initial version

utils: add GetTopAddr to analyse large traffic (#2629 )
Makefile: use docker compose v2 instead of v1 (#2628 )
2024-08-07 10:23:51 +08:00 · 2024-08-05 16:48:33 +08:00 · 2024-08-05 15:15:46 +08:00 · 2024-07-31 16:39:24 +08:00 · 2024-07-31 16:37:50 +08:00 · 2024-07-31 15:50:43 +08:00
64 changed files with 1503 additions and 353 deletions
--- a/8
+++ b/8
@@ -29,11 +29,11 @@ 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.
--- a/cmd/extradump/extradump_test.go
+++ b/cmd/extradump/extradump_test.go
@@ -43,7 +43,42 @@ func TestExtraParse(t *testing.T) {
 		}
 	}

-	// case 3, |---Extra Vanity---|---Empty---|---Vote Attestation---|---Extra Seal---|
+	// case 3, |---Extra Vanity---|---Validators Number and Validators Bytes---|---Turn Length---|---Empty---|---Extra Seal---|
+	{
+		extraData := "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"
+		extra, err := parseExtra(extraData)
+		assert.NoError(t, err)
+		{
+			var have = extra.ValidatorSize
+			var want = uint8(21)
+			if have != want {
+				t.Fatalf("extra.ValidatorSize mismatch, have %d, want %d", have, want)
+			}
+		}
+		{
+			var have = common.Bytes2Hex(extra.Validators[14].Address[:])
+			var want = "cc8e6d00c17eb431350c6c50d8b8f05176b90b11"
+			if have != want {
+				t.Fatalf("extra.Validators[14].Address mismatch, have %s, want %s", have, want)
+			}
+		}
+		{
+			var have = common.Bytes2Hex(extra.Validators[18].BLSPublicKey[:])
+			var want = "b2d4c6283c44a1c7bd503aaba7666e9f0c830e0ff016c1c750a5e48757a713d0836b1cabfd5c281b1de3b77d1c192183"
+			if have != want {
+				t.Fatalf("extra.Validators[18].BLSPublicKey mismatch, have %s, want %s", have, want)
+			}
+		}
+		{
+			var have = extra.TurnLength
+			var want = uint8(4)
+			if *have != want {
+				t.Fatalf("extra.TurnLength mismatch, have %d, want %d", *have, want)
+			}
+		}
+	}
+
+	// case 4, |---Extra Vanity---|---Empty---|---Vote Attestation---|---Extra Seal---|
 	{
 		extraData := "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"
 		extra, err := parseExtra(extraData)
@@ -64,9 +99,9 @@ func TestExtraParse(t *testing.T) {
 		}
 	}

-	// case 4, |---Extra Vanity---|---Validators Number and Validators Bytes---|---Vote Attestation---|---Extra Seal---|
+	// case 5, |---Extra Vanity---|---Validators Number and Validators Bytes---|---Vote Attestation---|---Extra Seal---|
 	{
-		extraData := "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"
+		extraData := "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"
 		extra, err := parseExtra(extraData)
 		assert.NoError(t, err)
 		{
@@ -105,4 +140,53 @@ func TestExtraParse(t *testing.T) {
 			}
 		}
 	}
+
+	// case 6, |---Extra Vanity---|---Validators Number and Validators Bytes---|---Turn Length---|---Vote Attestation---|---Extra Seal---|
+	{
+		extraData := "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"
+		extra, err := parseExtra(extraData)
+		assert.NoError(t, err)
+		{
+			var have = common.Bytes2Hex(extra.Validators[0].Address[:])
+			var want = "1284214b9b9c85549ab3d2b972df0deef66ac2c9"
+			if have != want {
+				t.Fatalf("extra.Validators[0].Address mismatch, have %s, want %s", have, want)
+			}
+		}
+		{
+			var have = common.Bytes2Hex(extra.Validators[0].BLSPublicKey[:])
+			var want = "8e82934ca974fdcd97f3309de967d3c9c43fa711a8d673af5d75465844bf8969c8d1948d903748ac7b8b1720fa64e50c"
+			if have != want {
+				t.Fatalf("extra.Validators[0].BLSPublicKey mismatch, have %s, want %s", have, want)
+			}
+		}
+		{
+			var have = extra.Validators[0].VoteIncluded
+			var want = true
+			if have != want {
+				t.Fatalf("extra.Validators[0].VoteIncluded mismatch, have %t, want %t", have, want)
+			}
+		}
+		{
+			var have = common.Bytes2Hex(extra.Data.TargetHash[:])
+			var want = "0edc71ce80105a3220a87bea2792fa340d66c59002f02b0a09349ed1ed284070"
+			if have != want {
+				t.Fatalf("extra.Data.TargetHash mismatch, have %s, want %s", have, want)
+			}
+		}
+		{
+			var have = extra.Data.TargetNumber
+			var want = uint64(32096999)
+			if have != want {
+				t.Fatalf("extra.Data.TargetNumber mismatch, have %d, want %d", have, want)
+			}
+		}
+		{
+			var have = extra.TurnLength
+			var want = uint8(4)
+			if *have != want {
+				t.Fatalf("extra.TurnLength mismatch, have %d, want %d", *have, want)
+			}
+		}
+	}
 }
--- a/cmd/extradump/main.go
+++ b/cmd/extradump/main.go
@@ -24,7 +24,7 @@ const (
 	BLSPublicKeyLength = 48

 	// follow order in extra field
-	// |---Extra Vanity---|---Validators Number and Validators Bytes (or Empty)---|---Vote Attestation (or Empty)---|---Extra Seal---|
+	// |---Extra Vanity---|---Validators Number and Validators Bytes (or Empty)---|---Turn Length (or Empty)---|---Vote Attestation (or Empty)---|---Extra Seal---|
 	extraVanityLength    = 32 // Fixed number of extra-data prefix bytes reserved for signer vanity
 	validatorNumberSize  = 1  // Fixed number of extra prefix bytes reserved for validator number after Luban
 	validatorBytesLength = common.AddressLength + types.BLSPublicKeyLength
@@ -35,6 +35,7 @@ type Extra struct {
 	ExtraVanity   string
 	ValidatorSize uint8
 	Validators    validatorsAscending
+	TurnLength    *uint8
 	*types.VoteAttestation
 	ExtraSeal []byte
 }
@@ -113,6 +114,15 @@ func parseExtra(hexData string) (*Extra, error) {
 			sort.Sort(extra.Validators)
 			data = data[validatorBytesTotalLength-validatorNumberSize:]
 			dataLength = len(data)
+
+			// parse TurnLength
+			if dataLength > 0 {
+				if data[0] != '\xf8' {
+					extra.TurnLength = &data[0]
+					data = data[1:]
+					dataLength = len(data)
+				}
+			}
 		}

 		// parse Vote Attestation
@@ -148,6 +158,10 @@ func prettyExtra(extra Extra) {
 		}
 	}

+	if extra.TurnLength != nil {
+		fmt.Printf("TurnLength	:	%d\n", *extra.TurnLength)
+	}
+
 	if extra.VoteAttestation != nil {
 		fmt.Printf("Attestation	:\n")
 		fmt.Printf("\tVoteAddressSet	:	%b,	%d\n", extra.VoteAddressSet, bitset.From([]uint64{uint64(extra.VoteAddressSet)}).Count())
--- a/cmd/faucet/faucet.go
+++ b/cmd/faucet/faucet.go
@@ -49,6 +49,7 @@ import (
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/gorilla/websocket"
+	"golang.org/x/time/rate"
 )

 var (
@@ -216,6 +217,8 @@ type faucet struct {

 	bep2eInfos map[string]bep2eInfo
 	bep2eAbi   abi.ABI
+
+	limiter *IPRateLimiter
 }

 // wsConn wraps a websocket connection with a write mutex as the underlying
@@ -235,6 +238,12 @@ func newFaucet(genesis *core.Genesis, url string, ks *keystore.KeyStore, index [
 		return nil, err
 	}

+	// Allow 1 request per minute with burst of 5, and cache up to 1000 IPs
+	limiter, err := NewIPRateLimiter(rate.Limit(1.0), 5, 1000)
+	if err != nil {
+		return nil, err
+	}
+
 	return &faucet{
 		config:     genesis.Config,
 		client:     client,
@@ -245,6 +254,7 @@ func newFaucet(genesis *core.Genesis, url string, ks *keystore.KeyStore, index [
 		update:     make(chan struct{}, 1),
 		bep2eInfos: bep2eInfos,
 		bep2eAbi:   bep2eAbi,
+		limiter:    limiter,
 	}, nil
 }

@@ -272,6 +282,20 @@ func (f *faucet) webHandler(w http.ResponseWriter, r *http.Request) {

 // apiHandler handles requests for Ether grants and transaction statuses.
 func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) {
+	ip := r.RemoteAddr
+	if len(r.Header.Get("X-Forwarded-For")) > 0 {
+		ips := strings.Split(r.Header.Get("X-Forwarded-For"), ",")
+		if len(ips) > 0 {
+			ip = strings.TrimSpace(ips[len(ips)-1])
+		}
+	}
+
+	if !f.limiter.GetLimiter(ip).Allow() {
+		log.Warn("Too many requests from client: ", "client", ip)
+		http.Error(w, "Too many requests", http.StatusTooManyRequests)
+		return
+	}
+
 	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
 	conn, err := upgrader.Upgrade(w, r, nil)
 	if err != nil {
@@ -625,19 +649,22 @@ func (f *faucet) loop() {
 			balance := new(big.Int).Div(f.balance, ether)

 			for _, conn := range f.conns {
-				if err := send(conn, map[string]interface{}{
-					"funds":    balance,
-					"funded":   f.nonce,
-					"requests": f.reqs,
-				}, time.Second); err != nil {
-					log.Warn("Failed to send stats to client", "err", err)
-					conn.conn.Close()
-					continue
-				}
-				if err := send(conn, head, time.Second); err != nil {
-					log.Warn("Failed to send header to client", "err", err)
-					conn.conn.Close()
-				}
+				go func(conn *wsConn) {
+					if err := send(conn, map[string]interface{}{
+						"funds":    balance,
+						"funded":   f.nonce,
+						"requests": f.reqs,
+					}, time.Second); err != nil {
+						log.Warn("Failed to send stats to client", "err", err)
+						conn.conn.Close()
+						return // Exit the goroutine if the first send fails
+					}
+
+					if err := send(conn, head, time.Second); err != nil {
+						log.Warn("Failed to send header to client", "err", err)
+						conn.conn.Close()
+					}
+				}(conn)
 			}
 			f.lock.RUnlock()
 		}
@@ -656,10 +683,12 @@ func (f *faucet) loop() {
 			// Pending requests updated, stream to clients
 			f.lock.RLock()
 			for _, conn := range f.conns {
-				if err := send(conn, map[string]interface{}{"requests": f.reqs}, time.Second); err != nil {
-					log.Warn("Failed to send requests to client", "err", err)
-					conn.conn.Close()
-				}
+				go func(conn *wsConn) {
+					if err := send(conn, map[string]interface{}{"requests": f.reqs}, time.Second); err != nil {
+						log.Warn("Failed to send requests to client", "err", err)
+						conn.conn.Close()
+					}
+				}(conn)
 			}
 			f.lock.RUnlock()
 		}
--- a/cmd/faucet/rate_limiter.go
+++ b/cmd/faucet/rate_limiter.go
@@ -0,0 +1,44 @@
+package main
+
+import (
+	lru "github.com/hashicorp/golang-lru"
+	"golang.org/x/time/rate"
+)
+
+type IPRateLimiter struct {
+	ips *lru.Cache // LRU cache to store IP addresses and their associated rate limiters
+	r   rate.Limit // the rate limit, e.g., 5 requests per second
+	b   int        // the burst size, e.g., allowing a burst of 10 requests at once. The rate limiter gets into action
+	// only after this number exceeds
+}
+
+func NewIPRateLimiter(r rate.Limit, b int, size int) (*IPRateLimiter, error) {
+	cache, err := lru.New(size)
+	if err != nil {
+		return nil, err
+	}
+
+	i := &IPRateLimiter{
+		ips: cache,
+		r:   r,
+		b:   b,
+	}
+
+	return i, nil
+}
+
+func (i *IPRateLimiter) addIP(ip string) *rate.Limiter {
+	limiter := rate.NewLimiter(i.r, i.b)
+
+	i.ips.Add(ip, limiter)
+
+	return limiter
+}
+
+func (i *IPRateLimiter) GetLimiter(ip string) *rate.Limiter {
+	if limiter, exists := i.ips.Get(ip); exists {
+		return limiter.(*rate.Limiter)
+	}
+
+	return i.addIP(ip)
+}
--- a/cmd/geth/chaincmd.go
+++ b/cmd/geth/chaincmd.go
@@ -62,6 +62,7 @@ var (
 		ArgsUsage: "<genesisPath>",
 		Flags: flags.Merge([]cli.Flag{
 			utils.CachePreimagesFlag,
+			utils.OverridePassedForkTime,
 			utils.OverrideBohr,
 			utils.OverrideVerkle,
 			utils.MultiDataBaseFlag,
@@ -253,6 +254,10 @@ func initGenesis(ctx *cli.Context) error {
 	defer stack.Close()

 	var overrides core.ChainOverrides
+	if ctx.IsSet(utils.OverridePassedForkTime.Name) {
+		v := ctx.Uint64(utils.OverridePassedForkTime.Name)
+		overrides.OverridePassedForkTime = &v
+	}
 	if ctx.IsSet(utils.OverrideBohr.Name) {
 		v := ctx.Uint64(utils.OverrideBohr.Name)
 		overrides.OverrideBohr = &v
--- a/cmd/geth/config.go
+++ b/cmd/geth/config.go
@@ -185,6 +185,10 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 		params.RialtoGenesisHash = common.HexToHash(v)
 	}

+	if ctx.IsSet(utils.OverridePassedForkTime.Name) {
+		v := ctx.Uint64(utils.OverridePassedForkTime.Name)
+		cfg.Eth.OverridePassedForkTime = &v
+	}
 	if ctx.IsSet(utils.OverrideBohr.Name) {
 		v := ctx.Uint64(utils.OverrideBohr.Name)
 		cfg.Eth.OverrideBohr = &v
@@ -206,6 +210,9 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 	if ctx.IsSet(utils.OverrideBreatheBlockInterval.Name) {
 		params.BreatheBlockInterval = ctx.Uint64(utils.OverrideBreatheBlockInterval.Name)
 	}
+	if ctx.IsSet(utils.OverrideFixedTurnLength.Name) {
+		params.FixedTurnLength = ctx.Uint64(utils.OverrideFixedTurnLength.Name)
+	}

 	backend, eth := utils.RegisterEthService(stack, &cfg.Eth)

--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -72,12 +72,14 @@ var (
 		utils.USBFlag,
 		utils.SmartCardDaemonPathFlag,
 		utils.RialtoHash,
+		utils.OverridePassedForkTime,
 		utils.OverrideBohr,
 		utils.OverrideVerkle,
 		utils.OverrideFullImmutabilityThreshold,
 		utils.OverrideMinBlocksForBlobRequests,
 		utils.OverrideDefaultExtraReserveForBlobRequests,
 		utils.OverrideBreatheBlockInterval,
+		utils.OverrideFixedTurnLength,
 		utils.EnablePersonal,
 		utils.TxPoolLocalsFlag,
 		utils.TxPoolNoLocalsFlag,
--- a/cmd/jsutils/README.md
+++ b/cmd/jsutils/README.md
@@ -33,7 +33,7 @@ node get_perf.js --rpc ${url} --startNum ${start} --endNum ${end}
 output as following
 ```bash
 Get the performance between [ 19470 , 19670 )
-txCountPerBlock = 3142.81 txCountTotal = 628562 BlockCount = 200 avgBlockTime = 3.005 inturnBlocksRatio = 0.975
+txCountPerBlock = 3142.81 txCountTotal = 628562 BlockCount = 200 avgBlockTime = 3.005 inturnBlocksRatio = 0.975 justifiedBlocksRatio = 0.98
 txCountPerSecond = 1045.8602329450914 avgGasUsedPerBlock = 250.02062627 avgGasUsedPerSecond =  83.20153952412646
 ```

--- a/cmd/jsutils/get_perf.js
+++ b/cmd/jsutils/get_perf.js
@@ -12,6 +12,9 @@ const main = async () => {
    let txCountTotal = 0;
    let gasUsedTotal = 0;
    let inturnBlocks = 0;
+    let justifiedBlocks = 0;
+    let turnLength = await provider.send("parlia_getTurnLength", [
+        ethers.toQuantity(program.startNum)]);
    for (let i = program.startNum; i < program.endNum; i++) {
        let txCount = await provider.send("eth_getBlockTransactionCountByNumber", [
            ethers.toQuantity(i)]);
@@ -26,7 +29,15 @@ const main = async () => {
            inturnBlocks += 1
        }
        let timestamp = eval(eval(header.timestamp).toString(10))
-        console.log("BlockNumber =", i, "mod =", i%4, "miner =", header.miner , "difficulty =", difficulty, "txCount =", ethers.toNumber(txCount), "gasUsed", gasUsed, "timestamp", timestamp)
+
+        let justifiedNumber = await provider.send("parlia_getJustifiedNumber", [
+            ethers.toQuantity(i)]);
+        if (justifiedNumber + 1 == i) {
+            justifiedBlocks += 1
+        } else {
+            console.log("justified unexpected", "BlockNumber =", i,"justifiedNumber",justifiedNumber)    
+        }
+        console.log("BlockNumber =", i, "mod =", i%turnLength, "miner =", header.miner , "difficulty =", difficulty, "txCount =", ethers.toNumber(txCount), "gasUsed", gasUsed, "timestamp", timestamp)
    }

    let blockCount = program.endNum - program.startNum
@@ -41,13 +52,14 @@ const main = async () => {
    let timeCost = endTime - startTime
    let avgBlockTime = timeCost/blockCount
    let inturnBlocksRatio = inturnBlocks/blockCount
+    let justifiedBlocksRatio = justifiedBlocks/blockCount
    let tps = txCountTotal/timeCost
    let M = 1000000
    let avgGasUsedPerBlock = gasUsedTotal/blockCount/M
    let avgGasUsedPerSecond = gasUsedTotal/timeCost/M

    console.log("Get the performance between [", program.startNum, ",", program.endNum, ")");
-    console.log("txCountPerBlock =", txCountPerBlock, "txCountTotal =", txCountTotal, "BlockCount =", blockCount, "avgBlockTime =", avgBlockTime, "inturnBlocksRatio =", inturnBlocksRatio);
+    console.log("txCountPerBlock =", txCountPerBlock, "txCountTotal =", txCountTotal, "BlockCount =", blockCount, "avgBlockTime =", avgBlockTime, "inturnBlocksRatio =", inturnBlocksRatio, "justifiedBlocksRatio =", justifiedBlocksRatio);
    console.log("txCountPerSecond =", tps, "avgGasUsedPerBlock =", avgGasUsedPerBlock, "avgGasUsedPerSecond =", avgGasUsedPerSecond);
 };

--- a/cmd/jsutils/getchainstatus.js
+++ b/cmd/jsutils/getchainstatus.js
@@ -0,0 +1,164 @@
+import { ethers } from "ethers";
+import program from "commander";
+
+// Global Options:
+program.option("--rpc <rpc>", "Rpc");
+// GetTxCount Options:
+program.option("--startNum <startNum>", "start num")
+program.option("--endNum <endNum>", "end num")
+program.option("--miner <miner>", "miner", "")
+// GetVersion Options:
+program.option("--num <Num>", "validator num", 21)
+// GetTopAddr Options:
+program.option("--topNum <Num>", "top num of address to be displayed", 20)
+
+program.parse(process.argv);
+
+const provider = new ethers.JsonRpcProvider(program.rpc)
+
+function printUsage() {
+    console.log("Usage:");
+    console.log("  node getchainstatus.js --help");
+    console.log("  node getchainstatus.js [subcommand] [options]");
+    console.log("\nSubcommands:");
+    console.log("  GetTxCount: find the block with max tx size of a range");
+    console.log("  GetVersion: dump validators' binary version, based on Header.Extra");
+    console.log("  GetTopAddr: get hottest $topNum target address within a block range");
+    console.log("\nOptions:");
+    console.log("  --rpc       specify the url of RPC endpoint");
+    console.log("  --startNum  the start block number, for command GetTxCount");
+    console.log("  --endNum    the end block number, for command GetTxCount");
+    console.log("  --miner     the miner address, for command GetTxCount");
+    console.log("  --num       the number of blocks to be checked, for command GetVersion");
+    console.log("  --topNum    the topNum of blocks to be checked, for command GetVersion");
+    console.log("\nExample:");
+    // mainnet https://bsc-mainnet.nodereal.io/v1/454e504917db4f82b756bd0cf6317dce
+    console.log("  node getchainstatus.js GetTxCount --rpc https://bsc-testnet-dataseed.bnbchain.org --startNum 40000001  --endNum 40000005")
+    console.log("  node getchainstatus.js GetVersion --rpc https://bsc-testnet-dataseed.bnbchain.org --num 21")
+    console.log("  node getchainstatus.js GetTopAddr --rpc https://bsc-testnet-dataseed.bnbchain.org --startNum 40000001  --endNum 40000010 --topNum 10")
+}
+
+// 1.cmd: "GetTxCount", usage:
+// node getchainstatus.js GetTxCount --rpc https://bsc-testnet-dataseed.bnbchain.org \
+//      --startNum 40000001  --endNum 40000005 \
+//      --miner(optional): specified: find the max txCounter from the specified validator,
+//                         not specified: find the max txCounter from all validators
+async function getTxCount()  {
+    let txCount = 0;
+    let num = 0;
+    console.log("Find the max txs count between", program.startNum, "and", program.endNum);
+    for (let i = program.startNum; i < program.endNum; i++) {
+        if (program.miner !== "") {
+            let blockData = await provider.getBlock(Number(i))
+            if (program.miner !== blockData.miner) {
+                continue
+            }
+        }
+        let x = await provider.send("eth_getBlockTransactionCountByNumber", [
+            ethers.toQuantity(i)]);
+        let a = ethers.toNumber(x)
+        if (a > txCount) {
+            num = i;
+            txCount = a;
+        }
+    }
+    console.log("BlockNum = ", num, "TxCount =", txCount);
+}
+
+// 2.cmd: "GetVersion", usage:
+// node getchainstatus.js GetVersion \
+//      --rpc https://bsc-testnet-dataseed.bnbchain.org \
+//       --num(optional): defualt 21, the number of blocks that will be checked
+async function getBinaryVersion()  {
+    const blockNum = await provider.getBlockNumber();
+    console.log(blockNum);
+    for (let i = 0; i < program.num; i++) {
+        let blockData = await provider.getBlock(blockNum - i);
+        // 1.get Geth client version
+        let major = ethers.toNumber(ethers.dataSlice(blockData.extraData, 2, 3))
+        let minor = ethers.toNumber(ethers.dataSlice(blockData.extraData, 3, 4))
+        let patch = ethers.toNumber(ethers.dataSlice(blockData.extraData, 4, 5))
+
+        // 2.get minimum txGasPrice based on the last non-zero-gasprice transaction
+        let lastGasPrice = 0
+        for  (let txIndex = blockData.transactions.length - 1; txIndex >= 0; txIndex--) {
+            let txHash = blockData.transactions[txIndex]
+            let txData =  await provider.getTransaction(txHash);
+            if (txData.gasPrice == 0) {
+                continue
+            }
+            lastGasPrice = txData.gasPrice
+            break
+        }
+        console.log(blockData.miner, "version =", major + "." + minor + "." + patch, " MinGasPrice = " + lastGasPrice)
+    }
+};
+
+// 3.cmd: "GetTopAddr", usage:
+// node getchainstatus.js GetTopAddr \
+//      --rpc https://bsc-testnet-dataseed.bnbchain.org \
+//      --startNum 40000001  --endNum 40000005 \
+//      --topNum(optional): the top num of address to be displayed, default 20
+function getTopKElements(map, k) {
+    let entries = Array.from(map.entries());
+    entries.sort((a, b) => b[1] - a[1]);
+    return entries.slice(0, k);
+}
+
+async function getTopAddr()  {
+    let countMap = new Map();
+    let totalTxs = 0
+    console.log("Find the top target address, between", program.startNum, "and", program.endNum);
+    for (let i = program.startNum; i <= program.endNum; i++) {
+        let blockData = await provider.getBlock(Number(i), true)
+        totalTxs += blockData.transactions.length
+        for  (let txIndex = blockData.transactions.length - 1; txIndex >= 0; txIndex--) {
+            let txData = await blockData.getTransaction(txIndex)
+            if (txData.to == null) {
+                console.log("Contract creation,txHash:", txData.hash)
+                continue
+            }
+            let toAddr = txData.to;
+            if (countMap.has(toAddr)) {
+                countMap.set(toAddr, countMap.get(toAddr) + 1);
+            } else {
+                countMap.set(toAddr, 1);
+            }
+        }
+        console.log("progress:", (program.endNum-i), "blocks left", "totalTxs", totalTxs)
+    }
+    let tops = getTopKElements(countMap, program.topNum)
+    tops.forEach((value, key) => {
+        // value: [ '0x40661F989826CC641Ce1601526Bb16a4221412c8', 71 ]
+        console.log(key+":", value[0], " ", value[1], " ", ((value[1]*100)/totalTxs).toFixed(2)+"%");
+      });
+};
+
+const main = async () => {
+    if (process.argv.length <= 2) {
+        console.error('invalid process.argv.length', process.argv.length);
+        printUsage()
+        return
+    }
+    const cmd =  process.argv[2]
+    if (cmd === "--help") {
+        printUsage()
+        return
+    }
+    if (cmd === "GetTxCount") {
+        await getTxCount()
+    } else if (cmd === "GetVersion") {
+        await getBinaryVersion()
+    } else if (cmd === "GetTopAddr") {
+        await getTopAddr()
+    } else {
+        console.log("unsupported cmd", cmd);
+        printUsage()
+    }
+}
+
+main().then(() => process.exit(0))
+    .catch((error) => {
+        console.error(error);
+        process.exit(1);
+    });
--- a/cmd/jsutils/gettxcount.js
+++ b/cmd/jsutils/gettxcount.js
@@ -1,41 +0,0 @@
-import { ethers } from "ethers";
-import program from "commander";
-
-program.option("--rpc <rpc>", "Rpc");
-program.option("--startNum <startNum>", "start num")
-program.option("--endNum <endNum>", "end num")
-// --miner:
-//   specified: find the max txCounter from the specified validator
-//   not specified: find the max txCounter from all validators
-program.option("--miner <miner>", "miner", "")
-program.parse(process.argv);
-
-const provider = new ethers.JsonRpcProvider(program.rpc)
-
-const main = async () => {
-    let txCount = 0;
-    let num = 0;
-    console.log("Find the max txs count between", program.startNum, "and", program.endNum);
-    for (let i = program.startNum; i < program.endNum; i++) {
-        if (program.miner !== "") {
-            let blockData = await provider.getBlock(Number(i))
-            if (program.miner !== blockData.miner) {
-                continue
-            }
-        }
-        let x = await provider.send("eth_getBlockTransactionCountByNumber", [
-            ethers.toQuantity(i)]);
-        let a = ethers.toNumber(x)
-        if (a > txCount) {
-            num = i;
-            txCount = a;
-        }
-    }
-    console.log("BlockNum = ", num, "TxCount =", txCount);
-};
-
-main().then(() => process.exit(0))
-    .catch((error) => {
-        console.error(error);
-        process.exit(1);
-    });
--- a/cmd/jsutils/getvalidatorversion.js
+++ b/cmd/jsutils/getvalidatorversion.js
@@ -1,38 +0,0 @@
-import { ethers } from "ethers";
-import program from "commander";
-
-program.option("--Rpc <Rpc>", "Rpc");
-program.option("--Num <Num>", "validator num", 21)
-program.parse(process.argv);
-
-const provider = new ethers.JsonRpcProvider(program.Rpc);
-
-const main = async () => {
-    const blockNum = await provider.getBlockNumber();
-    console.log(blockNum);
-    for (let i = 0; i < program.Num; i++) {
-        let blockData = await provider.getBlock(blockNum - i);
-        // 1.get Geth client version
-        let major = ethers.toNumber(ethers.dataSlice(blockData.extraData, 2, 3))
-        let minor = ethers.toNumber(ethers.dataSlice(blockData.extraData, 3, 4))
-        let patch = ethers.toNumber(ethers.dataSlice(blockData.extraData, 4, 5))
-
-        // 2.get minimum txGasPrice based on the last non-zero-gasprice transaction
-        let lastGasPrice = 0
-        for  (let txIndex = blockData.transactions.length - 1; txIndex >= 0; txIndex--) {
-            let txHash = blockData.transactions[txIndex]
-            let txData =  await provider.getTransaction(txHash);
-            if (txData.gasPrice == 0) {
-                continue
-            }
-            lastGasPrice = txData.gasPrice
-            break
-        }
-        console.log(blockData.miner, "version =", major + "." + minor + "." + patch, " MinGasPrice = " + lastGasPrice)
-    }
-};
-main().then(() => process.exit(0))
-    .catch((error) => {
-        console.error(error);
-        process.exit(1);
-    });
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -305,6 +305,11 @@ var (
 		Usage:    "Manually specify the Rialto Genesis Hash, to trigger builtin network logic",
 		Category: flags.EthCategory,
 	}
+	OverridePassedForkTime = &cli.Uint64Flag{
+		Name:     "override.passedforktime",
+		Usage:    "Manually specify the hard fork timestamp except the last one, overriding the bundled setting",
+		Category: flags.EthCategory,
+	}
 	OverrideBohr = &cli.Uint64Flag{
 		Name:     "override.bohr",
 		Usage:    "Manually specify the Bohr fork timestamp, overriding the bundled setting",
@@ -339,6 +344,12 @@ var (
 		Value:    params.BreatheBlockInterval,
 		Category: flags.EthCategory,
 	}
+	OverrideFixedTurnLength = &cli.Uint64Flag{
+		Name:     "override.fixedturnlength",
+		Usage:    "It use fixed or random values for turn length instead of reading from the contract, only for testing purpose",
+		Value:    params.FixedTurnLength,
+		Category: flags.EthCategory,
+	}
 	SyncModeFlag = &flags.TextMarshalerFlag{
 		Name:     "syncmode",
 		Usage:    `Blockchain sync mode ("snap" or "full")`,
--- a/consensus/consensus.go
+++ b/consensus/consensus.go
@@ -59,6 +59,9 @@ type ChainHeaderReader interface {
 	// GetHighestVerifiedHeader retrieves the highest header verified.
 	GetHighestVerifiedHeader() *types.Header

+	// GetVerifiedBlockByHash retrieves the highest verified block.
+	GetVerifiedBlockByHash(hash common.Hash) *types.Header
+
 	// ChasingHead return the best chain head of peers.
 	ChasingHead() *types.Header
 }
--- a/consensus/parlia/abi.go
+++ b/consensus/parlia/abi.go
@@ -2306,6 +2306,19 @@ const validatorSetABI = `
    ],
    "stateMutability": "view"
  },
+  {
+    "inputs": [],
+    "name": "getTurnLength",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
  {
    "type": "function",
    "name": "getValidators",
--- a/consensus/parlia/api.go
+++ b/consensus/parlia/api.go
@@ -31,13 +31,7 @@ type API struct {

 // GetSnapshot retrieves the state snapshot at a given block.
 func (api *API) GetSnapshot(number *rpc.BlockNumber) (*Snapshot, error) {
-	// Retrieve the requested block number (or current if none requested)
-	var header *types.Header
-	if number == nil || *number == rpc.LatestBlockNumber {
-		header = api.chain.CurrentHeader()
-	} else {
-		header = api.chain.GetHeaderByNumber(uint64(number.Int64()))
-	}
+	header := api.getHeader(number)
 	// Ensure we have an actually valid block and return its snapshot
 	if header == nil {
 		return nil, errUnknownBlock
@@ -56,13 +50,7 @@ func (api *API) GetSnapshotAtHash(hash common.Hash) (*Snapshot, error) {

 // GetValidators retrieves the list of validators at the specified block.
 func (api *API) GetValidators(number *rpc.BlockNumber) ([]common.Address, error) {
-	// Retrieve the requested block number (or current if none requested)
-	var header *types.Header
-	if number == nil || *number == rpc.LatestBlockNumber {
-		header = api.chain.CurrentHeader()
-	} else {
-		header = api.chain.GetHeaderByNumber(uint64(number.Int64()))
-	}
+	header := api.getHeader(number)
 	// Ensure we have an actually valid block and return the validators from its snapshot
 	if header == nil {
 		return nil, errUnknownBlock
@@ -86,3 +74,65 @@ func (api *API) GetValidatorsAtHash(hash common.Hash) ([]common.Address, error)
 	}
 	return snap.validators(), nil
 }
+
+func (api *API) GetJustifiedNumber(number *rpc.BlockNumber) (uint64, error) {
+	header := api.getHeader(number)
+	// Ensure we have an actually valid block and return the validators from its snapshot
+	if header == nil {
+		return 0, errUnknownBlock
+	}
+	snap, err := api.parlia.snapshot(api.chain, header.Number.Uint64(), header.Hash(), nil)
+	if err != nil || snap.Attestation == nil {
+		return 0, err
+	}
+	return snap.Attestation.TargetNumber, nil
+}
+
+func (api *API) GetTurnLength(number *rpc.BlockNumber) (uint8, error) {
+	header := api.getHeader(number)
+	// Ensure we have an actually valid block and return the validators from its snapshot
+	if header == nil {
+		return 0, errUnknownBlock
+	}
+	snap, err := api.parlia.snapshot(api.chain, header.Number.Uint64(), header.Hash(), nil)
+	if err != nil || snap.TurnLength == 0 {
+		return 0, err
+	}
+	return snap.TurnLength, nil
+}
+
+func (api *API) GetFinalizedNumber(number *rpc.BlockNumber) (uint64, error) {
+	header := api.getHeader(number)
+	// Ensure we have an actually valid block and return the validators from its snapshot
+	if header == nil {
+		return 0, errUnknownBlock
+	}
+	snap, err := api.parlia.snapshot(api.chain, header.Number.Uint64(), header.Hash(), nil)
+	if err != nil || snap.Attestation == nil {
+		return 0, err
+	}
+	return snap.Attestation.SourceNumber, nil
+}
+
+func (api *API) getHeader(number *rpc.BlockNumber) (header *types.Header) {
+	currentHeader := api.chain.CurrentHeader()
+
+	if number == nil || *number == rpc.LatestBlockNumber {
+		header = currentHeader // current if none requested
+	} else if *number == rpc.SafeBlockNumber {
+		justifiedNumber, _, err := api.parlia.GetJustifiedNumberAndHash(api.chain, []*types.Header{currentHeader})
+		if err != nil {
+			return nil
+		}
+		header = api.chain.GetHeaderByNumber(justifiedNumber)
+	} else if *number == rpc.FinalizedBlockNumber {
+		header = api.parlia.GetFinalizedHeader(api.chain, currentHeader)
+	} else if *number == rpc.PendingBlockNumber {
+		return nil // no pending blocks on bsc
+	} else if *number == rpc.EarliestBlockNumber {
+		header = api.chain.GetHeaderByNumber(0)
+	} else {
+		header = api.chain.GetHeaderByNumber(uint64(number.Int64()))
+	}
+	return
+}
--- a/consensus/parlia/bohrFork.go
+++ b/consensus/parlia/bohrFork.go
@@ -0,0 +1,91 @@
+package parlia
+
+import (
+	"context"
+	"errors"
+	"math/big"
+	mrand "math/rand"
+
+	"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"
+	"github.com/ethereum/go-ethereum/core/systemcontracts"
+	"github.com/ethereum/go-ethereum/core/types"
+	"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"
+)
+
+func (p *Parlia) getTurnLength(chain consensus.ChainHeaderReader, header *types.Header) (*uint8, error) {
+	parent := chain.GetHeaderByHash(header.ParentHash)
+	if parent == nil {
+		return nil, errors.New("parent not found")
+	}
+
+	var turnLength uint8
+	if p.chainConfig.IsBohr(parent.Number, parent.Time) {
+		turnLengthFromContract, err := p.getTurnLengthFromContract(parent)
+		if err != nil {
+			return nil, err
+		}
+		if turnLengthFromContract == nil {
+			return nil, errors.New("unexpected error when getTurnLengthFromContract")
+		}
+		turnLength = uint8(turnLengthFromContract.Int64())
+	} else {
+		turnLength = defaultTurnLength
+	}
+	log.Debug("getTurnLength", "turnLength", turnLength)
+
+	return &turnLength, nil
+}
+
+func (p *Parlia) getTurnLengthFromContract(header *types.Header) (turnLength *big.Int, err error) {
+	// mock to get turnLength from the contract
+	if params.FixedTurnLength >= 1 && params.FixedTurnLength <= 9 {
+		if params.FixedTurnLength == 2 {
+			return p.getRandTurnLength(header)
+		}
+		return big.NewInt(int64(params.FixedTurnLength)), nil
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	method := "getTurnLength"
+	toAddress := common.HexToAddress(systemcontracts.ValidatorContract)
+	gas := (hexutil.Uint64)(uint64(math.MaxUint64 / 2))
+
+	data, err := p.validatorSetABI.Pack(method)
+	if err != nil {
+		log.Error("Unable to pack tx for getTurnLength", "error", err)
+		return nil, err
+	}
+	msgData := (hexutil.Bytes)(data)
+
+	blockNr := rpc.BlockNumberOrHashWithHash(header.Hash(), false)
+	result, err := p.ethAPI.Call(ctx, ethapi.TransactionArgs{
+		Gas:  &gas,
+		To:   &toAddress,
+		Data: &msgData,
+	}, &blockNr, nil, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := p.validatorSetABI.UnpackIntoInterface(&turnLength, method, result); err != nil {
+		return nil, err
+	}
+
+	return turnLength, nil
+}
+
+// getRandTurnLength returns a random valid value, used to test switching turn length
+func (p *Parlia) getRandTurnLength(header *types.Header) (turnLength *big.Int, err error) {
+	turnLengths := [8]uint8{1, 3, 4, 5, 6, 7, 8, 9}
+	r := mrand.New(mrand.NewSource(int64(header.Time)))
+	lengthIndex := int(r.Int31n(int32(len(turnLengths))))
+	return big.NewInt(int64(turnLengths[lengthIndex])), nil
+}
--- a/consensus/parlia/parlia.go
+++ b/consensus/parlia/parlia.go
@@ -6,6 +6,7 @@ import (
 	"encoding/hex"
 	"errors"
 	"fmt"
+	"io"
 	"math"
 	"math/big"
 	"math/rand"
@@ -54,10 +55,12 @@ const (

 	checkpointInterval = 1024        // Number of blocks after which to save the snapshot to the database
 	defaultEpochLength = uint64(100) // Default number of blocks of checkpoint to update validatorSet from contract
+	defaultTurnLength  = uint8(1)    // Default consecutive number of blocks a validator receives priority for block production

 	extraVanity      = 32 // Fixed number of extra-data prefix bytes reserved for signer vanity
 	extraSeal        = 65 // Fixed number of extra-data suffix bytes reserved for signer seal
 	nextForkHashSize = 4  // Fixed number of extra-data suffix bytes reserved for nextForkHash.
+	turnLengthSize   = 1  // Fixed number of extra-data suffix bytes reserved for turnLength

 	validatorBytesLengthBeforeLuban = common.AddressLength
 	validatorBytesLength            = common.AddressLength + types.BLSPublicKeyLength
@@ -126,6 +129,10 @@ var (
 	// invalid list of validators (i.e. non divisible by 20 bytes).
 	errInvalidSpanValidators = errors.New("invalid validator list on sprint end block")

+	// errInvalidTurnLength is returned if a block contains an
+	// invalid length of turn (i.e. no data left after parsing validators).
+	errInvalidTurnLength = errors.New("invalid turnLength")
+
 	// errInvalidMixDigest is returned if a block's mix digest is non-zero.
 	errInvalidMixDigest = errors.New("non-zero mix digest")

@@ -136,6 +143,10 @@ var (
 	// list of validators different than the one the local node calculated.
 	errMismatchingEpochValidators = errors.New("mismatching validator list on epoch block")

+	// errMismatchingEpochTurnLength is returned if a sprint block contains a
+	// turn length different than the one the local node calculated.
+	errMismatchingEpochTurnLength = errors.New("mismatching turn length on epoch block")
+
 	// errInvalidDifficulty is returned if the difficulty of a block is missing.
 	errInvalidDifficulty = errors.New("invalid difficulty")

@@ -369,6 +380,7 @@ func (p *Parlia) VerifyHeaders(chain consensus.ChainHeaderReader, headers []*typ
 // On luban fork, we introduce vote attestation into the header's extra field, so extra format is different from before.
 // Before luban fork: |---Extra Vanity---|---Validators Bytes (or Empty)---|---Extra Seal---|
 // After luban fork:  |---Extra Vanity---|---Validators Number and Validators Bytes (or Empty)---|---Vote Attestation (or Empty)---|---Extra Seal---|
+// After bohr fork:   |---Extra Vanity---|---Validators Number and Validators Bytes (or Empty)---|---Turn Length (or Empty)---|---Vote Attestation (or Empty)---|---Extra Seal---|
 func getValidatorBytesFromHeader(header *types.Header, chainConfig *params.ChainConfig, parliaConfig *params.ParliaConfig) []byte {
 	if len(header.Extra) <= extraVanity+extraSeal {
 		return nil
@@ -385,11 +397,15 @@ func getValidatorBytesFromHeader(header *types.Header, chainConfig *params.Chain
 		return nil
 	}
 	num := int(header.Extra[extraVanity])
-	if num == 0 || len(header.Extra) <= extraVanity+extraSeal+num*validatorBytesLength {
-		return nil
-	}
 	start := extraVanity + validatorNumberSize
 	end := start + num*validatorBytesLength
+	extraMinLen := end + extraSeal
+	if chainConfig.IsBohr(header.Number, header.Time) {
+		extraMinLen += turnLengthSize
+	}
+	if num == 0 || len(header.Extra) < extraMinLen {
+		return nil
+	}
 	return header.Extra[start:end]
 }

@@ -408,11 +424,14 @@ func getVoteAttestationFromHeader(header *types.Header, chainConfig *params.Chai
 		attestationBytes = header.Extra[extraVanity : len(header.Extra)-extraSeal]
 	} else {
 		num := int(header.Extra[extraVanity])
-		if len(header.Extra) <= extraVanity+extraSeal+validatorNumberSize+num*validatorBytesLength {
+		start := extraVanity + validatorNumberSize + num*validatorBytesLength
+		if chainConfig.IsBohr(header.Number, header.Time) {
+			start += turnLengthSize
+		}
+		end := len(header.Extra) - extraSeal
+		if end <= start {
 			return nil, nil
 		}
-		start := extraVanity + validatorNumberSize + num*validatorBytesLength
-		end := len(header.Extra) - extraSeal
 		attestationBytes = header.Extra[start:end]
 	}

@@ -604,15 +623,11 @@ func (p *Parlia) verifyHeader(chain consensus.ChainHeaderReader, header *types.H
 			return fmt.Errorf("invalid excessBlobGas: have %d, expected nil", header.ExcessBlobGas)
 		case header.BlobGasUsed != nil:
 			return fmt.Errorf("invalid blobGasUsed: have %d, expected nil", header.BlobGasUsed)
-		case header.ParentBeaconRoot != nil:
-			return fmt.Errorf("invalid parentBeaconRoot, have %#x, expected nil", header.ParentBeaconRoot)
 		case header.WithdrawalsHash != nil:
 			return fmt.Errorf("invalid WithdrawalsHash, have %#x, expected nil", header.WithdrawalsHash)
 		}
 	} else {
 		switch {
-		case header.ParentBeaconRoot != nil:
-			return fmt.Errorf("invalid parentBeaconRoot, have %#x, expected nil", header.ParentBeaconRoot)
 		case !header.EmptyWithdrawalsHash():
 			return errors.New("header has wrong WithdrawalsHash")
 		}
@@ -621,6 +636,17 @@ func (p *Parlia) verifyHeader(chain consensus.ChainHeaderReader, header *types.H
 		}
 	}

+	bohr := chain.Config().IsBohr(header.Number, header.Time)
+	if !bohr {
+		if header.ParentBeaconRoot != nil {
+			return fmt.Errorf("invalid parentBeaconRoot, have %#x, expected nil", header.ParentBeaconRoot)
+		}
+	} else {
+		if header.ParentBeaconRoot == nil || *header.ParentBeaconRoot != (common.Hash{}) {
+			return fmt.Errorf("invalid parentBeaconRoot, have %#x, expected zero hash", header.ParentBeaconRoot)
+		}
+	}
+
 	// All basic checks passed, verify cascading fields
 	return p.verifyCascadingFields(chain, header, parents)
 }
@@ -888,6 +914,24 @@ func (p *Parlia) prepareValidators(header *types.Header) error {
 	return nil
 }

+func (p *Parlia) prepareTurnLength(chain consensus.ChainHeaderReader, header *types.Header) error {
+	if header.Number.Uint64()%p.config.Epoch != 0 ||
+		!p.chainConfig.IsBohr(header.Number, header.Time) {
+		return nil
+	}
+
+	turnLength, err := p.getTurnLength(chain, header)
+	if err != nil {
+		return err
+	}
+
+	if turnLength != nil {
+		header.Extra = append(header.Extra, *turnLength)
+	}
+
+	return nil
+}
+
 func (p *Parlia) assembleVoteAttestation(chain consensus.ChainHeaderReader, header *types.Header) error {
 	if !p.chainConfig.IsLuban(header.Number) || header.Number.Uint64() < 2 {
 		return nil
@@ -1019,6 +1063,9 @@ func (p *Parlia) Prepare(chain consensus.ChainHeaderReader, header *types.Header
 		return err
 	}

+	if err := p.prepareTurnLength(chain, header); err != nil {
+		return err
+	}
 	// add extra seal space
 	header.Extra = append(header.Extra, make([]byte, extraSeal)...)

@@ -1069,6 +1116,30 @@ func (p *Parlia) verifyValidators(header *types.Header) error {
 	return nil
 }

+func (p *Parlia) verifyTurnLength(chain consensus.ChainHeaderReader, header *types.Header) error {
+	if header.Number.Uint64()%p.config.Epoch != 0 ||
+		!p.chainConfig.IsBohr(header.Number, header.Time) {
+		return nil
+	}
+
+	turnLengthFromHeader, err := parseTurnLength(header, p.chainConfig, p.config)
+	if err != nil {
+		return err
+	}
+	if turnLengthFromHeader != nil {
+		turnLength, err := p.getTurnLength(chain, header)
+		if err != nil {
+			return err
+		}
+		if turnLength != nil && *turnLength == *turnLengthFromHeader {
+			log.Debug("verifyTurnLength", "turnLength", *turnLength)
+			return nil
+		}
+	}
+
+	return errMismatchingEpochTurnLength
+}
+
 func (p *Parlia) distributeFinalityReward(chain consensus.ChainHeaderReader, state *state.StateDB, header *types.Header,
 	cx core.ChainContext, txs *[]*types.Transaction, receipts *[]*types.Receipt, systemTxs *[]*types.Transaction,
 	usedGas *uint64, mining bool) error {
@@ -1163,6 +1234,10 @@ func (p *Parlia) Finalize(chain consensus.ChainHeaderReader, header *types.Heade
 		return err
 	}

+	if err := p.verifyTurnLength(chain, header); err != nil {
+		return err
+	}
+
 	cx := chainContext{Chain: chain, parlia: p}

 	parent := chain.GetHeaderByHash(header.ParentHash)
@@ -1189,7 +1264,7 @@ func (p *Parlia) Finalize(chain consensus.ChainHeaderReader, header *types.Heade
 		}
 	}
 	if header.Difficulty.Cmp(diffInTurn) != 0 {
-		spoiledVal := snap.supposeValidator()
+		spoiledVal := snap.inturnValidator()
 		signedRecently := false
 		if p.chainConfig.IsPlato(header.Number) {
 			signedRecently = snap.SignRecently(spoiledVal)
@@ -1280,7 +1355,7 @@ func (p *Parlia) FinalizeAndAssemble(chain consensus.ChainHeaderReader, header *
 		if err != nil {
 			return nil, nil, err
 		}
-		spoiledVal := snap.supposeValidator()
+		spoiledVal := snap.inturnValidator()
 		signedRecently := false
 		if p.chainConfig.IsPlato(header.Number) {
 			signedRecently = snap.SignRecently(spoiledVal)
@@ -1362,7 +1437,7 @@ func (p *Parlia) IsActiveValidatorAt(chain consensus.ChainHeaderReader, header *
 func (p *Parlia) VerifyVote(chain consensus.ChainHeaderReader, vote *types.VoteEnvelope) error {
 	targetNumber := vote.Data.TargetNumber
 	targetHash := vote.Data.TargetHash
-	header := chain.GetHeaderByHash(targetHash)
+	header := chain.GetVerifiedBlockByHash(targetHash)
 	if header == nil {
 		log.Warn("BlockHeader at current voteBlockNumber is nil", "targetNumber", targetNumber, "targetHash", targetHash)
 		return errors.New("BlockHeader at current voteBlockNumber is nil")
@@ -1433,10 +1508,13 @@ func (p *Parlia) Delay(chain consensus.ChainReader, header *types.Header, leftOv
 		delay = delay - *leftOver
 	}

-	// The blocking time should be no more than half of period
-	half := time.Duration(p.config.Period) * time.Second / 2
-	if delay > half {
-		delay = half
+	// The blocking time should be no more than half of period when snap.TurnLength == 1
+	timeForMining := time.Duration(p.config.Period) * time.Second / 2
+	if !snap.lastBlockInOneTurn(header.Number.Uint64()) {
+		timeForMining = time.Duration(p.config.Period) * time.Second * 2 / 3
+	}
+	if delay > timeForMining {
+		delay = timeForMining
 	}
 	return &delay
 }
@@ -1594,11 +1672,35 @@ func CalcDifficulty(snap *Snapshot, signer common.Address) *big.Int {
 	return new(big.Int).Set(diffNoTurn)
 }

+func encodeSigHeaderWithoutVoteAttestation(w io.Writer, header *types.Header, chainId *big.Int) {
+	err := rlp.Encode(w, []interface{}{
+		chainId,
+		header.ParentHash,
+		header.UncleHash,
+		header.Coinbase,
+		header.Root,
+		header.TxHash,
+		header.ReceiptHash,
+		header.Bloom,
+		header.Difficulty,
+		header.Number,
+		header.GasLimit,
+		header.GasUsed,
+		header.Time,
+		header.Extra[:extraVanity], // this will panic if extra is too short, should check before calling encodeSigHeaderWithoutVoteAttestation
+		header.MixDigest,
+		header.Nonce,
+	})
+	if err != nil {
+		panic("can't encode: " + err.Error())
+	}
+}
+
 // SealHash returns the hash of a block without vote attestation prior to it being sealed.
 // So it's not the real hash of a block, just used as unique id to distinguish task
 func (p *Parlia) SealHash(header *types.Header) (hash common.Hash) {
 	hasher := sha3.NewLegacyKeccak256()
-	types.EncodeSigHeaderWithoutVoteAttestation(hasher, header, p.chainConfig.ChainID)
+	encodeSigHeaderWithoutVoteAttestation(hasher, header, p.chainConfig.ChainID)
 	hasher.Sum(hash[:0])
 	return hash
 }
@@ -1904,42 +2006,40 @@ func (p *Parlia) GetFinalizedHeader(chain consensus.ChainHeaderReader, header *t
 // ===========================     utility function        ==========================
 func (p *Parlia) backOffTime(snap *Snapshot, header *types.Header, val common.Address) uint64 {
 	if snap.inturn(val) {
+		log.Debug("backOffTime", "blockNumber", header.Number, "in turn validator", val)
 		return 0
 	} else {
 		delay := initialBackOffTime
 		validators := snap.validators()
 		if p.chainConfig.IsPlanck(header.Number) {
-			// reverse the key/value of snap.Recents to get recentsMap
-			recentsMap := make(map[common.Address]uint64, len(snap.Recents))
-			bound := uint64(0)
-			if n, limit := header.Number.Uint64(), uint64(len(validators)/2+1); n > limit {
-				bound = n - limit
-			}
-			for seen, recent := range snap.Recents {
-				if seen <= bound {
-					continue
-				}
-				recentsMap[recent] = seen
+			counts := snap.countRecents()
+			for addr, seenTimes := range counts {
+				log.Debug("backOffTime", "blockNumber", header.Number, "validator", addr, "seenTimes", seenTimes)
 			}

 			// The backOffTime does not matter when a validator has signed recently.
-			if _, ok := recentsMap[val]; ok {
+			if snap.signRecentlyByCounts(val, counts) {
 				return 0
 			}

-			inTurnAddr := validators[(snap.Number+1)%uint64(len(validators))]
-			if _, ok := recentsMap[inTurnAddr]; ok {
+			inTurnAddr := snap.inturnValidator()
+			if snap.signRecentlyByCounts(inTurnAddr, counts) {
 				log.Debug("in turn validator has recently signed, skip initialBackOffTime",
 					"inTurnAddr", inTurnAddr)
 				delay = 0
 			}

-			// Exclude the recently signed validators
+			// Exclude the recently signed validators and the in turn validator
 			temp := make([]common.Address, 0, len(validators))
 			for _, addr := range validators {
-				if _, ok := recentsMap[addr]; ok {
+				if snap.signRecentlyByCounts(addr, counts) {
 					continue
 				}
+				if p.chainConfig.IsBohr(header.Number, header.Time) {
+					if addr == inTurnAddr {
+						continue
+					}
+				}
 				temp = append(temp, addr)
 			}
 			validators = temp
@@ -1957,7 +2057,11 @@ func (p *Parlia) backOffTime(snap *Snapshot, header *types.Header, val common.Ad
 			return 0
 		}

-		s := rand.NewSource(int64(snap.Number))
+		randSeed := snap.Number
+		if p.chainConfig.IsBohr(header.Number, header.Time) {
+			randSeed = header.Number.Uint64() / uint64(snap.TurnLength)
+		}
+		s := rand.NewSource(int64(randSeed))
 		r := rand.New(s)
 		n := len(validators)
 		backOffSteps := make([]uint64, 0, n)
--- a/consensus/parlia/parlia_test.go
+++ b/consensus/parlia/parlia_test.go
@@ -22,22 +22,44 @@ func TestImpactOfValidatorOutOfService(t *testing.T) {
 	testCases := []struct {
 		totalValidators int
 		downValidators  int
+		turnLength      int
 	}{
-		{3, 1},
-		{5, 2},
-		{10, 1},
-		{10, 4},
-		{21, 1},
-		{21, 3},
-		{21, 5},
-		{21, 10},
+		{3, 1, 1},
+		{5, 2, 1},
+		{10, 1, 2},
+		{10, 4, 2},
+		{21, 1, 3},
+		{21, 3, 3},
+		{21, 5, 4},
+		{21, 10, 5},
 	}
 	for _, tc := range testCases {
-		simulateValidatorOutOfService(tc.totalValidators, tc.downValidators)
+		simulateValidatorOutOfService(tc.totalValidators, tc.downValidators, tc.turnLength)
 	}
 }

-func simulateValidatorOutOfService(totalValidators int, downValidators int) {
+// refer Snapshot.SignRecently
+func signRecently(idx int, recents map[uint64]int, turnLength int) bool {
+	recentSignTimes := 0
+	for _, signIdx := range recents {
+		if signIdx == idx {
+			recentSignTimes += 1
+		}
+	}
+	return recentSignTimes >= turnLength
+}
+
+// refer Snapshot.minerHistoryCheckLen
+func minerHistoryCheckLen(totalValidators int, turnLength int) uint64 {
+	return uint64(totalValidators/2+1)*uint64(turnLength) - 1
+}
+
+// refer Snapshot.inturnValidator
+func inturnValidator(totalValidators int, turnLength int, height int) int {
+	return height / turnLength % totalValidators
+}
+
+func simulateValidatorOutOfService(totalValidators int, downValidators int, turnLength int) {
 	downBlocks := 10000
 	recoverBlocks := 10000
 	recents := make(map[uint64]int)
@@ -55,12 +77,7 @@ func simulateValidatorOutOfService(totalValidators int, downValidators int) {
 		delete(validators, down[i])
 	}
 	isRecentSign := func(idx int) bool {
-		for _, signIdx := range recents {
-			if signIdx == idx {
-				return true
-			}
-		}
-		return false
+		return signRecently(idx, recents, turnLength)
 	}
 	isInService := func(idx int) bool {
 		return validators[idx]
@@ -68,10 +85,10 @@ func simulateValidatorOutOfService(totalValidators int, downValidators int) {

 	downDelay := uint64(0)
 	for h := 1; h <= downBlocks; h++ {
-		if limit := uint64(totalValidators/2 + 1); uint64(h) >= limit {
+		if limit := minerHistoryCheckLen(totalValidators, turnLength) + 1; uint64(h) >= limit {
 			delete(recents, uint64(h)-limit)
 		}
-		proposer := h % totalValidators
+		proposer := inturnValidator(totalValidators, turnLength, h)
 		if !isInService(proposer) || isRecentSign(proposer) {
 			candidates := make(map[int]bool, totalValidators/2)
 			for v := range validators {
@@ -99,10 +116,10 @@ func simulateValidatorOutOfService(totalValidators int, downValidators int) {
 	recoverDelay := uint64(0)
 	lastseen := downBlocks
 	for h := downBlocks + 1; h <= downBlocks+recoverBlocks; h++ {
-		if limit := uint64(totalValidators/2 + 1); uint64(h) >= limit {
+		if limit := minerHistoryCheckLen(totalValidators, turnLength) + 1; uint64(h) >= limit {
 			delete(recents, uint64(h)-limit)
 		}
-		proposer := h % totalValidators
+		proposer := inturnValidator(totalValidators, turnLength, h)
 		if !isInService(proposer) || isRecentSign(proposer) {
 			lastseen = h
 			candidates := make(map[int]bool, totalValidators/2)
--- a/consensus/parlia/snapshot.go
+++ b/consensus/parlia/snapshot.go
@@ -22,6 +22,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"math"
 	"sort"

 	lru "github.com/hashicorp/golang-lru"
@@ -43,6 +44,7 @@ type Snapshot struct {

 	Number           uint64                            `json:"number"`                // Block number where the snapshot was created
 	Hash             common.Hash                       `json:"hash"`                  // Block hash where the snapshot was created
+	TurnLength       uint8                             `json:"turn_length"`           // Length of `turn`, meaning the consecutive number of blocks a validator receives priority for block production
 	Validators       map[common.Address]*ValidatorInfo `json:"validators"`            // Set of authorized validators at this moment
 	Recents          map[uint64]common.Address         `json:"recents"`               // Set of recent validators for spam protections
 	RecentForkHashes map[uint64]string                 `json:"recent_fork_hashes"`    // Set of recent forkHash
@@ -72,6 +74,7 @@ func newSnapshot(
 		sigCache:         sigCache,
 		Number:           number,
 		Hash:             hash,
+		TurnLength:       defaultTurnLength,
 		Recents:          make(map[uint64]common.Address),
 		RecentForkHashes: make(map[uint64]string),
 		Validators:       make(map[common.Address]*ValidatorInfo),
@@ -114,6 +117,10 @@ func loadSnapshot(config *params.ParliaConfig, sigCache *lru.ARCCache, db ethdb.
 	if err := json.Unmarshal(blob, snap); err != nil {
 		return nil, err
 	}
+	if snap.TurnLength == 0 { // no TurnLength field in old snapshots
+		snap.TurnLength = defaultTurnLength
+	}
+
 	snap.config = config
 	snap.sigCache = sigCache
 	snap.ethAPI = ethAPI
@@ -138,6 +145,7 @@ func (s *Snapshot) copy() *Snapshot {
 		sigCache:         s.sigCache,
 		Number:           s.Number,
 		Hash:             s.Hash,
+		TurnLength:       s.TurnLength,
 		Validators:       make(map[common.Address]*ValidatorInfo),
 		Recents:          make(map[uint64]common.Address),
 		RecentForkHashes: make(map[uint64]string),
@@ -210,17 +218,45 @@ func (s *Snapshot) updateAttestation(header *types.Header, chainConfig *params.C
 	}
 }

-func (s *Snapshot) SignRecently(validator common.Address) bool {
-	for seen, recent := range s.Recents {
-		if recent == validator {
-			if limit := uint64(len(s.Validators)/2 + 1); s.Number+1 < limit || seen > s.Number+1-limit {
-				return true
-			}
-		}
+func (s *Snapshot) versionHistoryCheckLen() uint64 {
+	return uint64(len(s.Validators)) * uint64(s.TurnLength)
+}
+
+func (s *Snapshot) minerHistoryCheckLen() uint64 {
+	return (uint64(len(s.Validators))/2+1)*uint64(s.TurnLength) - 1
+}
+
+func (s *Snapshot) countRecents() map[common.Address]uint8 {
+	leftHistoryBound := uint64(0) // the bound is excluded
+	checkHistoryLength := s.minerHistoryCheckLen()
+	if s.Number > checkHistoryLength {
+		leftHistoryBound = s.Number - checkHistoryLength
 	}
+	counts := make(map[common.Address]uint8, len(s.Validators))
+	for seen, recent := range s.Recents {
+		if seen <= leftHistoryBound || recent == (common.Address{}) /*when seen == `epochKey`*/ {
+			continue
+		}
+		counts[recent] += 1
+	}
+	return counts
+}
+
+func (s *Snapshot) signRecentlyByCounts(validator common.Address, counts map[common.Address]uint8) bool {
+	if seenTimes, ok := counts[validator]; ok && seenTimes >= s.TurnLength {
+		if seenTimes > s.TurnLength {
+			log.Warn("produce more blocks than expected!", "validator", validator, "seenTimes", seenTimes)
+		}
+		return true
+	}
+
 	return false
 }

+func (s *Snapshot) SignRecently(validator common.Address) bool {
+	return s.signRecentlyByCounts(validator, s.countRecents())
+}
+
 func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderReader, parents []*types.Header, chainConfig *params.ChainConfig) (*Snapshot, error) {
 	// Allow passing in no headers for cleaner code
 	if len(headers) == 0 {
@@ -247,10 +283,10 @@ func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderRea
 	for _, header := range headers {
 		number := header.Number.Uint64()
 		// Delete the oldest validator from the recent list to allow it signing again
-		if limit := uint64(len(snap.Validators)/2 + 1); number >= limit {
+		if limit := snap.minerHistoryCheckLen() + 1; number >= limit {
 			delete(snap.Recents, number-limit)
 		}
-		if limit := uint64(len(snap.Validators)); number >= limit {
+		if limit := snap.versionHistoryCheckLen(); number >= limit {
 			delete(snap.RecentForkHashes, number-limit)
 		}
 		// Resolve the authorization key and check against signers
@@ -261,19 +297,47 @@ func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderRea
 		if _, ok := snap.Validators[validator]; !ok {
 			return nil, errUnauthorizedValidator(validator.String())
 		}
-		for _, recent := range snap.Recents {
-			if recent == validator {
+		if chainConfig.IsBohr(header.Number, header.Time) {
+			if snap.SignRecently(validator) {
 				return nil, errRecentlySigned
 			}
+		} else {
+			for _, recent := range snap.Recents {
+				if recent == validator {
+					return nil, errRecentlySigned
+				}
+			}
 		}
 		snap.Recents[number] = validator
+		snap.RecentForkHashes[number] = hex.EncodeToString(header.Extra[extraVanity-nextForkHashSize : extraVanity])
+		snap.updateAttestation(header, chainConfig, s.config)
 		// change validator set
-		if number > 0 && number%s.config.Epoch == uint64(len(snap.Validators)/2) {
-			checkpointHeader := FindAncientHeader(header, uint64(len(snap.Validators)/2), chain, parents)
+		if number > 0 && number%s.config.Epoch == snap.minerHistoryCheckLen() {
+			epochKey := math.MaxUint64 - header.Number.Uint64()/s.config.Epoch // impossible used as a block number
+			if chainConfig.IsBohr(header.Number, header.Time) {
+				// after switching the validator set, snap.Validators may become larger,
+				// then the unexpected second switch will happen, just skip it.
+				if _, ok := snap.Recents[epochKey]; ok {
+					continue
+				}
+			}
+
+			checkpointHeader := FindAncientHeader(header, snap.minerHistoryCheckLen(), chain, parents)
 			if checkpointHeader == nil {
 				return nil, consensus.ErrUnknownAncestor
 			}

+			oldVersionsLen := snap.versionHistoryCheckLen()
+			// get turnLength from headers and use that for new turnLength
+			turnLength, err := parseTurnLength(checkpointHeader, chainConfig, s.config)
+			if err != nil {
+				return nil, err
+			}
+			if turnLength != nil {
+				snap.TurnLength = *turnLength
+				log.Debug("validator set switch", "turnLength", *turnLength)
+			}
+
 			// get validators from headers and use that for new validator set
 			newValArr, voteAddrs, err := parseValidators(checkpointHeader, chainConfig, s.config)
 			if err != nil {
@@ -289,18 +353,18 @@ func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderRea
 					}
 				}
 			}
-			oldLimit := len(snap.Validators)/2 + 1
-			newLimit := len(newVals)/2 + 1
-			if newLimit < oldLimit {
-				for i := 0; i < oldLimit-newLimit; i++ {
-					delete(snap.Recents, number-uint64(newLimit)-uint64(i))
-				}
-			}
-			oldLimit = len(snap.Validators)
-			newLimit = len(newVals)
-			if newLimit < oldLimit {
-				for i := 0; i < oldLimit-newLimit; i++ {
-					delete(snap.RecentForkHashes, number-uint64(newLimit)-uint64(i))
+			if chainConfig.IsBohr(header.Number, header.Time) {
+				// BEP-404: Clear Miner History when Switching Validators Set
+				snap.Recents = make(map[uint64]common.Address)
+				snap.Recents[epochKey] = common.Address{}
+				log.Debug("Recents are cleared up", "blockNumber", number)
+			} else {
+				oldLimit := len(snap.Validators)/2 + 1
+				newLimit := len(newVals)/2 + 1
+				if newLimit < oldLimit {
+					for i := 0; i < oldLimit-newLimit; i++ {
+						delete(snap.Recents, number-uint64(newLimit)-uint64(i))
+					}
 				}
 			}
 			snap.Validators = newVals
@@ -310,11 +374,10 @@ func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderRea
 					snap.Validators[val].Index = idx + 1 // offset by 1
 				}
 			}
+			for i := snap.versionHistoryCheckLen(); i < oldVersionsLen; i++ {
+				delete(snap.RecentForkHashes, number-i)
+			}
 		}
-
-		snap.updateAttestation(header, chainConfig, s.config)
-
-		snap.RecentForkHashes[number] = hex.EncodeToString(header.Extra[extraVanity-nextForkHashSize : extraVanity])
 	}
 	snap.Number += uint64(len(headers))
 	snap.Hash = headers[len(headers)-1].Hash()
@@ -331,17 +394,20 @@ func (s *Snapshot) validators() []common.Address {
 	return validators
 }

-// inturn returns if a validator at a given block height is in-turn or not.
-func (s *Snapshot) inturn(validator common.Address) bool {
-	validators := s.validators()
-	offset := (s.Number + 1) % uint64(len(validators))
-	return validators[offset] == validator
+// lastBlockInOneTurn returns if the block at height `blockNumber` is the last block in current turn.
+func (s *Snapshot) lastBlockInOneTurn(blockNumber uint64) bool {
+	return (blockNumber+1)%uint64(s.TurnLength) == 0
 }

-// inturnValidator returns the validator at a given block height.
+// inturn returns if a validator at a given block height is in-turn or not.
+func (s *Snapshot) inturn(validator common.Address) bool {
+	return s.inturnValidator() == validator
+}
+
+// inturnValidator returns the validator for the following block height.
 func (s *Snapshot) inturnValidator() common.Address {
 	validators := s.validators()
-	offset := (s.Number + 1) % uint64(len(validators))
+	offset := (s.Number + 1) / uint64(s.TurnLength) % uint64(len(validators))
 	return validators[offset]
 }

@@ -379,12 +445,6 @@ func (s *Snapshot) indexOfVal(validator common.Address) int {
 	return -1
 }

-func (s *Snapshot) supposeValidator() common.Address {
-	validators := s.validators()
-	index := (s.Number + 1) % uint64(len(validators))
-	return validators[index]
-}
-
 func parseValidators(header *types.Header, chainConfig *params.ChainConfig, parliaConfig *params.ParliaConfig) ([]common.Address, []types.BLSPublicKey, error) {
 	validatorsBytes := getValidatorBytesFromHeader(header, chainConfig, parliaConfig)
 	if len(validatorsBytes) == 0 {
@@ -410,6 +470,24 @@ func parseValidators(header *types.Header, chainConfig *params.ChainConfig, parl
 	return cnsAddrs, voteAddrs, nil
 }

+func parseTurnLength(header *types.Header, chainConfig *params.ChainConfig, parliaConfig *params.ParliaConfig) (*uint8, error) {
+	if header.Number.Uint64()%parliaConfig.Epoch != 0 ||
+		!chainConfig.IsBohr(header.Number, header.Time) {
+		return nil, nil
+	}
+
+	if len(header.Extra) <= extraVanity+extraSeal {
+		return nil, errInvalidSpanValidators
+	}
+	num := int(header.Extra[extraVanity])
+	pos := extraVanity + validatorNumberSize + num*validatorBytesLength
+	if len(header.Extra) <= pos {
+		return nil, errInvalidTurnLength
+	}
+	turnLength := header.Extra[pos]
+	return &turnLength, nil
+}
+
 func FindAncientHeader(header *types.Header, ite uint64, chain consensus.ChainHeaderReader, candidateParents []*types.Header) *types.Header {
 	ancient := header
 	for i := uint64(1); i <= ite; i++ {
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -20,6 +20,7 @@ package core
 import (
 	"errors"
 	"fmt"
+	"github.com/ethereum/go-ethereum/triedb/versadb"
 	"io"
 	"math/big"
 	"runtime"
@@ -196,6 +197,11 @@ func (c *CacheConfig) triedbConfig() *triedb.Config {
 			JournalFile:     c.JournalFile,
 		}
 	}
+	if c.StateScheme == rawdb.VersaScheme {
+		config.VersaDB = &versadb.Config{
+			CleanCacheSize: c.TrieCleanLimit * 1024 * 1024,
+		}
+	}
 	return config
 }

@@ -259,23 +265,25 @@ type BlockChain struct {
 	triesInMemory uint64
 	txIndexer     *txIndexer // Transaction indexer, might be nil if not enabled

-	hc                  *HeaderChain
-	rmLogsFeed          event.Feed
-	chainFeed           event.Feed
-	chainSideFeed       event.Feed
-	chainHeadFeed       event.Feed
-	chainBlockFeed      event.Feed
-	logsFeed            event.Feed
-	blockProcFeed       event.Feed
-	finalizedHeaderFeed event.Feed
-	scope               event.SubscriptionScope
-	genesisBlock        *types.Block
+	hc                       *HeaderChain
+	rmLogsFeed               event.Feed
+	chainFeed                event.Feed
+	chainSideFeed            event.Feed
+	chainHeadFeed            event.Feed
+	chainBlockFeed           event.Feed
+	logsFeed                 event.Feed
+	blockProcFeed            event.Feed
+	finalizedHeaderFeed      event.Feed
+	highestVerifiedBlockFeed event.Feed
+	scope                    event.SubscriptionScope
+	genesisBlock             *types.Block

 	// This mutex synchronizes chain write operations.
 	// Readers don't need to take it, they can just read the database.
 	chainmu *syncx.ClosableMutex

 	highestVerifiedHeader atomic.Pointer[types.Header]
+	highestVerifiedBlock  atomic.Pointer[types.Header]
 	currentBlock          atomic.Pointer[types.Header] // Current head of the chain
 	currentSnapBlock      atomic.Pointer[types.Header] // Current head of snap-sync
 	currentFinalBlock     atomic.Pointer[types.Header] // Latest (consensus) finalized block
@@ -400,6 +408,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 	}

 	bc.highestVerifiedHeader.Store(nil)
+	bc.highestVerifiedBlock.Store(nil)
 	bc.currentBlock.Store(nil)
 	bc.currentSnapBlock.Store(nil)
 	bc.chasingHead.Store(nil)
@@ -1390,7 +1399,7 @@ func (bc *BlockChain) Stop() {
 		if !bc.cacheConfig.TrieDirtyDisabled {
 			triedb := bc.triedb
 			var once sync.Once
-			for _, offset := range []uint64{0, 1, TriesInMemory - 1} {
+			for _, offset := range []uint64{0, 1, bc.TriesInMemory() - 1} {
 				if number := bc.CurrentBlock().Number.Uint64(); number > offset {
 					recent := bc.GetBlockByNumber(number - offset)
 					log.Info("Writing cached state to disk", "block", recent.Number(), "hash", recent.Hash(), "root", recent.Root())
@@ -1828,7 +1837,7 @@ func (bc *BlockChain) writeBlockWithState(block *types.Block, receipts []*types.

 		// Flush limits are not considered for the first TriesInMemory blocks.
 		current := block.NumberU64()
-		if current <= TriesInMemory {
+		if current <= bc.TriesInMemory() {
 			return nil
 		}
 		// If we exceeded our memory allowance, flush matured singleton nodes to disk
@@ -1926,14 +1935,19 @@ func (bc *BlockChain) WriteBlockAndSetHead(block *types.Block, receipts []*types
 // writeBlockAndSetHead is the internal implementation of WriteBlockAndSetHead.
 // This function expects the chain mutex to be held.
 func (bc *BlockChain) writeBlockAndSetHead(block *types.Block, receipts []*types.Receipt, logs []*types.Log, state *state.StateDB, emitHeadEvent bool) (status WriteStatus, err error) {
-	if err := bc.writeBlockWithState(block, receipts, state); err != nil {
-		return NonStatTy, err
-	}
 	currentBlock := bc.CurrentBlock()
 	reorg, err := bc.forker.ReorgNeededWithFastFinality(currentBlock, block.Header())
 	if err != nil {
 		return NonStatTy, err
 	}
+	if reorg {
+		bc.highestVerifiedBlock.Store(types.CopyHeader(block.Header()))
+		bc.highestVerifiedBlockFeed.Send(HighestVerifiedBlockEvent{Header: block.Header()})
+	}
+
+	if err := bc.writeBlockWithState(block, receipts, state); err != nil {
+		return NonStatTy, err
+	}
 	if reorg {
 		// Reorganise the chain if the parent is not the head block
 		if block.ParentHash() != currentBlock.Hash() {
--- a/core/blockchain_reader.go
+++ b/core/blockchain_reader.go
@@ -98,6 +98,15 @@ func (bc *BlockChain) GetHeaderByHash(hash common.Hash) *types.Header {
 	return bc.hc.GetHeaderByHash(hash)
 }

+// GetVerifiedBlockByHash retrieves the header of a verified block, it may be only in memory.
+func (bc *BlockChain) GetVerifiedBlockByHash(hash common.Hash) *types.Header {
+	highestVerifiedBlock := bc.highestVerifiedBlock.Load()
+	if highestVerifiedBlock != nil && highestVerifiedBlock.Hash() == hash {
+		return highestVerifiedBlock
+	}
+	return bc.hc.GetHeaderByHash(hash)
+}
+
 // GetHeaderByNumber retrieves a block header from the database by number,
 // caching it (associated with its hash) if found.
 func (bc *BlockChain) GetHeaderByNumber(number uint64) *types.Header {
@@ -486,6 +495,11 @@ func (bc *BlockChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Su
 	return bc.scope.Track(bc.chainHeadFeed.Subscribe(ch))
 }

+// SubscribeHighestVerifiedBlockEvent registers a subscription of HighestVerifiedBlockEvent.
+func (bc *BlockChain) SubscribeHighestVerifiedHeaderEvent(ch chan<- HighestVerifiedBlockEvent) event.Subscription {
+	return bc.scope.Track(bc.highestVerifiedBlockFeed.Subscribe(ch))
+}
+
 // SubscribeChainBlockEvent registers a subscription of ChainBlockEvent.
 func (bc *BlockChain) SubscribeChainBlockEvent(ch chan<- ChainHeadEvent) event.Subscription {
 	return bc.scope.Track(bc.chainBlockFeed.Subscribe(ch))
--- a/core/chain_makers.go
+++ b/core/chain_makers.go
@@ -486,7 +486,7 @@ func (cm *chainMaker) makeHeader(parent *types.Block, state *state.StateDB, engi
 		if cm.config.Parlia != nil {
 			header.WithdrawalsHash = &types.EmptyWithdrawalsHash
 		}
-		if cm.config.Parlia == nil {
+		if cm.config.Parlia == nil || cm.config.IsBohr(header.Number, header.Time) {
 			header.ParentBeaconRoot = new(common.Hash)
 		}
 	}
@@ -621,6 +621,10 @@ func (cm *chainMaker) GetHighestVerifiedHeader() *types.Header {
 	panic("not supported")
 }

+func (cm *chainMaker) GetVerifiedBlockByHash(hash common.Hash) *types.Header {
+	return cm.GetHeaderByHash(hash)
+}
+
 func (cm *chainMaker) ChasingHead() *types.Header {
 	panic("not supported")
 }
--- a/core/data_availability_test.go
+++ b/core/data_availability_test.go
@@ -365,6 +365,10 @@ func (r *mockDAHeaderReader) GetHighestVerifiedHeader() *types.Header {
 	panic("not supported")
 }

+func (r *mockDAHeaderReader) GetVerifiedBlockByHash(hash common.Hash) *types.Header {
+	panic("not supported")
+}
+
 func createMockDATx(config *params.ChainConfig, sidecar *types.BlobTxSidecar) *types.Transaction {
 	if sidecar == nil {
 		tx := &types.DynamicFeeTx{
--- a/core/events.go
+++ b/core/events.go
@@ -50,3 +50,5 @@ type ChainSideEvent struct {
 }

 type ChainHeadEvent struct{ Block *types.Block }
+
+type HighestVerifiedBlockEvent struct{ Header *types.Header }
--- a/core/forkchoice.go
+++ b/core/forkchoice.go
@@ -121,9 +121,12 @@ func (f *ForkChoice) ReorgNeeded(current *types.Header, extern *types.Header) (b
 		if f.preserve != nil {
 			currentPreserve, externPreserve = f.preserve(current), f.preserve(extern)
 		}
+		doubleSign := (extern.Coinbase == current.Coinbase)
 		reorg = !currentPreserve && (externPreserve ||
 			extern.Time < current.Time ||
-			extern.Time == current.Time && f.rand.Float64() < 0.5)
+			extern.Time == current.Time &&
+				((doubleSign && extern.Hash().Cmp(current.Hash()) < 0) ||
+					(!doubleSign && f.rand.Float64() < 0.5)))
 	}
 	return reorg, nil
 }
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -216,8 +216,9 @@ func (e *GenesisMismatchError) Error() string {
 // ChainOverrides contains the changes to chain config
 // Typically, these modifications involve hardforks that are not enabled on the BSC mainnet, intended for testing purposes.
 type ChainOverrides struct {
-	OverrideBohr   *uint64
-	OverrideVerkle *uint64
+	OverridePassedForkTime *uint64
+	OverrideBohr           *uint64
+	OverrideVerkle         *uint64
 }

 // SetupGenesisBlock writes or updates the genesis block in db.
@@ -243,6 +244,15 @@ func SetupGenesisBlockWithOverride(db ethdb.Database, triedb *triedb.Database, g
 	}
 	applyOverrides := func(config *params.ChainConfig) {
 		if config != nil {
+			if overrides != nil && overrides.OverridePassedForkTime != nil {
+				config.ShanghaiTime = overrides.OverridePassedForkTime
+				config.KeplerTime = overrides.OverridePassedForkTime
+				config.FeynmanTime = overrides.OverridePassedForkTime
+				config.FeynmanFixTime = overrides.OverridePassedForkTime
+				config.CancunTime = overrides.OverridePassedForkTime
+				config.HaberTime = overrides.OverridePassedForkTime
+				config.HaberFixTime = overrides.OverridePassedForkTime
+			}
 			if overrides != nil && overrides.OverrideBohr != nil {
 				config.BohrTime = overrides.OverrideBohr
 			}
@@ -444,7 +454,7 @@ func (g *Genesis) ToBlock() *types.Block {
 			// EIP-4788: The parentBeaconBlockRoot of the genesis block is always
 			// the zero hash. This is because the genesis block does not have a parent
 			// by definition.
-			if conf.Parlia == nil {
+			if conf.Parlia == nil || conf.IsBohr(num, g.Timestamp) {
 				head.ParentBeaconRoot = new(common.Hash)
 			}

--- a/core/headerchain.go
+++ b/core/headerchain.go
@@ -436,6 +436,10 @@ func (hc *HeaderChain) GetHighestVerifiedHeader() *types.Header {
 	return nil
 }

+func (hc *HeaderChain) GetVerifiedBlockByHash(hash common.Hash) *types.Header {
+	return hc.GetHeaderByHash(hash)
+}
+
 func (hc *HeaderChain) ChasingHead() *types.Header {
 	return nil
 }
--- a/core/rawdb/accessors_trie.go
+++ b/core/rawdb/accessors_trie.go
@@ -46,6 +46,8 @@ const HashScheme = "hash"
 // on extra state diffs to survive deep reorg.
 const PathScheme = "path"

+const VersaScheme = "versa"
+
 // hasher is used to compute the sha256 hash of the provided data.
 type hasher struct{ sha crypto.KeccakState }

--- a/core/state/database.go
+++ b/core/state/database.go
@@ -195,6 +195,10 @@ func (db *cachingDB) OpenTrie(root common.Hash) (Trie, error) {
 	if db.triedb.IsVerkle() {
 		return trie.NewVerkleTrie(root, db.triedb, utils.NewPointCache(commitmentCacheItems))
 	}
+	// TODO, trie handler instead of tree pointer
+	if db.triedb.IsVersionedState() {
+		return trie.NewVersionTrie(root, db.triedb)
+	}
 	tr, err := trie.NewStateTrie(trie.StateTrieID(root), db.triedb)
 	if err != nil {
 		return nil, err
@@ -214,6 +218,10 @@ func (db *cachingDB) OpenStorageTrie(stateRoot common.Hash, address common.Addre
 	if db.triedb.IsVerkle() {
 		return self, nil
 	}
+	// TODO
+	if db.triedb.IsVersionedState() {
+		return trie.NewVersionTrie(root, db.triedb)
+	}
 	tr, err := trie.NewStateTrie(trie.StorageTrieID(stateRoot, crypto.Keccak256Hash(address.Bytes()), root), db.triedb)
 	if err != nil {
 		return nil, err
--- a/core/state_processor.go
+++ b/core/state_processor.go
@@ -231,6 +231,13 @@ func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *commo
 // ProcessBeaconBlockRoot applies the EIP-4788 system call to the beacon block root
 // contract. This method is exported to be used in tests.
 func ProcessBeaconBlockRoot(beaconRoot common.Hash, vmenv *vm.EVM, statedb *state.StateDB) {
+	// Return immediately if beaconRoot equals the zero hash when using the Parlia engine.
+	if beaconRoot == (common.Hash{}) {
+		if chainConfig := vmenv.ChainConfig(); chainConfig != nil && chainConfig.Parlia != nil {
+			return
+		}
+	}
+
 	// If EIP-4788 is enabled, we need to invoke the beaconroot storage contract with
 	// the new root
 	msg := &Message{
--- a/core/systemcontracts/bohr/chapel/StakeHubContract
+++ b/core/systemcontracts/bohr/chapel/StakeHubContract
--- a/core/systemcontracts/bohr/chapel/ValidatorContract
+++ b/core/systemcontracts/bohr/chapel/ValidatorContract
--- a/core/systemcontracts/bohr/mainnet/StakeHubContract
+++ b/core/systemcontracts/bohr/mainnet/StakeHubContract
--- a/core/systemcontracts/bohr/mainnet/ValidatorContract
+++ b/core/systemcontracts/bohr/mainnet/ValidatorContract
--- a/core/systemcontracts/bohr/rialto/StakeHubContract
+++ b/core/systemcontracts/bohr/rialto/StakeHubContract
--- a/core/systemcontracts/bohr/rialto/ValidatorContract
+++ b/core/systemcontracts/bohr/rialto/ValidatorContract
--- a/core/systemcontracts/bohr/types.go
+++ b/core/systemcontracts/bohr/types.go
@@ -0,0 +1,27 @@
+package bohr
+
+import _ "embed"
+
+// contract codes for Mainnet upgrade
+var (
+	//go:embed mainnet/ValidatorContract
+	MainnetValidatorContract string
+	//go:embed mainnet/StakeHubContract
+	MainnetStakeHubContract string
+)
+
+// contract codes for Chapel upgrade
+var (
+	//go:embed chapel/ValidatorContract
+	ChapelValidatorContract string
+	//go:embed chapel/StakeHubContract
+	ChapelStakeHubContract string
+)
+
+// contract codes for Rialto upgrade
+var (
+	//go:embed rialto/ValidatorContract
+	RialtoValidatorContract string
+	//go:embed rialto/StakeHubContract
+	RialtoStakeHubContract string
+)
--- a/core/systemcontracts/upgrade.go
+++ b/core/systemcontracts/upgrade.go
@@ -8,6 +8,7 @@ import (

 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/core/systemcontracts/bohr"
 	"github.com/ethereum/go-ethereum/core/systemcontracts/bruno"
 	"github.com/ethereum/go-ethereum/core/systemcontracts/euler"
 	"github.com/ethereum/go-ethereum/core/systemcontracts/feynman"
@@ -78,6 +79,8 @@ var (
 	feynmanFixUpgrade = make(map[string]*Upgrade)

 	haberFixUpgrade = make(map[string]*Upgrade)
+
+	bohrUpgrade = make(map[string]*Upgrade)
 )

 func init() {
@@ -736,6 +739,54 @@ func init() {
 			},
 		},
 	}
+
+	bohrUpgrade[mainNet] = &Upgrade{
+		UpgradeName: "bohr",
+		Configs: []*UpgradeConfig{
+			{
+				ContractAddr: common.HexToAddress(ValidatorContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/398c9364aad5261c1ecd90ac3ab2df89b65c45e3",
+				Code:         bohr.MainnetValidatorContract,
+			},
+			{
+				ContractAddr: common.HexToAddress(StakeHubContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/398c9364aad5261c1ecd90ac3ab2df89b65c45e3",
+				Code:         bohr.MainnetStakeHubContract,
+			},
+		},
+	}
+
+	bohrUpgrade[chapelNet] = &Upgrade{
+		UpgradeName: "bohr",
+		Configs: []*UpgradeConfig{
+			{
+				ContractAddr: common.HexToAddress(ValidatorContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/398c9364aad5261c1ecd90ac3ab2df89b65c45e3",
+				Code:         bohr.ChapelValidatorContract,
+			},
+			{
+				ContractAddr: common.HexToAddress(StakeHubContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/398c9364aad5261c1ecd90ac3ab2df89b65c45e3",
+				Code:         bohr.ChapelStakeHubContract,
+			},
+		},
+	}
+
+	bohrUpgrade[rialtoNet] = &Upgrade{
+		UpgradeName: "bohr",
+		Configs: []*UpgradeConfig{
+			{
+				ContractAddr: common.HexToAddress(ValidatorContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/398c9364aad5261c1ecd90ac3ab2df89b65c45e3",
+				Code:         bohr.RialtoValidatorContract,
+			},
+			{
+				ContractAddr: common.HexToAddress(StakeHubContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/398c9364aad5261c1ecd90ac3ab2df89b65c45e3",
+				Code:         bohr.RialtoStakeHubContract,
+			},
+		},
+	}
 }

 func UpgradeBuildInSystemContract(config *params.ChainConfig, blockNumber *big.Int, lastBlockTime uint64, blockTime uint64, statedb *state.StateDB) {
@@ -816,6 +867,10 @@ func UpgradeBuildInSystemContract(config *params.ChainConfig, blockNumber *big.I
 		applySystemContractUpgrade(haberFixUpgrade[network], blockNumber, statedb, logger)
 	}

+	if config.IsOnBohr(blockNumber, lastBlockTime, blockTime) {
+		applySystemContractUpgrade(bohrUpgrade[network], blockNumber, statedb, logger)
+	}
+
 	/*
 		apply other upgrades
 	*/
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -673,10 +673,7 @@ type DiffAccountsInBlock struct {
 	Transactions []DiffAccountsInTx
 }

-var (
-	extraVanity = 32 // Fixed number of extra-data prefix bytes reserved for signer vanity
-	extraSeal   = 65 // Fixed number of extra-data suffix bytes reserved for signer seal
-)
+var extraSeal = 65 // Fixed number of extra-data suffix bytes reserved for signer seal

 // SealHash returns the hash of a block prior to it being sealed.
 func SealHash(header *Header, chainId *big.Int) (hash common.Hash) {
@@ -687,48 +684,51 @@ func SealHash(header *Header, chainId *big.Int) (hash common.Hash) {
 }

 func EncodeSigHeader(w io.Writer, header *Header, chainId *big.Int) {
-	err := rlp.Encode(w, []interface{}{
-		chainId,
-		header.ParentHash,
-		header.UncleHash,
-		header.Coinbase,
-		header.Root,
-		header.TxHash,
-		header.ReceiptHash,
-		header.Bloom,
-		header.Difficulty,
-		header.Number,
-		header.GasLimit,
-		header.GasUsed,
-		header.Time,
-		header.Extra[:len(header.Extra)-extraSeal], // this will panic if extra is too short, should check before calling encodeSigHeader
-		header.MixDigest,
-		header.Nonce,
-	})
-	if err != nil {
-		panic("can't encode: " + err.Error())
-	}
-}
-
-func EncodeSigHeaderWithoutVoteAttestation(w io.Writer, header *Header, chainId *big.Int) {
-	err := rlp.Encode(w, []interface{}{
-		chainId,
-		header.ParentHash,
-		header.UncleHash,
-		header.Coinbase,
-		header.Root,
-		header.TxHash,
-		header.ReceiptHash,
-		header.Bloom,
-		header.Difficulty,
-		header.Number,
-		header.GasLimit,
-		header.GasUsed,
-		header.Time,
-		header.Extra[:extraVanity], // this will panic if extra is too short, should check before calling encodeSigHeaderWithoutVoteAttestation
-		header.MixDigest,
-		header.Nonce,
-	})
+	var err error
+	if header.ParentBeaconRoot != nil && *header.ParentBeaconRoot == (common.Hash{}) {
+		err = rlp.Encode(w, []interface{}{
+			chainId,
+			header.ParentHash,
+			header.UncleHash,
+			header.Coinbase,
+			header.Root,
+			header.TxHash,
+			header.ReceiptHash,
+			header.Bloom,
+			header.Difficulty,
+			header.Number,
+			header.GasLimit,
+			header.GasUsed,
+			header.Time,
+			header.Extra[:len(header.Extra)-extraSeal], // this will panic if extra is too short, should check before calling encodeSigHeader
+			header.MixDigest,
+			header.Nonce,
+			header.BaseFee,
+			header.WithdrawalsHash,
+			header.BlobGasUsed,
+			header.ExcessBlobGas,
+			header.ParentBeaconRoot,
+		})
+	} else {
+		err = rlp.Encode(w, []interface{}{
+			chainId,
+			header.ParentHash,
+			header.UncleHash,
+			header.Coinbase,
+			header.Root,
+			header.TxHash,
+			header.ReceiptHash,
+			header.Bloom,
+			header.Difficulty,
+			header.Number,
+			header.GasLimit,
+			header.GasUsed,
+			header.Time,
+			header.Extra[:len(header.Extra)-extraSeal], // this will panic if extra is too short, should check before calling encodeSigHeader
+			header.MixDigest,
+			header.Nonce,
+		})
+	}
 	if err != nil {
 		panic("can't encode: " + err.Error())
 	}
--- a/core/vote/vote_manager.go
+++ b/core/vote/vote_manager.go
@@ -3,6 +3,7 @@ package vote
 import (
 	"bytes"
 	"fmt"
+	"math/big"
 	"sync"
 	"time"

@@ -19,7 +20,13 @@ import (

 const blocksNumberSinceMining = 5 // the number of blocks need to wait before voting, counting from the validator begin to mine

+var diffInTurn = big.NewInt(2) // Block difficulty for in-turn signatures
 var votesManagerCounter = metrics.NewRegisteredCounter("votesManager/local", nil)
+var notJustified = metrics.NewRegisteredCounter("votesManager/notJustified", nil)
+var inTurnJustified = metrics.NewRegisteredCounter("votesManager/inTurnJustified", nil)
+var notInTurnJustified = metrics.NewRegisteredCounter("votesManager/notInTurnJustified", nil)
+var continuousJustified = metrics.NewRegisteredCounter("votesManager/continuousJustified", nil)
+var notContinuousJustified = metrics.NewRegisteredCounter("votesManager/notContinuousJustified", nil)

 // Backend wraps all methods required for voting.
 type Backend interface {
@@ -33,8 +40,8 @@ type VoteManager struct {

 	chain *core.BlockChain

-	chainHeadCh  chan core.ChainHeadEvent
-	chainHeadSub event.Subscription
+	highestVerifiedBlockCh  chan core.HighestVerifiedBlockEvent
+	highestVerifiedBlockSub event.Subscription

 	// used for backup validators to sync votes from corresponding mining validator
 	syncVoteCh  chan core.NewVoteEvent
@@ -49,12 +56,12 @@ type VoteManager struct {

 func NewVoteManager(eth Backend, chain *core.BlockChain, pool *VotePool, journalPath, blsPasswordPath, blsWalletPath string, engine consensus.PoSA) (*VoteManager, error) {
 	voteManager := &VoteManager{
-		eth:         eth,
-		chain:       chain,
-		chainHeadCh: make(chan core.ChainHeadEvent, chainHeadChanSize),
-		syncVoteCh:  make(chan core.NewVoteEvent, voteBufferForPut),
-		pool:        pool,
-		engine:      engine,
+		eth:                    eth,
+		chain:                  chain,
+		highestVerifiedBlockCh: make(chan core.HighestVerifiedBlockEvent, highestVerifiedBlockChanSize),
+		syncVoteCh:             make(chan core.NewVoteEvent, voteBufferForPut),
+		pool:                   pool,
+		engine:                 engine,
 	}

 	// Create voteSigner.
@@ -74,7 +81,7 @@ func NewVoteManager(eth Backend, chain *core.BlockChain, pool *VotePool, journal
 	voteManager.journal = voteJournal

 	// Subscribe to chain head event.
-	voteManager.chainHeadSub = voteManager.chain.SubscribeChainHeadEvent(voteManager.chainHeadCh)
+	voteManager.highestVerifiedBlockSub = voteManager.chain.SubscribeHighestVerifiedHeaderEvent(voteManager.highestVerifiedBlockCh)
 	voteManager.syncVoteSub = voteManager.pool.SubscribeNewVoteEvent(voteManager.syncVoteCh)

 	go voteManager.loop()
@@ -84,7 +91,7 @@ func NewVoteManager(eth Backend, chain *core.BlockChain, pool *VotePool, journal

 func (voteManager *VoteManager) loop() {
 	log.Debug("vote manager routine loop started")
-	defer voteManager.chainHeadSub.Unsubscribe()
+	defer voteManager.highestVerifiedBlockSub.Unsubscribe()
 	defer voteManager.syncVoteSub.Unsubscribe()

 	events := voteManager.eth.EventMux().Subscribe(downloader.StartEvent{}, downloader.DoneEvent{}, downloader.FailedEvent{})
@@ -119,7 +126,7 @@ func (voteManager *VoteManager) loop() {
 				log.Debug("downloader is in DoneEvent mode, set the startVote flag to true")
 				startVote = true
 			}
-		case cHead := <-voteManager.chainHeadCh:
+		case cHead := <-voteManager.highestVerifiedBlockCh:
 			if !startVote {
 				log.Debug("startVote flag is false, continue")
 				continue
@@ -135,12 +142,12 @@ func (voteManager *VoteManager) loop() {
 				continue
 			}

-			if cHead.Block == nil {
-				log.Debug("cHead.Block is nil, continue")
+			if cHead.Header == nil {
+				log.Debug("cHead.Header is nil, continue")
 				continue
 			}

-			curHead := cHead.Block.Header()
+			curHead := cHead.Header
 			if p, ok := voteManager.engine.(*parlia.Parlia); ok {
 				nextBlockMinedTime := time.Unix(int64((curHead.Time + p.Period())), 0)
 				timeForBroadcast := 50 * time.Millisecond // enough to broadcast a vote
@@ -155,7 +162,7 @@ func (voteManager *VoteManager) loop() {
 				func(bLSPublicKey *types.BLSPublicKey) bool {
 					return bytes.Equal(voteManager.signer.PubKey[:], bLSPublicKey[:])
 				}) {
-				log.Debug("cur validator is not within the validatorSet at curHead")
+				log.Debug("local validator with voteKey is not within the validatorSet at curHead")
 				continue
 			}

@@ -202,6 +209,36 @@ func (voteManager *VoteManager) loop() {
 				voteManager.pool.PutVote(voteMessage)
 				votesManagerCounter.Inc(1)
 			}
+
+			// check the latest justified block, which indicating the stability of the network
+			curJustifiedNumber, _, err := voteManager.engine.GetJustifiedNumberAndHash(voteManager.chain, []*types.Header{curHead})
+			if err == nil && curJustifiedNumber != 0 {
+				if curJustifiedNumber+1 != curHead.Number.Uint64() {
+					log.Debug("not justified", "blockNumber", curHead.Number.Uint64()-1)
+					notJustified.Inc(1)
+				} else {
+					parent := voteManager.chain.GetHeaderByHash(curHead.ParentHash)
+					if parent != nil {
+						if parent.Difficulty.Cmp(diffInTurn) == 0 {
+							inTurnJustified.Inc(1)
+						} else {
+							log.Debug("not in turn block justified", "blockNumber", parent.Number.Int64(), "blockHash", parent.Hash())
+							notInTurnJustified.Inc(1)
+						}
+
+						lastJustifiedNumber, _, err := voteManager.engine.GetJustifiedNumberAndHash(voteManager.chain, []*types.Header{parent})
+						if err == nil {
+							if lastJustifiedNumber == 0 || lastJustifiedNumber+1 == curJustifiedNumber {
+								continuousJustified.Inc(1)
+							} else {
+								log.Debug("not continuous block justified", "lastJustified", lastJustifiedNumber, "curJustified", curJustifiedNumber)
+								notContinuousJustified.Inc(1)
+							}
+						}
+					}
+				}
+			}
+
 		case event := <-voteManager.syncVoteCh:
 			voteMessage := event.Vote
 			if voteManager.eth.IsMining() || !bytes.Equal(voteManager.signer.PubKey[:], voteMessage.VoteAddress[:]) {
@@ -217,7 +254,7 @@ func (voteManager *VoteManager) loop() {
 		case <-voteManager.syncVoteSub.Err():
 			log.Debug("voteManager subscribed votes failed")
 			return
-		case <-voteManager.chainHeadSub.Err():
+		case <-voteManager.highestVerifiedBlockSub.Err():
 			log.Debug("voteManager subscribed chainHead failed")
 			return
 		}
--- a/core/vote/vote_pool.go
+++ b/core/vote/vote_pool.go
@@ -24,7 +24,7 @@ const (
 	lowerLimitOfVoteBlockNumber = 256
 	upperLimitOfVoteBlockNumber = 11 // refer to fetcher.maxUncleDist

-	chainHeadChanSize = 10 // chainHeadChanSize is the size of channel listening to ChainHeadEvent.
+	highestVerifiedBlockChanSize = 10 // highestVerifiedBlockChanSize is the size of channel listening to HighestVerifiedBlockEvent.
 )

 var (
@@ -57,8 +57,8 @@ type VotePool struct {
 	curVotesPq    *votesPriorityQueue
 	futureVotesPq *votesPriorityQueue

-	chainHeadCh  chan core.ChainHeadEvent
-	chainHeadSub event.Subscription
+	highestVerifiedBlockCh  chan core.HighestVerifiedBlockEvent
+	highestVerifiedBlockSub event.Subscription

 	votesCh chan *types.VoteEnvelope

@@ -69,19 +69,19 @@ type votesPriorityQueue []*types.VoteData

 func NewVotePool(chain *core.BlockChain, engine consensus.PoSA) *VotePool {
 	votePool := &VotePool{
-		chain:         chain,
-		receivedVotes: mapset.NewSet[common.Hash](),
-		curVotes:      make(map[common.Hash]*VoteBox),
-		futureVotes:   make(map[common.Hash]*VoteBox),
-		curVotesPq:    &votesPriorityQueue{},
-		futureVotesPq: &votesPriorityQueue{},
-		chainHeadCh:   make(chan core.ChainHeadEvent, chainHeadChanSize),
-		votesCh:       make(chan *types.VoteEnvelope, voteBufferForPut),
-		engine:        engine,
+		chain:                  chain,
+		receivedVotes:          mapset.NewSet[common.Hash](),
+		curVotes:               make(map[common.Hash]*VoteBox),
+		futureVotes:            make(map[common.Hash]*VoteBox),
+		curVotesPq:             &votesPriorityQueue{},
+		futureVotesPq:          &votesPriorityQueue{},
+		highestVerifiedBlockCh: make(chan core.HighestVerifiedBlockEvent, highestVerifiedBlockChanSize),
+		votesCh:                make(chan *types.VoteEnvelope, voteBufferForPut),
+		engine:                 engine,
 	}

 	// Subscribe events from blockchain and start the main event loop.
-	votePool.chainHeadSub = votePool.chain.SubscribeChainHeadEvent(votePool.chainHeadCh)
+	votePool.highestVerifiedBlockSub = votePool.chain.SubscribeHighestVerifiedHeaderEvent(votePool.highestVerifiedBlockCh)

 	go votePool.loop()
 	return votePool
@@ -89,18 +89,18 @@ func NewVotePool(chain *core.BlockChain, engine consensus.PoSA) *VotePool {

 // loop is the vote pool's main even loop, waiting for and reacting to outside blockchain events and votes channel event.
 func (pool *VotePool) loop() {
-	defer pool.chainHeadSub.Unsubscribe()
+	defer pool.highestVerifiedBlockSub.Unsubscribe()

 	for {
 		select {
 		// Handle ChainHeadEvent.
-		case ev := <-pool.chainHeadCh:
-			if ev.Block != nil {
-				latestBlockNumber := ev.Block.NumberU64()
+		case ev := <-pool.highestVerifiedBlockCh:
+			if ev.Header != nil {
+				latestBlockNumber := ev.Header.Number.Uint64()
 				pool.prune(latestBlockNumber)
-				pool.transferVotesFromFutureToCur(ev.Block.Header())
+				pool.transferVotesFromFutureToCur(ev.Header)
 			}
-		case <-pool.chainHeadSub.Err():
+		case <-pool.highestVerifiedBlockSub.Err():
 			return

 		// Handle votes channel and put the vote into vote pool.
@@ -135,7 +135,7 @@ func (pool *VotePool) putIntoVotePool(vote *types.VoteEnvelope) bool {
 	var votesPq *votesPriorityQueue
 	isFutureVote := false

-	voteBlock := pool.chain.GetHeaderByHash(targetHash)
+	voteBlock := pool.chain.GetVerifiedBlockByHash(targetHash)
 	if voteBlock == nil {
 		votes = pool.futureVotes
 		votesPq = pool.futureVotesPq
@@ -226,7 +226,7 @@ func (pool *VotePool) transferVotesFromFutureToCur(latestBlockHeader *types.Head
 	futurePqBuffer := make([]*types.VoteData, 0)
 	for futurePq.Len() > 0 && futurePq.Peek().TargetNumber <= latestBlockNumber {
 		blockHash := futurePq.Peek().TargetHash
-		header := pool.chain.GetHeaderByHash(blockHash)
+		header := pool.chain.GetVerifiedBlockByHash(blockHash)
 		if header == nil {
 			// Put into pq buffer used for later put again into futurePq
 			futurePqBuffer = append(futurePqBuffer, heap.Pop(futurePq).(*types.VoteData))
--- a/eth/api_backend.go
+++ b/eth/api_backend.go
@@ -26,6 +26,7 @@ import (
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/consensus/parlia"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/bloombits"
 	"github.com/ethereum/go-ethereum/core/rawdb"
@@ -440,6 +441,16 @@ func (b *EthAPIBackend) Engine() consensus.Engine {
 	return b.eth.engine
 }

+func (b *EthAPIBackend) CurrentTurnLength() (turnLength uint8, err error) {
+	if p, ok := b.eth.engine.(*parlia.Parlia); ok {
+		service := p.APIs(b.Chain())[0].Service
+		currentHead := rpc.LatestBlockNumber
+		return service.(*parlia.API).GetTurnLength(&currentHead)
+	}
+
+	return 1, nil
+}
+
 func (b *EthAPIBackend) CurrentHeader() *types.Header {
 	return b.eth.blockchain.CurrentHeader()
 }
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -185,6 +185,16 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 	}
 	// Override the chain config with provided settings.
 	var overrides core.ChainOverrides
+	if config.OverridePassedForkTime != nil {
+		chainConfig.ShanghaiTime = config.OverridePassedForkTime
+		chainConfig.KeplerTime = config.OverridePassedForkTime
+		chainConfig.FeynmanTime = config.OverridePassedForkTime
+		chainConfig.FeynmanFixTime = config.OverridePassedForkTime
+		chainConfig.CancunTime = config.OverridePassedForkTime
+		chainConfig.HaberTime = config.OverridePassedForkTime
+		chainConfig.HaberFixTime = config.OverridePassedForkTime
+		overrides.OverridePassedForkTime = config.OverridePassedForkTime
+	}
 	if config.OverrideBohr != nil {
 		chainConfig.BohrTime = config.OverrideBohr
 		overrides.OverrideBohr = config.OverrideBohr
--- a/eth/ethconfig/config.go
+++ b/eth/ethconfig/config.go
@@ -188,6 +188,9 @@ type Config struct {
 	// send-transaction variants. The unit is ether.
 	RPCTxFeeCap float64

+	// OverridePassedForkTime
+	OverridePassedForkTime *uint64 `toml:",omitempty"`
+
 	// OverrideBohr (TODO: remove after the fork)
 	OverrideBohr *uint64 `toml:",omitempty"`

--- a/eth/ethconfig/gen_config.go
+++ b/eth/ethconfig/gen_config.go
@@ -70,6 +70,7 @@ func (c Config) MarshalTOML() (interface{}, error) {
 		RPCGasCap               uint64
 		RPCEVMTimeout           time.Duration
 		RPCTxFeeCap             float64
+		OverridePassedForkTime      *uint64 `toml:",omitempty"`
 		OverrideBohr            *uint64 `toml:",omitempty"`
 		OverrideVerkle          *uint64 `toml:",omitempty"`
 		BlobExtraReserve        uint64
@@ -128,6 +129,7 @@ func (c Config) MarshalTOML() (interface{}, error) {
 	enc.RPCGasCap = c.RPCGasCap
 	enc.RPCEVMTimeout = c.RPCEVMTimeout
 	enc.RPCTxFeeCap = c.RPCTxFeeCap
+	enc.OverridePassedForkTime = c.OverridePassedForkTime
 	enc.OverrideBohr = c.OverrideBohr
 	enc.OverrideVerkle = c.OverrideVerkle
 	enc.BlobExtraReserve = c.BlobExtraReserve
@@ -190,6 +192,7 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 		RPCGasCap               *uint64
 		RPCEVMTimeout           *time.Duration
 		RPCTxFeeCap             *float64
+		OverridePassedForkTime      *uint64 `toml:",omitempty"`
 		OverrideBohr            *uint64 `toml:",omitempty"`
 		OverrideVerkle          *uint64 `toml:",omitempty"`
 		BlobExtraReserve        *uint64
@@ -357,6 +360,9 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 	if dec.RPCTxFeeCap != nil {
 		c.RPCTxFeeCap = *dec.RPCTxFeeCap
 	}
+	if dec.OverridePassedForkTime != nil {
+		c.OverridePassedForkTime = dec.OverridePassedForkTime
+	}
 	if dec.OverrideBohr != nil {
 		c.OverrideBohr = dec.OverrideBohr
 	}
--- a/eth/filters/filter_system_test.go
+++ b/eth/filters/filter_system_test.go
@@ -436,7 +436,7 @@ func TestInvalidLogFilterCreation(t *testing.T) {
 	}
 }

-// TestLogFilterUninstall tests invalid getLogs requests
+// TestInvalidGetLogsRequest tests invalid getLogs requests
 func TestInvalidGetLogsRequest(t *testing.T) {
 	t.Parallel()

--- a/eth/protocols/eth/dispatcher.go
+++ b/eth/protocols/eth/dispatcher.go
@@ -136,7 +136,7 @@ func (p *Peer) dispatchRequest(req *Request) error {
 	}
 }

-// dispatchRequest fulfils a pending request and delivers it to the requested
+// dispatchResponse fulfils a pending request and delivers it to the requested
 // sink.
 func (p *Peer) dispatchResponse(res *Response, metadata func() interface{}) error {
 	resOp := &response{
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -361,7 +361,7 @@ func (ec *Client) TransactionInBlock(ctx context.Context, blockHash common.Hash,
 	return json.tx, err
 }

-// TransactionInBlock returns a single transaction at index in the given block.
+// TransactionsInBlock returns a single transaction at index in the given block.
 func (ec *Client) TransactionsInBlock(ctx context.Context, number *big.Int) ([]*types.Transaction, error) {
 	var rpcTxs []*rpcTransaction
 	err := ec.c.CallContext(ctx, &rpcTxs, "eth_getTransactionsByBlockNumber", toBlockNumArg(number))
@@ -376,7 +376,7 @@ func (ec *Client) TransactionsInBlock(ctx context.Context, number *big.Int) ([]*
 	return txs, err
 }

-// TransactionInBlock returns a single transaction at index in the given block.
+// TransactionRecipientsInBlock returns a single transaction at index in the given block.
 func (ec *Client) TransactionRecipientsInBlock(ctx context.Context, number *big.Int) ([]*types.Receipt, error) {
 	var rs []*types.Receipt
 	err := ec.c.CallContext(ctx, &rs, "eth_getTransactionReceiptsByBlockNumber", toBlockNumArg(number))
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -870,7 +870,10 @@ func (s *BlockChainAPI) GetFinalizedHeader(ctx context.Context, probabilisticFin
 		return nil, fmt.Errorf("%d out of range [2,21]", probabilisticFinalized)
 	}

-	var err error
+	currentTurnLength, err := s.b.CurrentTurnLength()
+	if err != nil { // impossible
+		return nil, err
+	}
 	fastFinalizedHeader, err := s.b.HeaderByNumber(ctx, rpc.FinalizedBlockNumber)
 	if err != nil { // impossible
 		return nil, err
@@ -879,7 +882,7 @@ func (s *BlockChainAPI) GetFinalizedHeader(ctx context.Context, probabilisticFin
 	if err != nil { // impossible
 		return nil, err
 	}
-	finalizedBlockNumber := max(fastFinalizedHeader.Number.Int64(), latestHeader.Number.Int64()-probabilisticFinalized)
+	finalizedBlockNumber := max(fastFinalizedHeader.Number.Int64(), latestHeader.Number.Int64()-probabilisticFinalized*int64(currentTurnLength))

 	return s.GetHeaderByNumber(ctx, rpc.BlockNumber(finalizedBlockNumber))
 }
@@ -894,7 +897,10 @@ func (s *BlockChainAPI) GetFinalizedBlock(ctx context.Context, probabilisticFina
 		return nil, fmt.Errorf("%d out of range [2,21]", probabilisticFinalized)
 	}

-	var err error
+	currentTurnLength, err := s.b.CurrentTurnLength()
+	if err != nil { // impossible
+		return nil, err
+	}
 	fastFinalizedHeader, err := s.b.HeaderByNumber(ctx, rpc.FinalizedBlockNumber)
 	if err != nil { // impossible
 		return nil, err
@@ -903,7 +909,7 @@ func (s *BlockChainAPI) GetFinalizedBlock(ctx context.Context, probabilisticFina
 	if err != nil { // impossible
 		return nil, err
 	}
-	finalizedBlockNumber := max(fastFinalizedHeader.Number.Int64(), latestHeader.Number.Int64()-probabilisticFinalized)
+	finalizedBlockNumber := max(fastFinalizedHeader.Number.Int64(), latestHeader.Number.Int64()-probabilisticFinalized*int64(currentTurnLength))

 	return s.GetBlockByNumber(ctx, rpc.BlockNumber(finalizedBlockNumber), fullTx)
 }
--- a/internal/ethapi/api_test.go
+++ b/internal/ethapi/api_test.go
@@ -631,8 +631,9 @@ func (b testBackend) TxPoolContentFrom(addr common.Address) ([]*types.Transactio
 func (b testBackend) SubscribeNewTxsEvent(events chan<- core.NewTxsEvent) event.Subscription {
 	panic("implement me")
 }
-func (b testBackend) ChainConfig() *params.ChainConfig { return b.chain.Config() }
-func (b testBackend) Engine() consensus.Engine         { return b.chain.Engine() }
+func (b testBackend) ChainConfig() *params.ChainConfig  { return b.chain.Config() }
+func (b testBackend) Engine() consensus.Engine          { return b.chain.Engine() }
+func (b testBackend) CurrentTurnLength() (uint8, error) { return 1, nil }
 func (b testBackend) GetLogs(ctx context.Context, blockHash common.Hash, number uint64) ([][]*types.Log, error) {
 	panic("implement me")
 }
--- a/internal/ethapi/backend.go
+++ b/internal/ethapi/backend.go
@@ -89,6 +89,8 @@ type Backend interface {

 	ChainConfig() *params.ChainConfig
 	Engine() consensus.Engine
+	// CurrentTurnLength return the turnLength at the latest block
+	CurrentTurnLength() (uint8, error)

 	// This is copied from filters.Backend
 	// eth/filters needs to be initialized from this backend type, so methods needed by
--- a/internal/ethapi/transaction_args_test.go
+++ b/internal/ethapi/transaction_args_test.go
@@ -416,6 +416,8 @@ func (b *backendMock) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent)

 func (b *backendMock) Engine() consensus.Engine { return nil }

+func (b *backendMock) CurrentTurnLength() (uint8, error) { return 1, nil }
+
 func (b *backendMock) MevRunning() bool                       { return false }
 func (b *backendMock) HasBuilder(builder common.Address) bool { return false }
 func (b *backendMock) MevParams() *types.MevParams {
--- a/miner/bid_simulator.go
+++ b/miner/bid_simulator.go
@@ -18,6 +18,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/bidutil"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/txpool"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
@@ -82,6 +83,7 @@ type bidSimulator struct {
 	delayLeftOver time.Duration
 	minGasPrice   *big.Int
 	chain         *core.BlockChain
+	txpool        *txpool.TxPool
 	chainConfig   *params.ChainConfig
 	engine        consensus.Engine
 	bidWorker     bidWorker
@@ -118,7 +120,7 @@ func newBidSimulator(
 	config *MevConfig,
 	delayLeftOver time.Duration,
 	minGasPrice *big.Int,
-	chain *core.BlockChain,
+	eth Backend,
 	chainConfig *params.ChainConfig,
 	engine consensus.Engine,
 	bidWorker bidWorker,
@@ -127,7 +129,8 @@ func newBidSimulator(
 		config:        config,
 		delayLeftOver: delayLeftOver,
 		minGasPrice:   minGasPrice,
-		chain:         chain,
+		chain:         eth.BlockChain(),
+		txpool:        eth.TxPool(),
 		chainConfig:   chainConfig,
 		engine:        engine,
 		bidWorker:     bidWorker,
@@ -141,7 +144,7 @@ func newBidSimulator(
 		simulatingBid: make(map[common.Hash]*BidRuntime),
 	}

-	b.chainHeadSub = chain.SubscribeChainHeadEvent(b.chainHeadCh)
+	b.chainHeadSub = b.chain.SubscribeChainHeadEvent(b.chainHeadCh)

 	if config.Enabled {
 		b.bidReceiving.Store(true)
@@ -409,7 +412,7 @@ func (b *bidSimulator) clearLoop() {
 		}
 		delete(b.bestBid, parentHash)
 		for k, v := range b.bestBid {
-			if v.bid.BlockNumber <= blockNumber-core.TriesInMemory {
+			if v.bid.BlockNumber <= blockNumber-b.chain.TriesInMemory() {
 				v.env.discard()
 				delete(b.bestBid, k)
 			}
@@ -418,7 +421,7 @@ func (b *bidSimulator) clearLoop() {

 		b.simBidMu.Lock()
 		for k, v := range b.simulatingBid {
-			if v.bid.BlockNumber <= blockNumber-core.TriesInMemory {
+			if v.bid.BlockNumber <= blockNumber-b.chain.TriesInMemory() {
 				v.env.discard()
 				delete(b.simulatingBid, k)
 			}
@@ -625,16 +628,39 @@ func (b *bidSimulator) simBid(interruptCh chan int32, bidRuntime *BidRuntime) {
 	// check if bid gas price is lower than min gas price
 	{
 		bidGasUsed := uint64(0)
-		bidGasFee := bidRuntime.env.state.GetBalance(consensus.SystemAddress)
+		bidGasFee := big.NewInt(0)

-		for _, receipt := range bidRuntime.env.receipts {
-			bidGasUsed += receipt.GasUsed
+		for i, receipt := range bidRuntime.env.receipts {
+			tx := bidRuntime.env.txs[i]
+			if !b.txpool.Has(tx.Hash()) {
+				bidGasUsed += receipt.GasUsed
+				effectiveTip, er := tx.EffectiveGasTip(bidRuntime.env.header.BaseFee)
+				if er != nil {
+					err = errors.New("failed to calculate effective tip")
+					return
+				}
+
+				if bidRuntime.env.header.BaseFee != nil {
+					effectiveTip.Add(effectiveTip, bidRuntime.env.header.BaseFee)
+				}
+
+				gasFee := new(big.Int).Mul(effectiveTip, new(big.Int).SetUint64(receipt.GasUsed))
+				bidGasFee.Add(bidGasFee, gasFee)
+
+				if tx.Type() == types.BlobTxType {
+					blobFee := new(big.Int).Mul(receipt.BlobGasPrice, new(big.Int).SetUint64(receipt.BlobGasUsed))
+					bidGasFee.Add(bidGasFee, blobFee)
+				}
+			}
 		}

-		bidGasPrice := new(big.Int).Div(bidGasFee.ToBig(), new(big.Int).SetUint64(bidGasUsed))
-		if bidGasPrice.Cmp(b.minGasPrice) < 0 {
-			err = errors.New("bid gas price is lower than min gas price")
-			return
+		// if bid txs are all from mempool, do not check gas price
+		if bidGasUsed != 0 {
+			bidGasPrice := new(big.Int).Div(bidGasFee, new(big.Int).SetUint64(bidGasUsed))
+			if bidGasPrice.Cmp(b.minGasPrice) < 0 {
+				err = fmt.Errorf("bid gas price is lower than min gas price, bid:%v, min:%v", bidGasPrice, b.minGasPrice)
+				return
+			}
 		}
 	}

--- a/miner/miner.go
+++ b/miner/miner.go
@@ -102,7 +102,7 @@ func New(eth Backend, config *Config, chainConfig *params.ChainConfig, mux *even
 		worker:  newWorker(config, chainConfig, engine, eth, mux, isLocalBlock, false),
 	}

-	miner.bidSimulator = newBidSimulator(&config.Mev, config.DelayLeftOver, config.GasPrice, eth.BlockChain(), chainConfig, engine, miner.worker)
+	miner.bidSimulator = newBidSimulator(&config.Mev, config.DelayLeftOver, config.GasPrice, eth, chainConfig, engine, miner.worker)
 	miner.worker.setBestBidFetcher(miner.bidSimulator)

 	miner.wg.Add(1)
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -1032,6 +1032,8 @@ func (w *worker) prepareWork(genParams *generateParams) (*environment, error) {
 		}
 		if w.chainConfig.Parlia == nil {
 			header.ParentBeaconRoot = genParams.beaconRoot
+		} else if w.chainConfig.IsBohr(header.Number, header.Time) {
+			header.ParentBeaconRoot = new(common.Hash)
 		}
 	}
 	// Could potentially happen if starting to mine in an odd state.
--- a/params/protocol_params.go
+++ b/params/protocol_params.go
@@ -192,6 +192,11 @@ var (
 	MinBlocksForBlobRequests           uint64 = 524288              // it keeps blob data available for ~18.2 days in local, ref: https://github.com/bnb-chain/BEPs/blob/master/BEPs/BEP-336.md#51-parameters.
 	DefaultExtraReserveForBlobRequests uint64 = 1 * (24 * 3600) / 3 // it adds more time for expired blobs for some request cases, like expiry blob when remote peer is syncing, default 1 day.
 	BreatheBlockInterval               uint64 = 86400               // Controls the interval for updateValidatorSetV2
+	// used for testing:
+	//     [1,9] except 2 --> used as turn length directly
+	//                  2 --> use random values to test switching turn length
+	// 0 and other values --> get turn length from contract
+	FixedTurnLength uint64 = 0
 )

 // Gas discount table for BLS12-381 G1 and G2 multi exponentiation operations
--- a/tests/0001-diff-go-ethereum.patch
+++ b/tests/0001-diff-go-ethereum.patch
@@ -1,8 +1,19 @@
+From 32329440626abd6e9668c2d5bd2e7b719e951e01 Mon Sep 17 00:00:00 2001
+From: NathanBSC <Nathan.l@nodereal.io>
+Date: Wed, 31 Jul 2024 15:01:28 +0800
+Subject: [PATCH] diff go ethereum
+
+---
+ core/vm/contracts.go      | 10 ----------
+ core/vm/jump_table.go     |  2 +-
+ params/protocol_params.go |  2 +-
+ 3 files changed, 2 insertions(+), 12 deletions(-)
+
 diff --git a/core/vm/contracts.go b/core/vm/contracts.go
-index 5988bb15f..c92cbf542 100644
+index 38a6cac24..7eb29c3ed 100644
 --- a/core/vm/contracts.go
 +++ b/core/vm/contracts.go
-@@ -83,9 +83,6 @@ var PrecompiledContractsIstanbul = map[common.Address]PrecompiledContract{
+@@ -84,9 +84,6 @@ var PrecompiledContractsIstanbul = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{},
 	common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{},
 	common.BytesToAddress([]byte{9}): &blake2F{},
@@ -12,7 +23,7 @@ index 5988bb15f..c92cbf542 100644
 }
 
 var PrecompiledContractsNano = map[common.Address]PrecompiledContract{
-@@ -238,13 +235,6 @@ var PrecompiledContractsCancun = map[common.Address]PrecompiledContract{
+@@ -239,13 +236,6 @@ var PrecompiledContractsCancun = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{8}):    &bn256PairingIstanbul{},
 	common.BytesToAddress([]byte{9}):    &blake2F{},
 	common.BytesToAddress([]byte{0x0a}): &kzgPointEvaluation{},
@@ -25,7 +36,7 @@ index 5988bb15f..c92cbf542 100644
 -	common.BytesToAddress([]byte{105}): &secp256k1SignatureRecover{},
 }
 
- // PrecompiledContractsBLS contains the set of pre-compiled Ethereum
+ // PrecompiledContractsHaber contains the default set of pre-compiled Ethereum
 diff --git a/core/vm/jump_table.go b/core/vm/jump_table.go
 index 70c543f14..65716f944 100644
 --- a/core/vm/jump_table.go
@@ -40,7 +51,7 @@ index 70c543f14..65716f944 100644
 	enable3860(&instructionSet) // Limit and meter initcode
 
 diff --git a/params/protocol_params.go b/params/protocol_params.go
-index b84fa148f..97bf6c4d2 100644
+index 65b2d942c..bb085512f 100644
 --- a/params/protocol_params.go
 +++ b/params/protocol_params.go
@@ -23,7 +23,7 @@ import (
@@ -52,3 +63,6 @@ index b84fa148f..97bf6c4d2 100644
 	MinGasLimit          uint64 = 5000               // Minimum the gas limit may ever be.
 	MaxGasLimit          uint64 = 0x7fffffffffffffff // Maximum the gas limit (2^63-1).
 	GenesisGasLimit      uint64 = 4712388            // Gas limit of the Genesis block.
+-- 
+2.41.0
+
--- a/tests/run-evm-tests.sh
+++ b/tests/run-evm-tests.sh
@@ -11,4 +11,5 @@ echo "PASS",$PASS,"FAIL",$FAIL
 if [ $FAIL -ne 0 ]
 then
    cat fail.log
+    exit 1
 fi
--- a/trie/trie_id.go
+++ b/trie/trie_id.go
@@ -23,6 +23,7 @@ type ID struct {
 	StateRoot common.Hash // The root of the corresponding state(block.root)
 	Owner     common.Hash // The contract address hash which the trie belongs to
 	Root      common.Hash // The root hash of trie
+	Version   uint64      // The version of a Versa tree
 }

 // StateTrieID constructs an identifier for state trie with the provided state root.
--- a/trie/version_trie.go
+++ b/trie/version_trie.go
@@ -0,0 +1,119 @@
+package trie
+
+import (
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/triedb/database"
+)
+
+// VersionTrie is a wrapper around version state that implements the trie.Trie
+// interface so that version trees can be reused verbatim.
+type VersionTrie struct {
+	db     database.Database
+	reader *trieReader
+	//tree  TreeHandler
+}
+
+// NewVersionTrie constructs a version state tree based on the specified root hash.
+func NewVersionTrie(root common.Hash, db database.Database) (*VersionTrie, error) {
+	reader, err := newTrieReader(root, common.Hash{}, db)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO
+	// Open a tree
+	// tree, err := OpenTree(state StateHandler, version int64, owner common.Hash, root common.Hash)
+	if err != nil {
+		return nil, err
+	}
+
+	return &VersionTrie{
+		db:     db,
+		reader: reader,
+		// tree: tree,
+	}, nil
+}
+
+// GetKey returns the sha3 preimage of a hashed key that was previously used
+// to store a value.
+func (t *VersionTrie) GetKey(key []byte) []byte {
+	return key
+}
+
+// GetAccount implements state.Trie, retrieving the account with the specified
+// account address. If the specified account is not in the tree, nil will
+// be returned. If the tree is corrupted, an error will be returned.
+func (t *VersionTrie) GetAccount(address common.Address) (*types.StateAccount, error) {
+	// TODO
+}
+
+// GetStorage returns the value for key stored in the trie. The value bytes
+// must not be modified by the caller. If a node was not found in the database,
+// a trie.MissingNodeError is returned.
+func (t *VersionTrie) GetStorage(addr common.Address, key []byte) ([]byte, error) {
+	// TODO
+}
+
+// UpdateAccount abstracts an account write to the trie. It encodes the
+// provided account object with associated algorithm and then updates it
+// in the trie with provided address.
+func (t *VersionTrie) UpdateAccount(address common.Address, account *types.StateAccount) error {
+	// TODO
+}
+
+// UpdateStorage associates key with value in the trie. If value has length zero,
+// any existing value is deleted from the trie. The value bytes must not be modified
+// by the caller while they are stored in the trie. If a node was not found in the
+// database, a trie.MissingNodeError is returned.
+func (t *VersionTrie) UpdateStorage(addr common.Address, key, value []byte) error {
+	// TODO
+}
+
+// DeleteAccount abstracts an account deletion from the trie.
+func (t *VersionTrie) DeleteAccount(address common.Address) error {
+	// TODO
+}
+
+// DeleteStorage removes any existing value for key from the trie. If a node
+// was not found in the database, a trie.MissingNodeError is returned.
+func (t *VersionTrie) DeleteStorage(addr common.Address, key []byte) error {
+	// TODO
+}
+
+// UpdateContractCode abstracts code write to the trie. It is expected
+// to be moved to the stateWriter interface when the latter is ready.
+func (t *VersionTrie) UpdateContractCode(address common.Address, codeHash common.Hash, code []byte) error {
+	// TODO
+}
+
+// Hash returns the root hash of the trie. It does not write to the database and
+// can be used even if the trie doesn't have one.
+func (t *VersionTrie) Hash() common.Hash {
+	// TODO
+}
+
+// Commit collects all dirty nodes in the trie and replace them with the
+// corresponding node hash.
+func (t *VersionTrie) Commit(collectLeaf bool) (common.Hash, error) {
+	// TODO
+}
+
+// NodeIterator returns an iterator that returns nodes of the trie. Iteration
+// starts at the key after the given start key. And error will be returned
+// if fails to create node iterator.
+func (t *VersionTrie) NodeIterator(startKey []byte) (trie.NodeIterator, error) {
+	// TODO
+}
+
+// Prove constructs a Merkle proof for key. The result contains all encoded nodes
+// on the path to the value at key. The value itself is also included in the last
+// node and can be retrieved by verifying the proof.
+//
+// If the trie does not contain a value for key, the returned proof contains all
+// nodes of the longest existing prefix of the key (at least the root), ending
+// with the node that proves the absence of the key.
+func (t *VersionTrie) Prove(key []byte, proofDb ethdb.KeyValueWriter) error {
+	// TODO
+}
--- a/triedb/database.go
+++ b/triedb/database.go
@@ -18,6 +18,7 @@ package triedb

 import (
 	"errors"
+	"github.com/ethereum/go-ethereum/triedb/versadb"
 	"strings"

 	"github.com/ethereum/go-ethereum/common"
@@ -37,9 +38,11 @@ type Config struct {
 	Preimages bool // Flag whether the preimage of node key is recorded
 	Cache     int
 	NoTries   bool
-	IsVerkle  bool           // Flag whether the db is holding a verkle tree
-	HashDB    *hashdb.Config // Configs for hash-based scheme
-	PathDB    *pathdb.Config // Configs for experimental path-based scheme
+	IsVerkle  bool // Flag whether the db is holding a verkle tree
+	IsVersa   bool
+	HashDB    *hashdb.Config  // Configs for hash-based scheme
+	PathDB    *pathdb.Config  // Configs for experimental path-based scheme
+	VersaDB   *versadb.Config // TODO, Richard
 }

 // HashDefaults represents a config for using hash-based scheme with
@@ -148,6 +151,11 @@ func NewDatabase(diskdb ethdb.Database, config *Config) *Database {
 			config.PathDB = pathdb.Defaults
 		}
 		db.backend = pathdb.New(triediskdb, config.PathDB)
+	} else if strings.Compare(dbScheme, rawdb.VersaScheme) == 0 {
+		if config.VersaDB == nil {
+			config.VersaDB = versadb.Defaults
+		}
+		db.backend = versadb.New(triediskdb, config.VersaDB)
 	} else {
 		var resolver hashdb.ChildResolver
 		if config.IsVerkle {
@@ -409,3 +417,8 @@ func (db *Database) GetAllRooHash() [][]string {
 func (db *Database) IsVerkle() bool {
 	return db.config.IsVerkle
 }
+
+// IsVersionedState returns the indicator if the database is holding a versioned state.
+func (db *Database) IsVersionedState() bool {
+	return db.config.IsVersa
+}
--- a/triedb/versadb/database.go
+++ b/triedb/versadb/database.go
@@ -0,0 +1,82 @@
+package versadb
+
+import (
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/trie/trienode"
+	"github.com/ethereum/go-ethereum/trie/triestate"
+	"sync"
+)
+
+const (
+	// maxDiffLayers is the maximum diff layers allowed in the layer tree.
+	maxDiffLayers = 128
+)
+
+// Config contains the settings for database.
+type Config struct {
+	CleanCacheSize int // Maximum memory allowance (in bytes) for caching clean nodes
+}
+
+// Defaults is the default setting for database if it's not specified. ,
+var Defaults = &Config{
+	CleanCacheSize: 0,
+}
+
+type Database struct {
+	// readOnly is the flag whether the mutation is allowed to be applied.
+	// It will be set automatically when the database is journaled during
+	// the shutdown to reject all following unexpected mutations.
+	readOnly bool         // Flag if database is opened in read only mode
+	config   *Config      // Configuration for database
+	lock     sync.RWMutex // Lock to prevent mutations from happening at the same time
+}
+
+// New initializes the version state database.
+func New(diskdb ethdb.Database, config *Config) *Database {
+	if config == nil {
+		config = Defaults
+	}
+	// TODO
+	db := VersaDB.NewVersaDB(nil)
+	return db
+}
+
+// Scheme returns the identifier of used storage scheme.
+func (db *Database) Scheme() string {
+	return rawdb.VersaScheme
+}
+
+// Initialized returns an indicator if the state data is already initialized
+// according to the state scheme.
+func (db *Database) Initialized(genesisRoot common.Hash) bool {
+	// TODO
+}
+
+// Size returns the current storage size of the memory cache in front of the
+// persistent database layer.
+func (db *Database) Size() (common.StorageSize, common.StorageSize, common.StorageSize) {
+	// TODO
+}
+
+// Update performs a state transition by committing dirty nodes contained
+// in the given set in order to update state from the specified parent to
+// the specified root.
+//
+// The passed in maps(nodes, states) will be retained to avoid copying
+// everything. Therefore, these maps must not be changed afterwards.
+func (db *Database) Update(root common.Hash, parent common.Hash, block uint64, nodes *trienode.MergedNodeSet, states *triestate.Set) error {
+	// TODO
+}
+
+// Commit writes all relevant trie nodes belonging to the specified state
+// to disk. Report specifies whether logs will be displayed in info level.
+func (db *Database) Commit(root common.Hash, report bool) error {
+	// TODO
+}
+
+// Close closes the trie database backend and releases all held resources.
+func (db *Database) Close() error {
+	// TODO
+}
Author	SHA1	Message	Date
Rick975	d33ca4f108	initial version	2024-08-07 10:23:51 +08:00
zzzckck	b61128bd7b	utils: add GetTopAddr to analyse large traffic (#2629 )	2024-08-05 16:48:33 +08:00
buddho	df16ab95ab	Makefile: use docker compose v2 instead of v1 (#2628 )	2024-08-05 15:15:46 +08:00
Nathan	9e343669b5	core: not record `zero hash` beacon block root with Parlia engine (#2621 )	2024-07-31 16:39:24 +08:00
Nathan	987b8c1504	consensus/parlia: exclude inturn validator when calculate backoffTime (#2618 )	2024-07-31 16:37:50 +08:00
Nathan	7d907016ff	tests: fix evm-test CI (#2622 )	2024-07-31 15:50:43 +08:00
Satyajit Das	00cac12542	faucet: rate limit initial implementation (#2603 )	2024-07-29 13:36:42 +08:00
Ethan	27f618f434	fix: update stakehub bytecode after zero address agent issue fixed (#2614 )	2024-07-26 15:47:59 +08:00
irrun	46b88d11f9	fix: only take non-mempool tx to calculate bid price (#2579 )	2024-07-26 09:49:16 +08:00
yuhangcangqian	f532da6ca0	chore: fix some comments (#2597 ) Signed-off-by: yuhangcangqian <cuibuwei@qq.com>	2024-07-25 10:46:52 +08:00
zzzckck	c94fc290e7	Merge pull request #2612 from buddh0/merge_master_into_develop Merge master into develop	2024-07-25 10:44:24 +08:00
buddho	7f3c5ce4cd	cmd/utils: add new flag OverridePassedForkTime (#2611 )	2024-07-25 10:43:32 +08:00
Nathan	313449404f	consensus/parlia: modify mining time for last block in one turn (#2608 )	2024-07-25 10:42:42 +08:00
buddh0	99e4e950f8	Merge branch 'master' into develop	2024-07-25 10:20:23 +08:00
Ethan	cabd0f8a21	feat: add bohr upgrade contracts bytecode (#2605 ) * feat: add bohr upgrade contracts bytecode * feat: add bohr upgrade contracts bytecode on rialto network * feat: add protector for stakehub on rialto network	2024-07-24 10:29:01 +08:00
Nathan	17e0e45a09	BEP-341: Validators can produce consecutive blocks (#2482 )	2024-07-23 13:55:45 +08:00
Chris Li	6260a26971	fix: prune-state when specify `--triesInMemory 32` (#2602 )	2024-07-23 10:06:19 +08:00
Nathan	a44b6d8067	core: cache block after wroten into db (#2600 )	2024-07-22 20:52:07 +08:00
buddho	b844958a96	core: improve the network stability when double sign happens (#2596 )	2024-07-22 14:53:26 +08:00
buddho	3cade73e40	BEP-404: Clear Miner History when Switching Validators Set (#2558 )	2024-07-19 20:39:15 +08:00
buddho	4f38c78c6e	BEP-402: Complete Missing Fields in Block Header to Generate Signature (#2502 )	2024-07-19 20:32:19 +08:00
buddho	7b8d28b425	core/vote: vote before committing state and writing block (#2589 )	2024-07-19 20:23:45 +08:00
buddho	74078e1dc4	consensus/parlia: add GetJustifiedNumber and GetFinalizedNumber (#2591 )	2024-07-19 10:20:53 +08:00