 	n := getNodeArg(ctx)
-	disc, _ := startV4(ctx)
+	disc := startV4(ctx)
 	defer disc.Close()

 	fmt.Println(disc.Resolve(n).String())
@ -196,13 +196,10 @@ func discv4ResolveJSON(ctx *cli.Context) error {
 		nodeargs = append(nodeargs, n)
 	}

-	disc, config := startV4(ctx)
+	// Run the crawler.
+	disc := startV4(ctx)
 	defer disc.Close()
-
-	c, err := newCrawler(inputSet, config.Bootnodes, disc, enode.IterNodes(nodeargs))
-	if err != nil {
-		return err
-	}
+	c := newCrawler(inputSet, disc, enode.IterNodes(nodeargs))
 	c.revalidateInterval = 0
 	output := c.run(0, 1)
 	writeNodesJSON(nodesFile, output)
@ -214,18 +211,14 @@ func discv4Crawl(ctx *cli.Context) error {
 		return errors.New("need nodes file as argument")
 	}
 	nodesFile := ctx.Args().First()
-	inputSet := make(nodeSet)
+	var inputSet nodeSet
 	if common.FileExist(nodesFile) {
 		inputSet = loadNodesJSON(nodesFile)
 	}

-	disc, config := startV4(ctx)
+	disc := startV4(ctx)
 	defer disc.Close()
-
-	c, err := newCrawler(inputSet, config.Bootnodes, disc, disc.RandomNodes())
-	if err != nil {
-		return err
-	}
+	c := newCrawler(inputSet, disc, disc.RandomNodes())
 	c.revalidateInterval = 10 * time.Minute
 	output := c.run(ctx.Duration(crawlTimeoutFlag.Name), ctx.Int(crawlParallelismFlag.Name))
 	writeNodesJSON(nodesFile, output)
@ -236,7 +229,7 @@ func discv4Crawl(ctx *cli.Context) error {
 func discv4Test(ctx *cli.Context) error {
 	// Configure test package globals.
 	if !ctx.IsSet(remoteEnodeFlag.Name) {
-		return fmt.Errorf("missing -%v", remoteEnodeFlag.Name)
+		return fmt.Errorf("Missing -%v", remoteEnodeFlag.Name)
 	}
 	v4test.Remote = ctx.String(remoteEnodeFlag.Name)
 	v4test.Listen1 = ctx.String(testListen1Flag.Name)
@ -245,14 +238,14 @@ func discv4Test(ctx *cli.Context) error {
 }

 // startV4 starts an ephemeral discovery V4 node.
-func startV4(ctx *cli.Context) (*discover.UDPv4, discover.Config) {
+func startV4(ctx *cli.Context) *discover.UDPv4 {
 	ln, config := makeDiscoveryConfig(ctx)
 	socket := listen(ctx, ln)
 	disc, err := discover.ListenV4(socket, ln, config)
 	if err != nil {
 		exit(err)
 	}
-	return disc, config
+	return disc
 }

 func makeDiscoveryConfig(ctx *cli.Context) (*enode.LocalNode, discover.Config) {
--- a/cmd/devp2p/discv5cmd.go
+++ b/cmd/devp2p/discv5cmd.go
@ -81,7 +81,7 @@ var (

 func discv5Ping(ctx *cli.Context) error {
 	n := getNodeArg(ctx)
-	disc, _ := startV5(ctx)
+	disc := startV5(ctx)
 	defer disc.Close()

 	fmt.Println(disc.Ping(n))
@ -90,7 +90,7 @@ func discv5Ping(ctx *cli.Context) error {

 func discv5Resolve(ctx *cli.Context) error {
 	n := getNodeArg(ctx)
-	disc, _ := startV5(ctx)
+	disc := startV5(ctx)
 	defer disc.Close()

 	fmt.Println(disc.Resolve(n))
@ -102,18 +102,14 @@ func discv5Crawl(ctx *cli.Context) error {
 		return errors.New("need nodes file as argument")
 	}
 	nodesFile := ctx.Args().First()
-	inputSet := make(nodeSet)
+	var inputSet nodeSet
 	if common.FileExist(nodesFile) {
 		inputSet = loadNodesJSON(nodesFile)
 	}

-	disc, config := startV5(ctx)
+	disc := startV5(ctx)
 	defer disc.Close()
-
-	c, err := newCrawler(inputSet, config.Bootnodes, disc, disc.RandomNodes())
-	if err != nil {
-		return err
-	}
+	c := newCrawler(inputSet, disc, disc.RandomNodes())
 	c.revalidateInterval = 10 * time.Minute
 	output := c.run(ctx.Duration(crawlTimeoutFlag.Name), ctx.Int(crawlParallelismFlag.Name))
 	writeNodesJSON(nodesFile, output)
@ -131,7 +127,7 @@ func discv5Test(ctx *cli.Context) error {
 }

 func discv5Listen(ctx *cli.Context) error {
-	disc, _ := startV5(ctx)
+	disc := startV5(ctx)
 	defer disc.Close()

 	fmt.Println(disc.Self())
@ -139,12 +135,12 @@ func discv5Listen(ctx *cli.Context) error {
 }

 // startV5 starts an ephemeral discovery v5 node.
-func startV5(ctx *cli.Context) (*discover.UDPv5, discover.Config) {
+func startV5(ctx *cli.Context) *discover.UDPv5 {
 	ln, config := makeDiscoveryConfig(ctx)
 	socket := listen(ctx, ln)
 	disc, err := discover.ListenV5(socket, ln, config)
 	if err != nil {
 		exit(err)
 	}
-	return disc, config
+	return disc
 }
--- a/cmd/devp2p/dns_cloudflare.go
+++ b/cmd/devp2p/dns_cloudflare.go
@ -114,7 +114,7 @@ func (c *cloudflareClient) uploadRecords(name string, records map[string]string)
 	records = lrecords

 	log.Info(fmt.Sprintf("Retrieving existing TXT records on %s", name))
-	entries, _, err := c.ListDNSRecords(context.Background(), cloudflare.ZoneIdentifier(c.zoneID), cloudflare.ListDNSRecordsParams{Type: "TXT"})
+	entries, err := c.DNSRecords(context.Background(), c.zoneID, cloudflare.DNSRecord{Type: "TXT"})
 	if err != nil {
 		return err
 	}
@ -141,25 +141,14 @@ func (c *cloudflareClient) uploadRecords(name string, records map[string]string)
 			if path != name {
 				ttl = treeNodeTTLCloudflare // Max TTL permitted by Cloudflare
 			}
-			record := cloudflare.CreateDNSRecordParams{Type: "TXT", Name: path, Content: val, TTL: ttl}
-			_, err = c.CreateDNSRecord(context.Background(), cloudflare.ZoneIdentifier(c.zoneID), record)
+			record := cloudflare.DNSRecord{Type: "TXT", Name: path, Content: val, TTL: ttl}
+			_, err = c.CreateDNSRecord(context.Background(), c.zoneID, record)
 		} else if old.Content != val {
 			// Entry already exists, only change its content.
 			log.Info(fmt.Sprintf("Updating %s from %q to %q", path, old.Content, val))
 			updated++
-
-			record := cloudflare.UpdateDNSRecordParams{
-				Type:     old.Type,
-				Name:     old.Name,
-				Content:  val,
-				Data:     old.Data,
-				ID:       old.ID,
-				Priority: old.Priority,
-				TTL:      old.TTL,
-				Proxied:  old.Proxied,
-				Tags:     old.Tags,
-			}
-			_, err = c.UpdateDNSRecord(context.Background(), cloudflare.ZoneIdentifier(c.zoneID), record)
+			old.Content = val
+			err = c.UpdateDNSRecord(context.Background(), c.zoneID, old.ID, old)
 		} else {
 			skipped++
 			log.Debug(fmt.Sprintf("Skipping %s = %q", path, val))
@ -179,7 +168,7 @@ func (c *cloudflareClient) uploadRecords(name string, records map[string]string)
 		// Stale entry, nuke it.
 		log.Debug(fmt.Sprintf("Deleting %s = %q", path, entry.Content))
 		deleted++
-		if err := c.DeleteDNSRecord(context.Background(), cloudflare.ZoneIdentifier(c.zoneID), entry.ID); err != nil {
+		if err := c.DeleteDNSRecord(context.Background(), c.zoneID, entry.ID); err != nil {
 			return fmt.Errorf("failed to delete %s: %v", path, err)
 		}
 	}
--- a/cmd/devp2p/dns_route53_test.go
+++ b/cmd/devp2p/dns_route53_test.go
@ -26,7 +26,6 @@ import (
 // This test checks that computeChanges/splitChanges create DNS changes in
 // leaf-added -> root-changed -> leaf-deleted order.
 func TestRoute53ChangeSort(t *testing.T) {
-	t.Parallel()
 	testTree0 := map[string]recordSet{
 		"2kfjogvxdqtxxugbh7gs7naaai.n": {ttl: 3333, values: []string{
 			`"enr:-HW4QO1ml1DdXLeZLsUxewnthhUy8eROqkDyoMTyavfks9JlYQIlMFEUoM78PovJDPQrAkrb3LRJ-""vtrymDguKCOIAWAgmlkgnY0iXNlY3AyNTZrMaEDffaGfJzgGhUif1JqFruZlYmA31HzathLSWxfbq_QoQ4"`,
@ -165,7 +164,6 @@ func TestRoute53ChangeSort(t *testing.T) {

 // This test checks that computeChanges compares the quoted value of the records correctly.
 func TestRoute53NoChange(t *testing.T) {
-	t.Parallel()
 	// Existing record set.
 	testTree0 := map[string]recordSet{
 		"n": {ttl: rootTTL, values: []string{
--- a/cmd/devp2p/internal/ethtest/chain.go
+++ b/cmd/devp2p/internal/ethtest/chain.go
@ -17,118 +17,27 @@
 package ethtest

 import (
-	"bytes"
 	"compress/gzip"
-	"crypto/ecdsa"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"math/big"
 	"os"
-	"path"
-	"sort"
 	"strings"

 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/forkid"
-	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/eth/protocols/eth"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
-	"golang.org/x/exp/slices"
 )

-// Chain is a lightweight blockchain-like store which can read a hivechain
-// created chain.
 type Chain struct {
-	genesis core.Genesis
-	blocks  []*types.Block
-	state   map[common.Address]state.DumpAccount // state of head block
-	senders map[common.Address]*senderInfo
-	config  *params.ChainConfig
-}
-
-// NewChain takes the given chain.rlp file, and decodes and returns
-// the blocks from the file.
-func NewChain(dir string) (*Chain, error) {
-	gen, err := loadGenesis(path.Join(dir, "genesis.json"))
-	if err != nil {
-		return nil, err
-	}
-	gblock := gen.ToBlock()
-
-	blocks, err := blocksFromFile(path.Join(dir, "chain.rlp"), gblock)
-	if err != nil {
-		return nil, err
-	}
-	state, err := readState(path.Join(dir, "headstate.json"))
-	if err != nil {
-		return nil, err
-	}
-	accounts, err := readAccounts(path.Join(dir, "accounts.json"))
-	if err != nil {
-		return nil, err
-	}
-	return &Chain{
-		genesis: gen,
-		blocks:  blocks,
-		state:   state,
-		senders: accounts,
-		config:  gen.Config,
-	}, nil
-}
-
-// senderInfo is an account record as output in the "accounts.json" file from
-// hivechain.
-type senderInfo struct {
-	Key   *ecdsa.PrivateKey `json:"key"`
-	Nonce uint64            `json:"nonce"`
-}
-
-// Head returns the chain head.
-func (c *Chain) Head() *types.Block {
-	return c.blocks[c.Len()-1]
-}
-
-// AccountsInHashOrder returns all accounts of the head state, ordered by hash of address.
-func (c *Chain) AccountsInHashOrder() []state.DumpAccount {
-	list := make([]state.DumpAccount, len(c.state))
-	i := 0
-	for addr, acc := range c.state {
-		addr := addr
-		list[i] = acc
-		list[i].Address = &addr
-		if len(acc.AddressHash) != 32 {
-			panic(fmt.Errorf("missing/invalid SecureKey in dump account %v", addr))
-		}
-		i++
-	}
-	slices.SortFunc(list, func(x, y state.DumpAccount) int {
-		return bytes.Compare(x.AddressHash, y.AddressHash)
-	})
-	return list
-}
-
-// CodeHashes returns all bytecode hashes contained in the head state.
-func (c *Chain) CodeHashes() []common.Hash {
-	var hashes []common.Hash
-	seen := make(map[common.Hash]struct{})
-	seen[types.EmptyCodeHash] = struct{}{}
-	for _, acc := range c.state {
-		h := common.BytesToHash(acc.CodeHash)
-		if _, ok := seen[h]; ok {
-			continue
-		}
-		hashes = append(hashes, h)
-		seen[h] = struct{}{}
-	}
-	slices.SortFunc(hashes, (common.Hash).Cmp)
-	return hashes
+	genesis     core.Genesis
+	blocks      []*types.Block
+	chainConfig *params.ChainConfig
 }

 // Len returns the length of the chain.
@ -136,11 +45,6 @@ func (c *Chain) Len() int {
 	return len(c.blocks)
 }

-// ForkID gets the fork id of the chain.
-func (c *Chain) ForkID() forkid.ID {
-	return forkid.NewID(c.config, c.blocks[0], uint64(c.Len()), c.blocks[c.Len()-1].Time())
-}
-
 // TD calculates the total difficulty of the chain at the
 // chain head.
 func (c *Chain) TD() *big.Int {
@ -151,12 +55,19 @@ func (c *Chain) TD() *big.Int {
 	return sum
 }

-// GetBlock returns the block at the specified number.
-func (c *Chain) GetBlock(number int) *types.Block {
-	return c.blocks[number]
+// TotalDifficultyAt calculates the total difficulty of the chain
+// at the given block height.
+func (c *Chain) TotalDifficultyAt(height int) *big.Int {
+	sum := new(big.Int)
+	if height >= c.Len() {
+		return sum
+	}
+	for _, block := range c.blocks[:height+1] {
+		sum.Add(sum, block.Difficulty())
+	}
+	return sum
 }

-// RootAt returns the state root for the block at the given height.
 func (c *Chain) RootAt(height int) common.Hash {
 	if height < c.Len() {
 		return c.blocks[height].Root()
@ -164,56 +75,37 @@ func (c *Chain) RootAt(height int) common.Hash {
 	return common.Hash{}
 }

-// GetSender returns the address associated with account at the index in the
-// pre-funded accounts list.
-func (c *Chain) GetSender(idx int) (common.Address, uint64) {
-	var accounts Addresses
-	for addr := range c.senders {
-		accounts = append(accounts, addr)
-	}
-	sort.Sort(accounts)
-	addr := accounts[idx]
-	return addr, c.senders[addr].Nonce
+// ForkID gets the fork id of the chain.
+func (c *Chain) ForkID() forkid.ID {
+	return forkid.NewID(c.chainConfig, c.blocks[0].Hash(), uint64(c.Len()), c.blocks[0].Time())
 }

-// IncNonce increases the specified signing account's pending nonce.
-func (c *Chain) IncNonce(addr common.Address, amt uint64) {
-	if _, ok := c.senders[addr]; !ok {
-		panic("nonce increment for non-signer")
+// Shorten returns a copy chain of a desired height from the imported
+func (c *Chain) Shorten(height int) *Chain {
+	blocks := make([]*types.Block, height)
+	copy(blocks, c.blocks[:height])
+
+	config := *c.chainConfig
+	return &Chain{
+		blocks:      blocks,
+		chainConfig: &config,
 	}
-	c.senders[addr].Nonce += amt
 }

-// Balance returns the balance of an account at the head of the chain.
-func (c *Chain) Balance(addr common.Address) *big.Int {
-	bal := new(big.Int)
-	if acc, ok := c.state[addr]; ok {
-		bal, _ = bal.SetString(acc.Balance, 10)
-	}
-	return bal
+// Head returns the chain head.
+func (c *Chain) Head() *types.Block {
+	return c.blocks[c.Len()-1]
 }

-// SignTx signs a transaction for the specified from account, so long as that
-// account was in the hivechain accounts dump.
-func (c *Chain) SignTx(from common.Address, tx *types.Transaction) (*types.Transaction, error) {
-	signer := types.LatestSigner(c.config)
-	acc, ok := c.senders[from]
-	if !ok {
-		return nil, fmt.Errorf("account not available for signing: %s", from)
-	}
-	return types.SignTx(tx, signer, acc.Key)
-}
-
-// GetHeaders returns the headers base on an ethGetPacketHeadersPacket.
-func (c *Chain) GetHeaders(req *eth.GetBlockHeadersPacket) ([]*types.Header, error) {
+func (c *Chain) GetHeaders(req *GetBlockHeaders) ([]*types.Header, error) {
 	if req.Amount < 1 {
 		return nil, errors.New("no block headers requested")
 	}
-	var (
-		headers     = make([]*types.Header, req.Amount)
-		blockNumber uint64
-	)
-	// Range over blocks to check if our chain has the requested header.
+
+	headers := make([]*types.Header, req.Amount)
+	var blockNumber uint64
+
+	// range over blocks to check if our chain has the requested header
 	for _, block := range c.blocks {
 		if block.Hash() == req.Origin.Hash || block.Number().Uint64() == req.Origin.Number {
 			headers[0] = block.Header()
@ -223,30 +115,40 @@ func (c *Chain) GetHeaders(req *eth.GetBlockHeadersPacket) ([]*types.Header, err
 	if headers[0] == nil {
 		return nil, fmt.Errorf("no headers found for given origin number %v, hash %v", req.Origin.Number, req.Origin.Hash)
 	}
+
 	if req.Reverse {
 		for i := 1; i < int(req.Amount); i++ {
 			blockNumber -= (1 - req.Skip)
 			headers[i] = c.blocks[blockNumber].Header()
 		}
+
 		return headers, nil
 	}
+
 	for i := 1; i < int(req.Amount); i++ {
 		blockNumber += (1 + req.Skip)
 		headers[i] = c.blocks[blockNumber].Header()
 	}
+
 	return headers, nil
 }

-// Shorten returns a copy chain of a desired height from the imported
-func (c *Chain) Shorten(height int) *Chain {
-	blocks := make([]*types.Block, height)
-	copy(blocks, c.blocks[:height])
-
-	config := *c.config
-	return &Chain{
-		blocks: blocks,
-		config: &config,
+// loadChain takes the given chain.rlp file, and decodes and returns
+// the blocks from the file.
+func loadChain(chainfile string, genesis string) (*Chain, error) {
+	gen, err := loadGenesis(genesis)
+	if err != nil {
+		return nil, err
 	}
+	gblock := gen.ToBlock()
+
+	blocks, err := blocksFromFile(chainfile, gblock)
+	if err != nil {
+		return nil, err
+	}
+
+	c := &Chain{genesis: gen, blocks: blocks, chainConfig: gen.Config}
+	return c, nil
 }

 func loadGenesis(genesisFile string) (core.Genesis, error) {
@ -261,22 +163,6 @@ func loadGenesis(genesisFile string) (core.Genesis, error) {
 	return gen, nil
 }

-type Addresses []common.Address
-
-func (a Addresses) Len() int {
-	return len(a)
-}
-
-func (a Addresses) Less(i, j int) bool {
-	return bytes.Compare(a[i][:], a[j][:]) < 0
-}
-
-func (a Addresses) Swap(i, j int) {
-	tmp := a[i]
-	a[i] = a[j]
-	a[j] = tmp
-}
-
 func blocksFromFile(chainfile string, gblock *types.Block) ([]*types.Block, error) {
 	// Load chain.rlp.
 	fh, err := os.Open(chainfile)
@ -307,47 +193,3 @@ func blocksFromFile(chainfile string, gblock *types.Block) ([]*types.Block, erro
 	}
 	return blocks, nil
 }
-
-func readState(file string) (map[common.Address]state.DumpAccount, error) {
-	f, err := os.ReadFile(file)
-	if err != nil {
-		return nil, fmt.Errorf("unable to read state: %v", err)
-	}
-	var dump state.Dump
-	if err := json.Unmarshal(f, &dump); err != nil {
-		return nil, fmt.Errorf("unable to unmarshal state: %v", err)
-	}
-
-	state := make(map[common.Address]state.DumpAccount)
-	for key, acct := range dump.Accounts {
-		var addr common.Address
-		if err := addr.UnmarshalText([]byte(key)); err != nil {
-			return nil, fmt.Errorf("invalid address %q", key)
-		}
-		state[addr] = acct
-	}
-	return state, nil
-}
-
-func readAccounts(file string) (map[common.Address]*senderInfo, error) {
-	f, err := os.ReadFile(file)
-	if err != nil {
-		return nil, fmt.Errorf("unable to read state: %v", err)
-	}
-	type account struct {
-		Key hexutil.Bytes `json:"key"`
-	}
-	keys := make(map[common.Address]account)
-	if err := json.Unmarshal(f, &keys); err != nil {
-		return nil, fmt.Errorf("unable to unmarshal accounts: %v", err)
-	}
-	accounts := make(map[common.Address]*senderInfo)
-	for addr, acc := range keys {
-		pk, err := crypto.HexToECDSA(common.Bytes2Hex(acc.Key))
-		if err != nil {
-			return nil, fmt.Errorf("unable to read private key for %s: %v", err, addr)
-		}
-		accounts[addr] = &senderInfo{Key: pk, Nonce: 0}
-	}
-	return accounts, nil
-}
--- a/cmd/devp2p/internal/ethtest/chain_test.go
+++ b/cmd/devp2p/internal/ethtest/chain_test.go
@ -30,7 +30,6 @@ import (
 // TestEthProtocolNegotiation tests whether the test suite
 // can negotiate the highest eth protocol in a status message exchange
 func TestEthProtocolNegotiation(t *testing.T) {
-	t.Parallel()
 	var tests = []struct {
 		conn     *Conn
 		caps     []p2p.Cap
@ -123,27 +122,30 @@ func TestEthProtocolNegotiation(t *testing.T) {
 	}
 }

-// TestChainGetHeaders tests whether the test suite can correctly
+// TestChain_GetHeaders tests whether the test suite can correctly
 // respond to a GetBlockHeaders request from a node.
-func TestChainGetHeaders(t *testing.T) {
-	t.Parallel()
-
-	dir, err := filepath.Abs("./testdata")
+func TestChain_GetHeaders(t *testing.T) {
+	chainFile, err := filepath.Abs("./testdata/chain.rlp")
 	if err != nil {
 		t.Fatal(err)
 	}
-	chain, err := NewChain(dir)
+	genesisFile, err := filepath.Abs("./testdata/genesis.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	chain, err := loadChain(chainFile, genesisFile)
 	if err != nil {
 		t.Fatal(err)
 	}

 	var tests = []struct {
-		req      eth.GetBlockHeadersPacket
+		req      GetBlockHeaders
 		expected []*types.Header
 	}{
 		{
-			req: eth.GetBlockHeadersPacket{
-				GetBlockHeadersRequest: &eth.GetBlockHeadersRequest{
+			req: GetBlockHeaders{
+				GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
 					Origin:  eth.HashOrNumber{Number: uint64(2)},
 					Amount:  uint64(5),
 					Skip:    1,
@ -159,8 +161,8 @@ func TestChainGetHeaders(t *testing.T) {
 			},
 		},
 		{
-			req: eth.GetBlockHeadersPacket{
-				GetBlockHeadersRequest: &eth.GetBlockHeadersRequest{
+			req: GetBlockHeaders{
+				GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
 					Origin:  eth.HashOrNumber{Number: uint64(chain.Len() - 1)},
 					Amount:  uint64(3),
 					Skip:    0,
@ -174,8 +176,8 @@ func TestChainGetHeaders(t *testing.T) {
 			},
 		},
 		{
-			req: eth.GetBlockHeadersPacket{
-				GetBlockHeadersRequest: &eth.GetBlockHeadersRequest{
+			req: GetBlockHeaders{
+				GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
 					Origin:  eth.HashOrNumber{Hash: chain.Head().Hash()},
 					Amount:  uint64(1),
 					Skip:    0,
--- a/cmd/devp2p/internal/ethtest/conn.go
+++ b/cmd/devp2p/internal/ethtest/conn.go
@ -1,370 +0,0 @@
-// Copyright 2023 The go-ethereum Authors
-// This file is part of go-ethereum.
-//
-// go-ethereum is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// go-ethereum is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
-
-package ethtest
-
-import (
-	"crypto/ecdsa"
-	"errors"
-	"fmt"
-	"net"
-	"reflect"
-	"time"
-
-	"github.com/davecgh/go-spew/spew"
-	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/eth/protocols/eth"
-	"github.com/ethereum/go-ethereum/eth/protocols/snap"
-	"github.com/ethereum/go-ethereum/p2p"
-	"github.com/ethereum/go-ethereum/p2p/rlpx"
-	"github.com/ethereum/go-ethereum/rlp"
-)
-
-var (
-	pretty = spew.ConfigState{
-		Indent:                  "  ",
-		DisableCapacities:       true,
-		DisablePointerAddresses: true,
-		SortKeys:                true,
-	}
-	timeout = 2 * time.Second
-)
-
-// dial attempts to dial the given node and perform a handshake, returning the
-// created Conn if successful.
-func (s *Suite) dial() (*Conn, error) {
-	key, _ := crypto.GenerateKey()
-	return s.dialAs(key)
-}
-
-// dialAs attempts to dial a given node and perform a handshake using the given
-// private key.
-func (s *Suite) dialAs(key *ecdsa.PrivateKey) (*Conn, error) {
-	fd, err := net.Dial("tcp", fmt.Sprintf("%v:%d", s.Dest.IP(), s.Dest.TCP()))
-	if err != nil {
-		return nil, err
-	}
-	conn := Conn{Conn: rlpx.NewConn(fd, s.Dest.Pubkey())}
-	conn.ourKey = key
-	_, err = conn.Handshake(conn.ourKey)
-	if err != nil {
-		conn.Close()
-		return nil, err
-	}
-	conn.caps = []p2p.Cap{
-		{Name: "eth", Version: 67},
-		{Name: "eth", Version: 68},
-	}
-	conn.ourHighestProtoVersion = 68
-	return &conn, nil
-}
-
-// dialSnap creates a connection with snap/1 capability.
-func (s *Suite) dialSnap() (*Conn, error) {
-	conn, err := s.dial()
-	if err != nil {
-		return nil, fmt.Errorf("dial failed: %v", err)
-	}
-	conn.caps = append(conn.caps, p2p.Cap{Name: "snap", Version: 1})
-	conn.ourHighestSnapProtoVersion = 1
-	return conn, nil
-}
-
-// Conn represents an individual connection with a peer
-type Conn struct {
-	*rlpx.Conn
-	ourKey                     *ecdsa.PrivateKey
-	negotiatedProtoVersion     uint
-	negotiatedSnapProtoVersion uint
-	ourHighestProtoVersion     uint
-	ourHighestSnapProtoVersion uint
-	caps                       []p2p.Cap
-}
-
-// Read reads a packet from the connection.
-func (c *Conn) Read() (uint64, []byte, error) {
-	c.SetReadDeadline(time.Now().Add(timeout))
-	code, data, _, err := c.Conn.Read()
-	if err != nil {
-		return 0, nil, err
-	}
-	return code, data, nil
-}
-
-// ReadMsg attempts to read a devp2p message with a specific code.
-func (c *Conn) ReadMsg(proto Proto, code uint64, msg any) error {
-	c.SetReadDeadline(time.Now().Add(timeout))
-	for {
-		got, data, err := c.Read()
-		if err != nil {
-			return err
-		}
-		if protoOffset(proto)+code == got {
-			return rlp.DecodeBytes(data, msg)
-		}
-	}
-}
-
-// Write writes a eth packet to the connection.
-func (c *Conn) Write(proto Proto, code uint64, msg any) error {
-	c.SetWriteDeadline(time.Now().Add(timeout))
-	payload, err := rlp.EncodeToBytes(msg)
-	if err != nil {
-		return err
-	}
-	_, err = c.Conn.Write(protoOffset(proto)+code, payload)
-	return err
-}
-
-// ReadEth reads an Eth sub-protocol wire message.
-func (c *Conn) ReadEth() (any, error) {
-	c.SetReadDeadline(time.Now().Add(timeout))
-	for {
-		code, data, _, err := c.Conn.Read()
-		if err != nil {
-			return nil, err
-		}
-		if code == pingMsg {
-			c.Write(baseProto, pongMsg, []byte{})
-			continue
-		}
-		if getProto(code) != ethProto {
-			// Read until eth message.
-			continue
-		}
-		code -= baseProtoLen
-
-		var msg any
-		switch int(code) {
-		case eth.StatusMsg:
-			msg = new(eth.StatusPacket)
-		case eth.GetBlockHeadersMsg:
-			msg = new(eth.GetBlockHeadersPacket)
-		case eth.BlockHeadersMsg:
-			msg = new(eth.BlockHeadersPacket)
-		case eth.GetBlockBodiesMsg:
-			msg = new(eth.GetBlockBodiesPacket)
-		case eth.BlockBodiesMsg:
-			msg = new(eth.BlockBodiesPacket)
-		case eth.NewBlockMsg:
-			msg = new(eth.NewBlockPacket)
-		case eth.NewBlockHashesMsg:
-			msg = new(eth.NewBlockHashesPacket)
-		case eth.TransactionsMsg:
-			msg = new(eth.TransactionsPacket)
-		case eth.NewPooledTransactionHashesMsg:
-			msg = new(eth.NewPooledTransactionHashesPacket)
-		case eth.GetPooledTransactionsMsg:
-			msg = new(eth.GetPooledTransactionsPacket)
-		case eth.PooledTransactionsMsg:
-			msg = new(eth.PooledTransactionsPacket)
-		default:
-			panic(fmt.Sprintf("unhandled eth msg code %d", code))
-		}
-		if err := rlp.DecodeBytes(data, msg); err != nil {
-			return nil, fmt.Errorf("unable to decode eth msg: %v", err)
-		}
-		return msg, nil
-	}
-}
-
-// ReadSnap reads a snap/1 response with the given id from the connection.
-func (c *Conn) ReadSnap() (any, error) {
-	c.SetReadDeadline(time.Now().Add(timeout))
-	for {
-		code, data, _, err := c.Conn.Read()
-		if err != nil {
-			return nil, err
-		}
-		if getProto(code) != snapProto {
-			// Read until snap message.
-			continue
-		}
-		code -= baseProtoLen + ethProtoLen
-
-		var msg any
-		switch int(code) {
-		case snap.GetAccountRangeMsg:
-			msg = new(snap.GetAccountRangePacket)
-		case snap.AccountRangeMsg:
-			msg = new(snap.AccountRangePacket)
-		case snap.GetStorageRangesMsg:
-			msg = new(snap.GetStorageRangesPacket)
-		case snap.StorageRangesMsg:
-			msg = new(snap.StorageRangesPacket)
-		case snap.GetByteCodesMsg:
-			msg = new(snap.GetByteCodesPacket)
-		case snap.ByteCodesMsg:
-			msg = new(snap.ByteCodesPacket)
-		case snap.GetTrieNodesMsg:
-			msg = new(snap.GetTrieNodesPacket)
-		case snap.TrieNodesMsg:
-			msg = new(snap.TrieNodesPacket)
-		default:
-			panic(fmt.Errorf("unhandled snap code: %d", code))
-		}
-		if err := rlp.DecodeBytes(data, msg); err != nil {
-			return nil, fmt.Errorf("could not rlp decode message: %v", err)
-		}
-		return msg, nil
-	}
-}
-
-// peer performs both the protocol handshake and the status message
-// exchange with the node in order to peer with it.
-func (c *Conn) peer(chain *Chain, status *eth.StatusPacket) error {
-	if err := c.handshake(); err != nil {
-		return fmt.Errorf("handshake failed: %v", err)
-	}
-	if err := c.statusExchange(chain, status); err != nil {
-		return fmt.Errorf("status exchange failed: %v", err)
-	}
-	return nil
-}
-
-// handshake performs a protocol handshake with the node.
-func (c *Conn) handshake() error {
-	// Write hello to client.
-	pub0 := crypto.FromECDSAPub(&c.ourKey.PublicKey)[1:]
-	ourHandshake := &protoHandshake{
-		Version: 5,
-		Caps:    c.caps,
-		ID:      pub0,
-	}
-	if err := c.Write(baseProto, handshakeMsg, ourHandshake); err != nil {
-		return fmt.Errorf("write to connection failed: %v", err)
-	}
-	// Read hello from client.
-	code, data, err := c.Read()
-	if err != nil {
-		return fmt.Errorf("erroring reading handshake: %v", err)
-	}
-	switch code {
-	case handshakeMsg:
-		msg := new(protoHandshake)
-		if err := rlp.DecodeBytes(data, &msg); err != nil {
-			return fmt.Errorf("error decoding handshake msg: %v", err)
-		}
-		// Set snappy if version is at least 5.
-		if msg.Version >= 5 {
-			c.SetSnappy(true)
-		}
-		c.negotiateEthProtocol(msg.Caps)
-		if c.negotiatedProtoVersion == 0 {
-			return fmt.Errorf("could not negotiate eth protocol (remote caps: %v, local eth version: %v)", msg.Caps, c.ourHighestProtoVersion)
-		}
-		// If we require snap, verify that it was negotiated.
-		if c.ourHighestSnapProtoVersion != c.negotiatedSnapProtoVersion {
-			return fmt.Errorf("could not negotiate snap protocol (remote caps: %v, local snap version: %v)", msg.Caps, c.ourHighestSnapProtoVersion)
-		}
-		return nil
-	default:
-		return fmt.Errorf("bad handshake: got msg code %d", code)
-	}
-}
-
-// negotiateEthProtocol sets the Conn's eth protocol version to highest
-// advertised capability from peer.
-func (c *Conn) negotiateEthProtocol(caps []p2p.Cap) {
-	var highestEthVersion uint
-	var highestSnapVersion uint
-	for _, capability := range caps {
-		switch capability.Name {
-		case "eth":
-			if capability.Version > highestEthVersion && capability.Version <= c.ourHighestProtoVersion {
-				highestEthVersion = capability.Version
-			}
-		case "snap":
-			if capability.Version > highestSnapVersion && capability.Version <= c.ourHighestSnapProtoVersion {
-				highestSnapVersion = capability.Version
-			}
-		}
-	}
-	c.negotiatedProtoVersion = highestEthVersion
-	c.negotiatedSnapProtoVersion = highestSnapVersion
-}
-
-// statusExchange performs a `Status` message exchange with the given node.
-func (c *Conn) statusExchange(chain *Chain, status *eth.StatusPacket) error {
-loop:
-	for {
-		code, data, err := c.Read()
-		if err != nil {
-			return fmt.Errorf("failed to read from connection: %w", err)
-		}
-		switch code {
-		case eth.StatusMsg + protoOffset(ethProto):
-			msg := new(eth.StatusPacket)
-			if err := rlp.DecodeBytes(data, &msg); err != nil {
-				return fmt.Errorf("error decoding status packet: %w", err)
-			}
-			if have, want := msg.Head, chain.blocks[chain.Len()-1].Hash(); have != want {
-				return fmt.Errorf("wrong head block in status, want:  %#x (block %d) have %#x",
-					want, chain.blocks[chain.Len()-1].NumberU64(), have)
-			}
-			if have, want := msg.TD.Cmp(chain.TD()), 0; have != want {
-				return fmt.Errorf("wrong TD in status: have %v want %v", have, want)
-			}
-			if have, want := msg.ForkID, chain.ForkID(); !reflect.DeepEqual(have, want) {
-				return fmt.Errorf("wrong fork ID in status: have %v, want %v", have, want)
-			}
-			if have, want := msg.ProtocolVersion, c.ourHighestProtoVersion; have != uint32(want) {
-				return fmt.Errorf("wrong protocol version: have %v, want %v", have, want)
-			}
-			// make sure eth protocol version is set for negotiation
-			if c.negotiatedProtoVersion == 0 {
-				return errors.New("eth protocol version must be set in Conn")
-			}
-			if status == nil {
-				// default status message
-				status = &eth.StatusPacket{
-					ProtocolVersion: uint32(c.negotiatedProtoVersion),
-					NetworkID:       chain.config.ChainID.Uint64(),
-					TD:              chain.TD(),
-					Head:            chain.blocks[chain.Len()-1].Hash(),
-					Genesis:         chain.blocks[0].Hash(),
-					ForkID:          chain.ForkID(),
-				}
-			}
-			if err := c.Write(ethProto, eth.StatusMsg, status); err != nil {
-				return fmt.Errorf("write to connection failed: %v", err)
-			}
-		case eth.UpgradeStatusMsg + protoOffset(ethProto):
-			msg := new(eth.UpgradeStatusPacket)
-			if err := rlp.DecodeBytes(data, &msg); err != nil {
-				return fmt.Errorf("error decoding status packet: %w", err)
-			}
-			if err := c.Write(ethProto, eth.UpgradeStatusMsg, msg); err != nil {
-				return fmt.Errorf("write to connection failed: %v", err)
-			}
-			break loop
-		case discMsg:
-			var msg []p2p.DiscReason
-			if rlp.DecodeBytes(data, &msg); len(msg) == 0 {
-				return errors.New("invalid disconnect message")
-			}
-			return fmt.Errorf("disconnect received: %v", pretty.Sdump(msg))
-		case pingMsg:
-			// TODO (renaynay): in the future, this should be an error
-			// (PINGs should not be a response upon fresh connection)
-			c.Write(baseProto, pongMsg, nil)
-		default:
-			return fmt.Errorf("bad status message: code %d", code)
-		}
-	}
-
-	return nil
-}
--- a/cmd/devp2p/internal/ethtest/engine.go
+++ b/cmd/devp2p/internal/ethtest/engine.go
@ -1,69 +0,0 @@
-// Copyright 2023 The go-ethereum Authors
-// This file is part of go-ethereum.
-//
-// go-ethereum is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// go-ethereum is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
-
-package ethtest
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"net/http"
-	"os"
-	"path"
-	"time"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/golang-jwt/jwt/v4"
-)
-
-// EngineClient is a wrapper around engine-related data.
-type EngineClient struct {
-	url     string
-	jwt     [32]byte
-	headfcu []byte
-}
-
-// NewEngineClient creates a new engine client.
-func NewEngineClient(dir, url, jwt string) (*EngineClient, error) {
-	headfcu, err := os.ReadFile(path.Join(dir, "headfcu.json"))
-	if err != nil {
-		return nil, fmt.Errorf("failed to read headfcu: %w", err)
-	}
-	return &EngineClient{url, common.HexToHash(jwt), headfcu}, nil
-}
-
-// token returns the jwt claim token for authorization.
-func (ec *EngineClient) token() string {
-	claims := jwt.RegisteredClaims{IssuedAt: jwt.NewNumericDate(time.Now())}
-	token, _ := jwt.NewWithClaims(jwt.SigningMethodHS256, claims).SignedString(ec.jwt[:])
-	return token
-}
-
-// sendForkchoiceUpdated sends an fcu for the head of the generated chain.
-func (ec *EngineClient) sendForkchoiceUpdated() error {
-	var (
-		req, _ = http.NewRequest(http.MethodPost, ec.url, io.NopCloser(bytes.NewReader(ec.headfcu)))
-		header = make(http.Header)
-	)
-	// Set header
-	header.Set("accept", "application/json")
-	header.Set("content-type", "application/json")
-	header.Set("Authorization", fmt.Sprintf("Bearer %v", ec.token()))
-	req.Header = header
-
-	_, err := new(http.Client).Do(req)
-	return err
-}
--- a/cmd/devp2p/internal/ethtest/helpers.go
+++ b/cmd/devp2p/internal/ethtest/helpers.go
@ -0,0 +1,675 @@
+// Copyright 2021 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package ethtest
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"reflect"
+	"strings"
+	"time"
+
+	"github.com/davecgh/go-spew/spew"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/eth/protocols/eth"
+	"github.com/ethereum/go-ethereum/internal/utesting"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/rlpx"
+)
+
+var (
+	pretty = spew.ConfigState{
+		Indent:                  "  ",
+		DisableCapacities:       true,
+		DisablePointerAddresses: true,
+		SortKeys:                true,
+	}
+	timeout = 20 * time.Second
+)
+
+// dial attempts to dial the given node and perform a handshake,
+// returning the created Conn if successful.
+func (s *Suite) dial() (*Conn, error) {
+	// dial
+	fd, err := net.Dial("tcp", fmt.Sprintf("%v:%d", s.Dest.IP(), s.Dest.TCP()))
+	if err != nil {
+		return nil, err
+	}
+	conn := Conn{Conn: rlpx.NewConn(fd, s.Dest.Pubkey())}
+	// do encHandshake
+	conn.ourKey, _ = crypto.GenerateKey()
+	_, err = conn.Handshake(conn.ourKey)
+	if err != nil {
+		conn.Close()
+		return nil, err
+	}
+	// set default p2p capabilities
+	conn.caps = []p2p.Cap{
+		{Name: "eth", Version: 66},
+		{Name: "eth", Version: 67},
+		{Name: "eth", Version: 68},
+	}
+	conn.ourHighestProtoVersion = 68
+	return &conn, nil
+}
+
+// dialSnap creates a connection with snap/1 capability.
+func (s *Suite) dialSnap() (*Conn, error) {
+	conn, err := s.dial()
+	if err != nil {
+		return nil, fmt.Errorf("dial failed: %v", err)
+	}
+	conn.caps = append(conn.caps, p2p.Cap{Name: "snap", Version: 1})
+	conn.ourHighestSnapProtoVersion = 1
+	return conn, nil
+}
+
+// peer performs both the protocol handshake and the status message
+// exchange with the node in order to peer with it.
+func (c *Conn) peer(chain *Chain, status *Status) error {
+	if err := c.handshake(); err != nil {
+		return fmt.Errorf("handshake failed: %v", err)
+	}
+	if _, err := c.statusExchange(chain, status); err != nil {
+		return fmt.Errorf("status exchange failed: %v", err)
+	}
+	return nil
+}
+
+// handshake performs a protocol handshake with the node.
+func (c *Conn) handshake() error {
+	defer c.SetDeadline(time.Time{})
+	c.SetDeadline(time.Now().Add(10 * time.Second))
+	// write hello to client
+	pub0 := crypto.FromECDSAPub(&c.ourKey.PublicKey)[1:]
+	ourHandshake := &Hello{
+		Version: 5,
+		Caps:    c.caps,
+		ID:      pub0,
+	}
+	if err := c.Write(ourHandshake); err != nil {
+		return fmt.Errorf("write to connection failed: %v", err)
+	}
+	// read hello from client
+	switch msg := c.Read().(type) {
+	case *Hello:
+		// set snappy if version is at least 5
+		if msg.Version >= 5 {
+			c.SetSnappy(true)
+		}
+		c.negotiateEthProtocol(msg.Caps)
+		if c.negotiatedProtoVersion == 0 {
+			return fmt.Errorf("could not negotiate eth protocol (remote caps: %v, local eth version: %v)", msg.Caps, c.ourHighestProtoVersion)
+		}
+		// If we require snap, verify that it was negotiated
+		if c.ourHighestSnapProtoVersion != c.negotiatedSnapProtoVersion {
+			return fmt.Errorf("could not negotiate snap protocol (remote caps: %v, local snap version: %v)", msg.Caps, c.ourHighestSnapProtoVersion)
+		}
+		return nil
+	default:
+		return fmt.Errorf("bad handshake: %#v", msg)
+	}
+}
+
+// negotiateEthProtocol sets the Conn's eth protocol version to highest
+// advertised capability from peer.
+func (c *Conn) negotiateEthProtocol(caps []p2p.Cap) {
+	var highestEthVersion uint
+	var highestSnapVersion uint
+	for _, capability := range caps {
+		switch capability.Name {
+		case "eth":
+			if capability.Version > highestEthVersion && capability.Version <= c.ourHighestProtoVersion {
+				highestEthVersion = capability.Version
+			}
+		case "snap":
+			if capability.Version > highestSnapVersion && capability.Version <= c.ourHighestSnapProtoVersion {
+				highestSnapVersion = capability.Version
+			}
+		}
+	}
+	c.negotiatedProtoVersion = highestEthVersion
+	c.negotiatedSnapProtoVersion = highestSnapVersion
+}
+
+// statusExchange performs a `Status` message exchange with the given node.
+func (c *Conn) statusExchange(chain *Chain, status *Status) (Message, error) {
+	defer c.SetDeadline(time.Time{})
+	c.SetDeadline(time.Now().Add(20 * time.Second))
+
+	// read status message from client
+	var message Message
+loop:
+	for {
+		switch msg := c.Read().(type) {
+		case *Status:
+			if have, want := msg.Head, chain.blocks[chain.Len()-1].Hash(); have != want {
+				return nil, fmt.Errorf("wrong head block in status, want:  %#x (block %d) have %#x",
+					want, chain.blocks[chain.Len()-1].NumberU64(), have)
+			}
+			if have, want := msg.TD.Cmp(chain.TD()), 0; have != want {
+				return nil, fmt.Errorf("wrong TD in status: have %v want %v", have, want)
+			}
+			if have, want := msg.ForkID, chain.ForkID(); !reflect.DeepEqual(have, want) {
+				return nil, fmt.Errorf("wrong fork ID in status: have %v, want %v", have, want)
+			}
+			if have, want := msg.ProtocolVersion, c.ourHighestProtoVersion; have != uint32(want) {
+				return nil, fmt.Errorf("wrong protocol version: have %v, want %v", have, want)
+			}
+			message = msg
+			break loop
+		case *Disconnect:
+			return nil, fmt.Errorf("disconnect received: %v", msg.Reason)
+		case *Ping:
+			c.Write(&Pong{}) // TODO (renaynay): in the future, this should be an error
+			// (PINGs should not be a response upon fresh connection)
+		default:
+			return nil, fmt.Errorf("bad status message: %s", pretty.Sdump(msg))
+		}
+	}
+	// make sure eth protocol version is set for negotiation
+	if c.negotiatedProtoVersion == 0 {
+		return nil, errors.New("eth protocol version must be set in Conn")
+	}
+	if status == nil {
+		// default status message
+		status = &Status{
+			ProtocolVersion: uint32(c.negotiatedProtoVersion),
+			NetworkID:       chain.chainConfig.ChainID.Uint64(),
+			TD:              chain.TD(),
+			Head:            chain.blocks[chain.Len()-1].Hash(),
+			Genesis:         chain.blocks[0].Hash(),
+			ForkID:          chain.ForkID(),
+		}
+	}
+	if err := c.Write(status); err != nil {
+		return nil, fmt.Errorf("write to connection failed: %v", err)
+	}
+
+	// exchange UpgradeStatus
+	if c.negotiatedProtoVersion >= eth.ETH67 {
+		extensionRaw, _ := (&eth.UpgradeStatusExtension{}).Encode()
+		upgradeStatus := UpgradeStatus{
+			Extension: extensionRaw,
+		}
+		if err := c.Write(upgradeStatus); err != nil {
+			return nil, fmt.Errorf("write to connection failed: %v", err)
+		}
+		switch msg := c.Read().(type) {
+		case *UpgradeStatus:
+			log.Debug("receive UpgradeStatus")
+		case *Disconnect:
+			return nil, fmt.Errorf("disconnect received: %v", msg.Reason)
+		case *Ping:
+			c.Write(&Pong{}) // TODO (renaynay): in the future, this should be an error
+			// (PINGs should not be a response upon fresh connection)
+		default:
+			return nil, fmt.Errorf("bad status message: %s", pretty.Sdump(msg))
+		}
+	}
+
+	return message, nil
+}
+
+// createSendAndRecvConns creates two connections, one for sending messages to the
+// node, and one for receiving messages from the node.
+func (s *Suite) createSendAndRecvConns() (*Conn, *Conn, error) {
+	sendConn, err := s.dial()
+	if err != nil {
+		return nil, nil, fmt.Errorf("dial failed: %v", err)
+	}
+	recvConn, err := s.dial()
+	if err != nil {
+		sendConn.Close()
+		return nil, nil, fmt.Errorf("dial failed: %v", err)
+	}
+	return sendConn, recvConn, nil
+}
+
+// readAndServe serves GetBlockHeaders requests while waiting
+// on another message from the node.
+func (c *Conn) readAndServe(chain *Chain, timeout time.Duration) Message {
+	start := time.Now()
+	for time.Since(start) < timeout {
+		c.SetReadDeadline(time.Now().Add(10 * time.Second))
+
+		msg := c.Read()
+		switch msg := msg.(type) {
+		case *Ping:
+			c.Write(&Pong{})
+		case *GetBlockHeaders:
+			headers, err := chain.GetHeaders(msg)
+			if err != nil {
+				return errorf("could not get headers for inbound header request: %v", err)
+			}
+			resp := &BlockHeaders{
+				RequestId:          msg.ReqID(),
+				BlockHeadersPacket: eth.BlockHeadersPacket(headers),
+			}
+			if err := c.Write(resp); err != nil {
+				return errorf("could not write to connection: %v", err)
+			}
+		default:
+			return msg
+		}
+	}
+	return errorf("no message received within %v", timeout)
+}
+
+// headersRequest executes the given `GetBlockHeaders` request.
+func (c *Conn) headersRequest(request *GetBlockHeaders, chain *Chain, reqID uint64) ([]*types.Header, error) {
+	defer c.SetReadDeadline(time.Time{})
+	c.SetReadDeadline(time.Now().Add(20 * time.Second))
+
+	// write request
+	request.RequestId = reqID
+	if err := c.Write(request); err != nil {
+		return nil, fmt.Errorf("could not write to connection: %v", err)
+	}
+
+	// wait for response
+	msg := c.waitForResponse(chain, timeout, request.RequestId)
+	resp, ok := msg.(*BlockHeaders)
+	if !ok {
+		return nil, fmt.Errorf("unexpected message received: %s", pretty.Sdump(msg))
+	}
+	headers := []*types.Header(resp.BlockHeadersPacket)
+	return headers, nil
+}
+
+func (c *Conn) snapRequest(msg Message, id uint64, chain *Chain) (Message, error) {
+	defer c.SetReadDeadline(time.Time{})
+	c.SetReadDeadline(time.Now().Add(5 * time.Second))
+	if err := c.Write(msg); err != nil {
+		return nil, fmt.Errorf("could not write to connection: %v", err)
+	}
+	return c.ReadSnap(id)
+}
+
+// headersMatch returns whether the received headers match the given request
+func headersMatch(expected []*types.Header, headers []*types.Header) bool {
+	return reflect.DeepEqual(expected, headers)
+}
+
+// waitForResponse reads from the connection until a response with the expected
+// request ID is received.
+func (c *Conn) waitForResponse(chain *Chain, timeout time.Duration, requestID uint64) Message {
+	for {
+		msg := c.readAndServe(chain, timeout)
+		if msg.ReqID() == requestID {
+			return msg
+		}
+	}
+}
+
+// sendNextBlock broadcasts the next block in the chain and waits
+// for the node to propagate the block and import it into its chain.
+func (s *Suite) sendNextBlock() error {
+	// set up sending and receiving connections
+	sendConn, recvConn, err := s.createSendAndRecvConns()
+	if err != nil {
+		return err
+	}
+	defer sendConn.Close()
+	defer recvConn.Close()
+	if err = sendConn.peer(s.chain, nil); err != nil {
+		return fmt.Errorf("peering failed: %v", err)
+	}
+	if err = recvConn.peer(s.chain, nil); err != nil {
+		return fmt.Errorf("peering failed: %v", err)
+	}
+	// create new block announcement
+	nextBlock := s.fullChain.blocks[s.chain.Len()]
+	blockAnnouncement := &NewBlock{
+		Block: nextBlock,
+		TD:    s.fullChain.TotalDifficultyAt(s.chain.Len()),
+	}
+	// send announcement and wait for node to request the header
+	if err = s.testAnnounce(sendConn, recvConn, blockAnnouncement); err != nil {
+		return fmt.Errorf("failed to announce block: %v", err)
+	}
+	// wait for client to update its chain
+	if err = s.waitForBlockImport(recvConn, nextBlock); err != nil {
+		return fmt.Errorf("failed to receive confirmation of block import: %v", err)
+	}
+	// update test suite chain
+	s.chain.blocks = append(s.chain.blocks, nextBlock)
+	return nil
+}
+
+// testAnnounce writes a block announcement to the node and waits for the node
+// to propagate it.
+func (s *Suite) testAnnounce(sendConn, receiveConn *Conn, blockAnnouncement *NewBlock) error {
+	if err := sendConn.Write(blockAnnouncement); err != nil {
+		return fmt.Errorf("could not write to connection: %v", err)
+	}
+	return s.waitAnnounce(receiveConn, blockAnnouncement)
+}
+
+// waitAnnounce waits for a NewBlock or NewBlockHashes announcement from the node.
+func (s *Suite) waitAnnounce(conn *Conn, blockAnnouncement *NewBlock) error {
+	for {
+		switch msg := conn.readAndServe(s.chain, timeout).(type) {
+		case *NewBlock:
+			if !reflect.DeepEqual(blockAnnouncement.Block.Header(), msg.Block.Header()) {
+				return fmt.Errorf("wrong header in block announcement: \nexpected %v "+
+					"\ngot %v", blockAnnouncement.Block.Header(), msg.Block.Header())
+			}
+			if !reflect.DeepEqual(blockAnnouncement.TD, msg.TD) {
+				return fmt.Errorf("wrong TD in announcement: expected %v, got %v", blockAnnouncement.TD, msg.TD)
+			}
+			return nil
+		case *NewBlockHashes:
+			hashes := *msg
+			if blockAnnouncement.Block.Hash() != hashes[0].Hash {
+				return fmt.Errorf("wrong block hash in announcement: expected %v, got %v", blockAnnouncement.Block.Hash(), hashes[0].Hash)
+			}
+			return nil
+
+		// ignore tx announcements from previous tests
+		case *NewPooledTransactionHashes66:
+			continue
+		case *NewPooledTransactionHashes:
+			continue
+		case *Transactions:
+			continue
+
+		default:
+			return fmt.Errorf("unexpected: %s", pretty.Sdump(msg))
+		}
+	}
+}
+
+func (s *Suite) waitForBlockImport(conn *Conn, block *types.Block) error {
+	defer conn.SetReadDeadline(time.Time{})
+	conn.SetReadDeadline(time.Now().Add(20 * time.Second))
+	// create request
+	req := &GetBlockHeaders{
+		GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
+			Origin: eth.HashOrNumber{Hash: block.Hash()},
+			Amount: 1,
+		},
+	}
+
+	// loop until BlockHeaders response contains desired block, confirming the
+	// node imported the block
+	for {
+		requestID := uint64(54)
+		headers, err := conn.headersRequest(req, s.chain, requestID)
+		if err != nil {
+			return fmt.Errorf("GetBlockHeader request failed: %v", err)
+		}
+		// if headers response is empty, node hasn't imported block yet, try again
+		if len(headers) == 0 {
+			time.Sleep(100 * time.Millisecond)
+			continue
+		}
+		if !reflect.DeepEqual(block.Header(), headers[0]) {
+			return fmt.Errorf("wrong header returned: wanted %v, got %v", block.Header(), headers[0])
+		}
+		return nil
+	}
+}
+
+func (s *Suite) oldAnnounce() error {
+	sendConn, receiveConn, err := s.createSendAndRecvConns()
+	if err != nil {
+		return err
+	}
+	defer sendConn.Close()
+	defer receiveConn.Close()
+	if err := sendConn.peer(s.chain, nil); err != nil {
+		return fmt.Errorf("peering failed: %v", err)
+	}
+	if err := receiveConn.peer(s.chain, nil); err != nil {
+		return fmt.Errorf("peering failed: %v", err)
+	}
+	// create old block announcement
+	oldBlockAnnounce := &NewBlock{
+		Block: s.chain.blocks[len(s.chain.blocks)/2],
+		TD:    s.chain.blocks[len(s.chain.blocks)/2].Difficulty(),
+	}
+	if err := sendConn.Write(oldBlockAnnounce); err != nil {
+		return fmt.Errorf("could not write to connection: %v", err)
+	}
+	// wait to see if the announcement is propagated
+	switch msg := receiveConn.readAndServe(s.chain, time.Second*8).(type) {
+	case *NewBlock:
+		block := *msg
+		if block.Block.Hash() == oldBlockAnnounce.Block.Hash() {
+			return fmt.Errorf("unexpected: block propagated: %s", pretty.Sdump(msg))
+		}
+	case *NewBlockHashes:
+		hashes := *msg
+		for _, hash := range hashes {
+			if hash.Hash == oldBlockAnnounce.Block.Hash() {
+				return fmt.Errorf("unexpected: block announced: %s", pretty.Sdump(msg))
+			}
+		}
+	case *Error:
+		errMsg := *msg
+		// check to make sure error is timeout (propagation didn't come through == test successful)
+		if !strings.Contains(errMsg.String(), "timeout") {
+			return fmt.Errorf("unexpected error: %v", pretty.Sdump(msg))
+		}
+	default:
+		return fmt.Errorf("unexpected: %s", pretty.Sdump(msg))
+	}
+	return nil
+}
+
+func (s *Suite) maliciousHandshakes(t *utesting.T) error {
+	conn, err := s.dial()
+	if err != nil {
+		return fmt.Errorf("dial failed: %v", err)
+	}
+	defer conn.Close()
+
+	// write hello to client
+	pub0 := crypto.FromECDSAPub(&conn.ourKey.PublicKey)[1:]
+	handshakes := []*Hello{
+		{
+			Version: 5,
+			Caps: []p2p.Cap{
+				{Name: largeString(2), Version: 64},
+			},
+			ID: pub0,
+		},
+		{
+			Version: 5,
+			Caps: []p2p.Cap{
+				{Name: "eth", Version: 64},
+				{Name: "eth", Version: 65},
+			},
+			ID: append(pub0, byte(0)),
+		},
+		{
+			Version: 5,
+			Caps: []p2p.Cap{
+				{Name: "eth", Version: 64},
+				{Name: "eth", Version: 65},
+			},
+			ID: append(pub0, pub0...),
+		},
+		{
+			Version: 5,
+			Caps: []p2p.Cap{
+				{Name: "eth", Version: 64},
+				{Name: "eth", Version: 65},
+			},
+			ID: largeBuffer(2),
+		},
+		{
+			Version: 5,
+			Caps: []p2p.Cap{
+				{Name: largeString(2), Version: 64},
+			},
+			ID: largeBuffer(2),
+		},
+	}
+	for i, handshake := range handshakes {
+		t.Logf("Testing malicious handshake %v\n", i)
+		if err := conn.Write(handshake); err != nil {
+			return fmt.Errorf("could not write to connection: %v", err)
+		}
+		// check that the peer disconnected
+		for i := 0; i < 2; i++ {
+			switch msg := conn.readAndServe(s.chain, 20*time.Second).(type) {
+			case *Disconnect:
+			case *Error:
+			case *Hello:
+				// Discard one hello as Hello's are sent concurrently
+				continue
+			default:
+				return fmt.Errorf("unexpected: %s", pretty.Sdump(msg))
+			}
+		}
+		// dial for the next round
+		conn, err = s.dial()
+		if err != nil {
+			return fmt.Errorf("dial failed: %v", err)
+		}
+	}
+	return nil
+}
+
+func (s *Suite) maliciousStatus(conn *Conn) error {
+	if err := conn.handshake(); err != nil {
+		return fmt.Errorf("handshake failed: %v", err)
+	}
+	status := &Status{
+		ProtocolVersion: uint32(conn.negotiatedProtoVersion),
+		NetworkID:       s.chain.chainConfig.ChainID.Uint64(),
+		TD:              largeNumber(2),
+		Head:            s.chain.blocks[s.chain.Len()-1].Hash(),
+		Genesis:         s.chain.blocks[0].Hash(),
+		ForkID:          s.chain.ForkID(),
+	}
+
+	// get status
+	msg, err := conn.statusExchange(s.chain, status)
+	if err != nil {
+		return fmt.Errorf("status exchange failed: %v", err)
+	}
+	switch msg := msg.(type) {
+	case *Status:
+	default:
+		return fmt.Errorf("expected status, got: %#v ", msg)
+	}
+
+	// wait for disconnect
+	switch msg := conn.readAndServe(s.chain, timeout).(type) {
+	case *Disconnect:
+		return nil
+	case *Error:
+		return nil
+	default:
+		return fmt.Errorf("expected disconnect, got: %s", pretty.Sdump(msg))
+	}
+}
+
+func (s *Suite) hashAnnounce() error {
+	// create connections
+	sendConn, recvConn, err := s.createSendAndRecvConns()
+	if err != nil {
+		return fmt.Errorf("failed to create connections: %v", err)
+	}
+	defer sendConn.Close()
+	defer recvConn.Close()
+	if err := sendConn.peer(s.chain, nil); err != nil {
+		return fmt.Errorf("peering failed: %v", err)
+	}
+	if err := recvConn.peer(s.chain, nil); err != nil {
+		return fmt.Errorf("peering failed: %v", err)
+	}
+
+	// create NewBlockHashes announcement
+	type anno struct {
+		Hash   common.Hash // Hash of one particular block being announced
+		Number uint64      // Number of one particular block being announced
+	}
+	nextBlock := s.fullChain.blocks[s.chain.Len()]
+	announcement := anno{Hash: nextBlock.Hash(), Number: nextBlock.Number().Uint64()}
+	newBlockHash := &NewBlockHashes{announcement}
+	if err := sendConn.Write(newBlockHash); err != nil {
+		return fmt.Errorf("failed to write to connection: %v", err)
+	}
+
+	// Announcement sent, now wait for a header request
+	msg := sendConn.Read()
+	blockHeaderReq, ok := msg.(*GetBlockHeaders)
+	if !ok {
+		return fmt.Errorf("unexpected %s", pretty.Sdump(msg))
+	}
+	if blockHeaderReq.Amount != 1 {
+		return fmt.Errorf("unexpected number of block headers requested: %v", blockHeaderReq.Amount)
+	}
+	if blockHeaderReq.Origin.Hash != announcement.Hash {
+		return fmt.Errorf("unexpected block header requested. Announced:\n %v\n Remote request:\n%v",
+			pretty.Sdump(announcement),
+			pretty.Sdump(blockHeaderReq))
+	}
+	err = sendConn.Write(&BlockHeaders{
+		RequestId:          blockHeaderReq.ReqID(),
+		BlockHeadersPacket: eth.BlockHeadersPacket{nextBlock.Header()},
+	})
+	if err != nil {
+		return fmt.Errorf("failed to write to connection: %v", err)
+	}
+
+	// wait for block announcement
+	msg = recvConn.readAndServe(s.chain, timeout)
+	switch msg := msg.(type) {
+	case *NewBlockHashes:
+		hashes := *msg
+		if len(hashes) != 1 {
+			return fmt.Errorf("unexpected new block hash announcement: wanted 1 announcement, got %d", len(hashes))
+		}
+		if nextBlock.Hash() != hashes[0].Hash {
+			return fmt.Errorf("unexpected block hash announcement, wanted %v, got %v", nextBlock.Hash(),
+				hashes[0].Hash)
+		}
+
+	case *NewBlock:
+		// node should only propagate NewBlock without having requested the body if the body is empty
+		nextBlockBody := nextBlock.Body()
+		if len(nextBlockBody.Transactions) != 0 || len(nextBlockBody.Uncles) != 0 {
+			return fmt.Errorf("unexpected non-empty new block propagated: %s", pretty.Sdump(msg))
+		}
+		if msg.Block.Hash() != nextBlock.Hash() {
+			return fmt.Errorf("mismatched hash of propagated new block: wanted %v, got %v",
+				nextBlock.Hash(), msg.Block.Hash())
+		}
+		// check to make sure header matches header that was sent to the node
+		if !reflect.DeepEqual(nextBlock.Header(), msg.Block.Header()) {
+			return fmt.Errorf("incorrect header received: wanted %v, got %v", nextBlock.Header(), msg.Block.Header())
+		}
+	default:
+		return fmt.Errorf("unexpected: %s", pretty.Sdump(msg))
+	}
+	// confirm node imported block
+	if err := s.waitForBlockImport(recvConn, nextBlock); err != nil {
+		return fmt.Errorf("error waiting for node to import new block: %v", err)
+	}
+	// update the chain
+	s.chain.blocks = append(s.chain.blocks, nextBlock)
+	return nil
+}
--- a/cmd/devp2p/internal/ethtest/large.go
+++ b/cmd/devp2p/internal/ethtest/large.go
@ -0,0 +1,80 @@
+// Copyright 2020 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package ethtest
+
+import (
+	"crypto/rand"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// largeNumber returns a very large big.Int.
+func largeNumber(megabytes int) *big.Int {
+	buf := make([]byte, megabytes*1024*1024)
+	rand.Read(buf)
+	bigint := new(big.Int)
+	bigint.SetBytes(buf)
+	return bigint
+}
+
+// largeBuffer returns a very large buffer.
+func largeBuffer(megabytes int) []byte {
+	buf := make([]byte, megabytes*1024*1024)
+	rand.Read(buf)
+	return buf
+}
+
+// largeString returns a very large string.
+func largeString(megabytes int) string {
+	buf := make([]byte, megabytes*1024*1024)
+	rand.Read(buf)
+	return hexutil.Encode(buf)
+}
+
+func largeBlock() *types.Block {
+	return types.NewBlockWithHeader(largeHeader())
+}
+
+// Returns a random hash
+func randHash() common.Hash {
+	var h common.Hash
+	rand.Read(h[:])
+	return h
+}
+
+func largeHeader() *types.Header {
+	return &types.Header{
+		MixDigest:   randHash(),
+		ReceiptHash: randHash(),
+		TxHash:      randHash(),
+		Nonce:       types.BlockNonce{},
+		Extra:       []byte{},
+		Bloom:       types.Bloom{},
+		GasUsed:     0,
+		Coinbase:    common.Address{},
+		GasLimit:    0,
+		UncleHash:   types.EmptyUncleHash,
+		Time:        1337,
+		ParentHash:  randHash(),
+		Root:        randHash(),
+		Number:      largeNumber(2),
+		Difficulty:  largeNumber(2),
+	}
+}
--- a/cmd/devp2p/internal/ethtest/mkchain.sh
+++ b/cmd/devp2p/internal/ethtest/mkchain.sh
@ -1,9 +0,0 @@
-#!/bin/sh
-
-hivechain generate \
-  --fork-interval 6 \
-  --tx-interval 1 \
-  --length 500 \
-  --outdir testdata \
-  --lastfork cancun \
-  --outputs accounts,genesis,chain,headstate,txinfo,headblock,headfcu,newpayload,forkenv
--- a/cmd/devp2p/internal/ethtest/protocol.go
+++ b/cmd/devp2p/internal/ethtest/protocol.go
@ -1,87 +0,0 @@
-// Copyright 2023 The go-ethereum Authors
-// This file is part of go-ethereum.
-//
-// go-ethereum is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// go-ethereum is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
-package ethtest
-
-import (
-	"github.com/ethereum/go-ethereum/p2p"
-	"github.com/ethereum/go-ethereum/rlp"
-)
-
-// Unexported devp2p message codes from p2p/peer.go.
-const (
-	handshakeMsg = 0x00
-	discMsg      = 0x01
-	pingMsg      = 0x02
-	pongMsg      = 0x03
-)
-
-// Unexported devp2p protocol lengths from p2p package.
-const (
-	baseProtoLen = 16
-	ethProtoLen  = 17
-	snapProtoLen = 8
-)
-
-// Unexported handshake structure from p2p/peer.go.
-type protoHandshake struct {
-	Version    uint64
-	Name       string
-	Caps       []p2p.Cap
-	ListenPort uint64
-	ID         []byte
-	Rest       []rlp.RawValue `rlp:"tail"`
-}
-
-type Hello = protoHandshake
-
-// Proto is an enum representing devp2p protocol types.
-type Proto int
-
-const (
-	baseProto Proto = iota
-	ethProto
-	snapProto
-)
-
-// getProto returns the protocol a certain message code is associated with
-// (assuming the negotiated capabilities are exactly {eth,snap})
-func getProto(code uint64) Proto {
-	switch {
-	case code < baseProtoLen:
-		return baseProto
-	case code < baseProtoLen+ethProtoLen:
-		return ethProto
-	case code < baseProtoLen+ethProtoLen+snapProtoLen:
-		return snapProto
-	default:
-		panic("unhandled msg code beyond last protocol")
-	}
-}
-
-// protoOffset will return the offset at which the specified protocol's messages
-// begin.
-func protoOffset(proto Proto) uint64 {
-	switch proto {
-	case baseProto:
-		return 0
-	case ethProto:
-		return baseProtoLen
-	case snapProto:
-		return baseProtoLen + ethProtoLen
-	default:
-		panic("unhandled protocol")
-	}
-}
--- a/cmd/devp2p/internal/ethtest/snap.go
+++ b/cmd/devp2p/internal/ethtest/snap.go
--- a/cmd/devp2p/internal/ethtest/snapTypes.go
+++ b/cmd/devp2p/internal/ethtest/snapTypes.go
@ -0,0 +1,60 @@
+// Copyright 2022 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package ethtest
+
+import "github.com/ethereum/go-ethereum/eth/protocols/snap"
+
+// GetAccountRange represents an account range query.
+type GetAccountRange snap.GetAccountRangePacket
+
+func (msg GetAccountRange) Code() int     { return 33 }
+func (msg GetAccountRange) ReqID() uint64 { return msg.ID }
+
+type AccountRange snap.AccountRangePacket
+
+func (msg AccountRange) Code() int     { return 34 }
+func (msg AccountRange) ReqID() uint64 { return msg.ID }
+
+type GetStorageRanges snap.GetStorageRangesPacket
+
+func (msg GetStorageRanges) Code() int     { return 35 }
+func (msg GetStorageRanges) ReqID() uint64 { return msg.ID }
+
+type StorageRanges snap.StorageRangesPacket
+
+func (msg StorageRanges) Code() int     { return 36 }
+func (msg StorageRanges) ReqID() uint64 { return msg.ID }
+
+type GetByteCodes snap.GetByteCodesPacket
+
+func (msg GetByteCodes) Code() int     { return 37 }
+func (msg GetByteCodes) ReqID() uint64 { return msg.ID }
+
+type ByteCodes snap.ByteCodesPacket
+
+func (msg ByteCodes) Code() int     { return 38 }
+func (msg ByteCodes) ReqID() uint64 { return msg.ID }
+
+type GetTrieNodes snap.GetTrieNodesPacket
+
+func (msg GetTrieNodes) Code() int     { return 39 }
+func (msg GetTrieNodes) ReqID() uint64 { return msg.ID }
+
+type TrieNodes snap.TrieNodesPacket
+
+func (msg TrieNodes) Code() int     { return 40 }
+func (msg TrieNodes) ReqID() uint64 { return msg.ID }
--- a/cmd/devp2p/internal/ethtest/suite.go
+++ b/cmd/devp2p/internal/ethtest/suite.go
--- a/cmd/devp2p/internal/ethtest/suite_test.go
+++ b/cmd/devp2p/internal/ethtest/suite_test.go
@ -17,56 +17,37 @@
 package ethtest // TOFIX

 import (
-	crand "crypto/rand"
-	"fmt"
 	"os"
-	"path"
 	"testing"
 	"time"

-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/eth"
-	"github.com/ethereum/go-ethereum/eth/catalyst"
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
 	"github.com/ethereum/go-ethereum/internal/utesting"
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/p2p"
 )

-func makeJWTSecret() (string, [32]byte, error) {
-	var secret [32]byte
-	if _, err := crand.Read(secret[:]); err != nil {
-		return "", secret, fmt.Errorf("failed to create jwt secret: %v", err)
-	}
-	jwtPath := path.Join(os.TempDir(), "jwt_secret")
-	if err := os.WriteFile(jwtPath, []byte(hexutil.Encode(secret[:])), 0600); err != nil {
-		return "", secret, fmt.Errorf("failed to prepare jwt secret file: %v", err)
-	}
-	return jwtPath, secret, nil
-}
+var (
+	genesisFile   = "./testdata/genesis.json"
+	halfchainFile = "./testdata/halfchain.rlp"
+	fullchainFile = "./testdata/chain.rlp"
+)

 func TestEthSuite(t *testing.T) {
-	jwtPath, secret, err := makeJWTSecret()
-	if err != nil {
-		t.Fatalf("could not make jwt secret: %v", err)
-	}
-	geth, err := runGeth("./testdata", jwtPath)
+	geth, err := runGeth()
 	if err != nil {
 		t.Fatalf("could not run geth: %v", err)
 	}
 	defer geth.Close()

-	suite, err := NewSuite(geth.Server().Self(), "./testdata", geth.HTTPAuthEndpoint(), common.Bytes2Hex(secret[:]))
+	suite, err := NewSuite(geth.Server().Self(), fullchainFile, genesisFile)
 	if err != nil {
 		t.Fatalf("could not create new test suite: %v", err)
 	}
 	for _, test := range suite.EthTests() {
 		t.Run(test.Name, func(t *testing.T) {
-			if test.Slow && testing.Short() {
-				t.Skipf("%s: skipping in -short mode", test.Name)
-			}
-			result := utesting.RunTests([]utesting.Test{{Name: test.Name, Fn: test.Fn}}, os.Stdout)
+			result := utesting.RunTAP([]utesting.Test{{Name: test.Name, Fn: test.Fn}}, os.Stdout)
 			if result[0].Failed {
 				t.Fatal()
 			}
@ -75,23 +56,19 @@ func TestEthSuite(t *testing.T) {
 }

 func TestSnapSuite(t *testing.T) {
-	jwtPath, secret, err := makeJWTSecret()
-	if err != nil {
-		t.Fatalf("could not make jwt secret: %v", err)
-	}
-	geth, err := runGeth("./testdata", jwtPath)
+	geth, err := runGeth()
 	if err != nil {
 		t.Fatalf("could not run geth: %v", err)
 	}
 	defer geth.Close()

-	suite, err := NewSuite(geth.Server().Self(), "./testdata", geth.HTTPAuthEndpoint(), common.Bytes2Hex(secret[:]))
+	suite, err := NewSuite(geth.Server().Self(), fullchainFile, genesisFile)
 	if err != nil {
 		t.Fatalf("could not create new test suite: %v", err)
 	}
 	for _, test := range suite.SnapTests() {
 		t.Run(test.Name, func(t *testing.T) {
-			result := utesting.RunTests([]utesting.Test{{Name: test.Name, Fn: test.Fn}}, os.Stdout)
+			result := utesting.RunTAP([]utesting.Test{{Name: test.Name, Fn: test.Fn}}, os.Stdout)
 			if result[0].Failed {
 				t.Fatal()
 			}
@ -100,10 +77,8 @@ func TestSnapSuite(t *testing.T) {
 }

 // runGeth creates and starts a geth node
-func runGeth(dir string, jwtPath string) (*node.Node, error) {
+func runGeth() (*node.Node, error) {
 	stack, err := node.New(&node.Config{
-		AuthAddr: "127.0.0.1",
-		AuthPort: 0,
 		P2P: p2p.Config{
 			ListenAddr:    "127.0.0.1:0",
 			NoDiscovery:   true,
@ -111,13 +86,12 @@ func runGeth(dir string, jwtPath string) (*node.Node, error) {
 			MaxPeersPerIP: 10,
 			NoDial:        true,
 		},
-		JWTSecret: jwtPath,
 	})
 	if err != nil {
 		return nil, err
 	}

-	err = setupGeth(stack, dir)
+	err = setupGeth(stack)
 	if err != nil {
 		stack.Close()
 		return nil, err
@ -129,11 +103,12 @@ func runGeth(dir string, jwtPath string) (*node.Node, error) {
 	return stack, nil
 }

-func setupGeth(stack *node.Node, dir string) error {
-	chain, err := NewChain(dir)
+func setupGeth(stack *node.Node) error {
+	chain, err := loadChain(halfchainFile, genesisFile)
 	if err != nil {
 		return err
 	}
+
 	backend, err := eth.New(stack, &ethconfig.Config{
 		Genesis:        &chain.genesis,
 		NetworkId:      chain.genesis.Config.ChainID.Uint64(), // 19763
@ -147,9 +122,7 @@ func setupGeth(stack *node.Node, dir string) error {
 	if err != nil {
 		return err
 	}
-	if err := catalyst.Register(stack, backend); err != nil {
-		return fmt.Errorf("failed to register catalyst service: %v", err)
-	}
+
 	_, err = backend.BlockChain().InsertChain(chain.blocks[1:])
 	return err
 }
--- a/cmd/devp2p/internal/ethtest/testdata/accounts.json
+++ b/cmd/devp2p/internal/ethtest/testdata/accounts.json
@ -1,62 +0,0 @@
-{
-  "0x0c2c51a0990aee1d73c1228de158688341557508": {
-    "key": "0xbfcd0e032489319f4e5ca03e643b2025db624be6cf99cbfed90c4502e3754850"
-  },
-  "0x14e46043e63d0e3cdcf2530519f4cfaf35058cb2": {
-    "key": "0x457075f6822ac29481154792f65c5f1ec335b4fea9ca20f3fea8fa1d78a12c68"
-  },
-  "0x16c57edf7fa9d9525378b0b81bf8a3ced0620c1c": {
-    "key": "0x865898edcf43206d138c93f1bbd86311f4657b057658558888aa5ac4309626a6"
-  },
-  "0x1f4924b14f34e24159387c0a4cdbaa32f3ddb0cf": {
-    "key": "0xee7f7875d826d7443ccc5c174e38b2c436095018774248a8074ee92d8914dcdb"
-  },
-  "0x1f5bde34b4afc686f136c7a3cb6ec376f7357759": {
-    "key": "0x25e6ce8611cefb5cd338aeaa9292ed2139714668d123a4fb156cabb42051b5b7"
-  },
-  "0x2d389075be5be9f2246ad654ce152cf05990b209": {
-    "key": "0x19168cd7767604b3d19b99dc3da1302b9ccb6ee9ad61660859e07acd4a2625dd"
-  },
-  "0x3ae75c08b4c907eb63a8960c45b86e1e9ab6123c": {
-    "key": "0x71aa7d299c7607dabfc3d0e5213d612b5e4a97455b596c2f642daac43fa5eeaa"
-  },
-  "0x4340ee1b812acb40a1eb561c019c327b243b92df": {
-    "key": "0x47f666f20e2175606355acec0ea1b37870c15e5797e962340da7ad7972a537e8"
-  },
-  "0x4a0f1452281bcec5bd90c3dce6162a5995bfe9df": {
-    "key": "0xa88293fefc623644969e2ce6919fb0dbd0fd64f640293b4bf7e1a81c97e7fc7f"
-  },
-  "0x4dde844b71bcdf95512fb4dc94e84fb67b512ed8": {
-    "key": "0x6e1e16a9c15641c73bf6e237f9293ab1d4e7c12b9adf83cfc94bcf969670f72d"
-  },
-  "0x5f552da00dfb4d3749d9e62dcee3c918855a86a0": {
-    "key": "0x41be4e00aac79f7ffbb3455053ec05e971645440d594c047cdcc56a3c7458bd6"
-  },
-  "0x654aa64f5fbefb84c270ec74211b81ca8c44a72e": {
-    "key": "0xc825f31cd8792851e33a290b3d749e553983111fc1f36dfbbdb45f101973f6a9"
-  },
-  "0x717f8aa2b982bee0e29f573d31df288663e1ce16": {
-    "key": "0x8d0faa04ae0f9bc3cd4c890aa025d5f40916f4729538b19471c0beefe11d9e19"
-  },
-  "0x7435ed30a8b4aeb0877cef0c6e8cffe834eb865f": {
-    "key": "0x4552dbe6ca4699322b5d923d0c9bcdd24644f5db8bf89a085b67c6c49b8a1b91"
-  },
-  "0x83c7e323d189f18725ac510004fdc2941f8c4a78": {
-    "key": "0x34391cbbf06956bb506f45ec179cdd84df526aa364e27bbde65db9c15d866d00"
-  },
-  "0x84e75c28348fb86acea1a93a39426d7d60f4cc46": {
-    "key": "0xf6a8f1603b8368f3ca373292b7310c53bec7b508aecacd442554ebc1c5d0c856"
-  },
-  "0xc7b99a164efd027a93f147376cc7da7c67c6bbe0": {
-    "key": "0x8d56bcbcf2c1b7109e1396a28d7a0234e33544ade74ea32c460ce4a443b239b1"
-  },
-  "0xd803681e487e6ac18053afc5a6cd813c86ec3e4d": {
-    "key": "0xfc39d1c9ddbba176d806ebb42d7460189fe56ca163ad3eb6143bfc6beb6f6f72"
-  },
-  "0xe7d13f7aa2a838d24c59b40186a0aca1e21cffcc": {
-    "key": "0x9ee3fd550664b246ad7cdba07162dd25530a3b1d51476dd1d85bbc29f0592684"
-  },
-  "0xeda8645ba6948855e3b3cd596bbb07596d59c603": {
-    "key": "0x14cdde09d1640eb8c3cda063891b0453073f57719583381ff78811efa6d4199f"
-  }
-}
--- a/cmd/devp2p/internal/ethtest/testdata/chain.rlp
+++ b/cmd/devp2p/internal/ethtest/testdata/chain.rlp
--- a/cmd/devp2p/internal/ethtest/testdata/forkenv.json
+++ b/cmd/devp2p/internal/ethtest/testdata/forkenv.json
@ -1,20 +0,0 @@
-{
-  "HIVE_CANCUN_TIMESTAMP": "840",
-  "HIVE_CHAIN_ID": "3503995874084926",
-  "HIVE_FORK_ARROW_GLACIER": "60",
-  "HIVE_FORK_BERLIN": "48",
-  "HIVE_FORK_BYZANTIUM": "18",
-  "HIVE_FORK_CONSTANTINOPLE": "24",
-  "HIVE_FORK_GRAY_GLACIER": "66",
-  "HIVE_FORK_HOMESTEAD": "0",
-  "HIVE_FORK_ISTANBUL": "36",
-  "HIVE_FORK_LONDON": "54",
-  "HIVE_FORK_MUIR_GLACIER": "42",
-  "HIVE_FORK_PETERSBURG": "30",
-  "HIVE_FORK_SPURIOUS": "12",
-  "HIVE_FORK_TANGERINE": "6",
-  "HIVE_MERGE_BLOCK_ID": "72",
-  "HIVE_NETWORK_ID": "3503995874084926",
-  "HIVE_SHANGHAI_TIMESTAMP": "780",
-  "HIVE_TERMINAL_TOTAL_DIFFICULTY": "9454784"
-}
--- a/cmd/devp2p/internal/ethtest/testdata/genesis.json
+++ b/cmd/devp2p/internal/ethtest/testdata/genesis.json
@ -1,112 +1,27 @@
 {
-  "config": {
-    "chainId": 3503995874084926,
-    "homesteadBlock": 0,
-    "eip150Block": 6,
-    "eip155Block": 12,
-    "eip158Block": 12,
-    "byzantiumBlock": 18,
-    "constantinopleBlock": 24,
-    "petersburgBlock": 30,
-    "istanbulBlock": 36,
-    "muirGlacierBlock": 42,
-    "berlinBlock": 48,
-    "londonBlock": 54,
-    "arrowGlacierBlock": 60,
-    "grayGlacierBlock": 66,
-    "mergeNetsplitBlock": 72,
-    "shanghaiTime": 780,
-    "cancunTime": 840,
-    "terminalTotalDifficulty": 9454784,
-    "terminalTotalDifficultyPassed": true,
-    "ethash": {}
-  },
-  "nonce": "0x0",
-  "timestamp": "0x0",
-  "extraData": "0x68697665636861696e",
-  "gasLimit": "0x23f3e20",
-  "difficulty": "0x20000",
-  "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
-  "coinbase": "0x0000000000000000000000000000000000000000",
-  "alloc": {
-    "000f3df6d732807ef1319fb7b8bb8522d0beac02": {
-      "code": "0x3373fffffffffffffffffffffffffffffffffffffffe14604d57602036146024575f5ffd5b5f35801560495762001fff810690815414603c575f5ffd5b62001fff01545f5260205ff35b5f5ffd5b62001fff42064281555f359062001fff015500",
-      "balance": "0x2a"
+    "config": {
+        "chainId": 19763,
+        "homesteadBlock": 0,
+        "eip150Block": 0,
+        "eip155Block": 0,
+        "eip158Block": 0,
+        "byzantiumBlock": 0,
+        "terminalTotalDifficultyPassed": true,
+        "ethash": {}
    },
-    "0c2c51a0990aee1d73c1228de158688341557508": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
+    "nonce": "0xdeadbeefdeadbeef",
+    "timestamp": "0x0",
+    "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "gasLimit": "0x80000000",
+    "difficulty": "0x20000",
+    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "coinbase": "0x0000000000000000000000000000000000000000",
+    "alloc": {
+        "71562b71999873db5b286df957af199ec94617f7": {
+            "balance": "0xffffffffffffffffffffffffff"
+        }
    },
-    "14e46043e63d0e3cdcf2530519f4cfaf35058cb2": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "16c57edf7fa9d9525378b0b81bf8a3ced0620c1c": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "1f4924b14f34e24159387c0a4cdbaa32f3ddb0cf": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "1f5bde34b4afc686f136c7a3cb6ec376f7357759": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "2d389075be5be9f2246ad654ce152cf05990b209": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "3ae75c08b4c907eb63a8960c45b86e1e9ab6123c": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "4340ee1b812acb40a1eb561c019c327b243b92df": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "4a0f1452281bcec5bd90c3dce6162a5995bfe9df": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "4dde844b71bcdf95512fb4dc94e84fb67b512ed8": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "5f552da00dfb4d3749d9e62dcee3c918855a86a0": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "654aa64f5fbefb84c270ec74211b81ca8c44a72e": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "717f8aa2b982bee0e29f573d31df288663e1ce16": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "7435ed30a8b4aeb0877cef0c6e8cffe834eb865f": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "83c7e323d189f18725ac510004fdc2941f8c4a78": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "84e75c28348fb86acea1a93a39426d7d60f4cc46": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "8bebc8ba651aee624937e7d897853ac30c95a067": {
-      "storage": {
-        "0x0000000000000000000000000000000000000000000000000000000000000001": "0x0000000000000000000000000000000000000000000000000000000000000001",
-        "0x0000000000000000000000000000000000000000000000000000000000000002": "0x0000000000000000000000000000000000000000000000000000000000000002",
-        "0x0000000000000000000000000000000000000000000000000000000000000003": "0x0000000000000000000000000000000000000000000000000000000000000003"
-      },
-      "balance": "0x1",
-      "nonce": "0x1"
-    },
-    "c7b99a164efd027a93f147376cc7da7c67c6bbe0": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "d803681e487e6ac18053afc5a6cd813c86ec3e4d": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "e7d13f7aa2a838d24c59b40186a0aca1e21cffcc": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    },
-    "eda8645ba6948855e3b3cd596bbb07596d59c603": {
-      "balance": "0xc097ce7bc90715b34b9f1000000000"
-    }
-  },
-  "number": "0x0",
-  "gasUsed": "0x0",
-  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
-  "baseFeePerGas": null,
-  "excessBlobGas": null,
-  "blobGasUsed": null
+    "number": "0x0",
+    "gasUsed": "0x0",
+    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
 }
--- a/cmd/devp2p/internal/ethtest/testdata/halfchain.rlp
+++ b/cmd/devp2p/internal/ethtest/testdata/halfchain.rlp
--- a/Show More
+++ b/Show More