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consensus/beacon, core/types: add verkle witness builder (#30129)

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This PR adds the bulk verkle witness+proof production at the end of block
production. It reads all data from the tree in one swoop and produces
a verkle proof.

Co-authored-by: Felix Lange <fjl@twurst.com>
This commit is contained in:
Guillaume Ballet 2024-08-29 14:50:27 +02:00 committed by GitHub
parent ea3b5095f4
commit e9467eec1c
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
11 changed files with 201 additions and 80 deletions
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74
beacon/engine/gen_ed.go
View File

@ -17,23 +17,24 @@ var _ = (*executableDataMarshaling)(nil)
// MarshalJSON marshals as JSON.
func (e ExecutableData) MarshalJSON() ([]byte, error) {
type ExecutableData struct {
ParentHash common.Hash `json:"parentHash" gencodec:"required"`
FeeRecipient common.Address `json:"feeRecipient" gencodec:"required"`
StateRoot common.Hash `json:"stateRoot" gencodec:"required"`
ReceiptsRoot common.Hash `json:"receiptsRoot" gencodec:"required"`
LogsBloom hexutil.Bytes `json:"logsBloom" gencodec:"required"`
Random common.Hash `json:"prevRandao" gencodec:"required"`
Number hexutil.Uint64 `json:"blockNumber" gencodec:"required"`
GasLimit hexutil.Uint64 `json:"gasLimit" gencodec:"required"`
GasUsed hexutil.Uint64 `json:"gasUsed" gencodec:"required"`
Timestamp hexutil.Uint64 `json:"timestamp" gencodec:"required"`
ExtraData hexutil.Bytes `json:"extraData" gencodec:"required"`
BaseFeePerGas *hexutil.Big `json:"baseFeePerGas" gencodec:"required"`
BlockHash common.Hash `json:"blockHash" gencodec:"required"`
Transactions []hexutil.Bytes `json:"transactions" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BlobGasUsed *hexutil.Uint64 `json:"blobGasUsed"`
ExcessBlobGas *hexutil.Uint64 `json:"excessBlobGas"`
ParentHash common.Hash `json:"parentHash" gencodec:"required"`
FeeRecipient common.Address `json:"feeRecipient" gencodec:"required"`
StateRoot common.Hash `json:"stateRoot" gencodec:"required"`
ReceiptsRoot common.Hash `json:"receiptsRoot" gencodec:"required"`
LogsBloom hexutil.Bytes `json:"logsBloom" gencodec:"required"`
Random common.Hash `json:"prevRandao" gencodec:"required"`
Number hexutil.Uint64 `json:"blockNumber" gencodec:"required"`
GasLimit hexutil.Uint64 `json:"gasLimit" gencodec:"required"`
GasUsed hexutil.Uint64 `json:"gasUsed" gencodec:"required"`
Timestamp hexutil.Uint64 `json:"timestamp" gencodec:"required"`
ExtraData hexutil.Bytes `json:"extraData" gencodec:"required"`
BaseFeePerGas *hexutil.Big `json:"baseFeePerGas" gencodec:"required"`
BlockHash common.Hash `json:"blockHash" gencodec:"required"`
Transactions []hexutil.Bytes `json:"transactions" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BlobGasUsed *hexutil.Uint64 `json:"blobGasUsed"`
ExcessBlobGas *hexutil.Uint64 `json:"excessBlobGas"`
ExecutionWitness *types.ExecutionWitness `json:"executionWitness,omitempty"`
}
var enc ExecutableData
enc.ParentHash = e.ParentHash
@ -58,29 +59,31 @@ func (e ExecutableData) MarshalJSON() ([]byte, error) {
enc.Withdrawals = e.Withdrawals
enc.BlobGasUsed = (*hexutil.Uint64)(e.BlobGasUsed)
enc.ExcessBlobGas = (*hexutil.Uint64)(e.ExcessBlobGas)
enc.ExecutionWitness = e.ExecutionWitness
return json.Marshal(&enc)
}
// UnmarshalJSON unmarshals from JSON.
func (e *ExecutableData) UnmarshalJSON(input []byte) error {
type ExecutableData struct {
ParentHash *common.Hash `json:"parentHash" gencodec:"required"`
FeeRecipient *common.Address `json:"feeRecipient" gencodec:"required"`
StateRoot *common.Hash `json:"stateRoot" gencodec:"required"`
ReceiptsRoot *common.Hash `json:"receiptsRoot" gencodec:"required"`
LogsBloom *hexutil.Bytes `json:"logsBloom" gencodec:"required"`
Random *common.Hash `json:"prevRandao" gencodec:"required"`
Number *hexutil.Uint64 `json:"blockNumber" gencodec:"required"`
GasLimit *hexutil.Uint64 `json:"gasLimit" gencodec:"required"`
GasUsed *hexutil.Uint64 `json:"gasUsed" gencodec:"required"`
Timestamp *hexutil.Uint64 `json:"timestamp" gencodec:"required"`
ExtraData *hexutil.Bytes `json:"extraData" gencodec:"required"`
BaseFeePerGas *hexutil.Big `json:"baseFeePerGas" gencodec:"required"`
BlockHash *common.Hash `json:"blockHash" gencodec:"required"`
Transactions []hexutil.Bytes `json:"transactions" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BlobGasUsed *hexutil.Uint64 `json:"blobGasUsed"`
ExcessBlobGas *hexutil.Uint64 `json:"excessBlobGas"`
ParentHash *common.Hash `json:"parentHash" gencodec:"required"`
FeeRecipient *common.Address `json:"feeRecipient" gencodec:"required"`
StateRoot *common.Hash `json:"stateRoot" gencodec:"required"`
ReceiptsRoot *common.Hash `json:"receiptsRoot" gencodec:"required"`
LogsBloom *hexutil.Bytes `json:"logsBloom" gencodec:"required"`
Random *common.Hash `json:"prevRandao" gencodec:"required"`
Number *hexutil.Uint64 `json:"blockNumber" gencodec:"required"`
GasLimit *hexutil.Uint64 `json:"gasLimit" gencodec:"required"`
GasUsed *hexutil.Uint64 `json:"gasUsed" gencodec:"required"`
Timestamp *hexutil.Uint64 `json:"timestamp" gencodec:"required"`
ExtraData *hexutil.Bytes `json:"extraData" gencodec:"required"`
BaseFeePerGas *hexutil.Big `json:"baseFeePerGas" gencodec:"required"`
BlockHash *common.Hash `json:"blockHash" gencodec:"required"`
Transactions []hexutil.Bytes `json:"transactions" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BlobGasUsed *hexutil.Uint64 `json:"blobGasUsed"`
ExcessBlobGas *hexutil.Uint64 `json:"excessBlobGas"`
ExecutionWitness *types.ExecutionWitness `json:"executionWitness,omitempty"`
}
var dec ExecutableData
if err := json.Unmarshal(input, &dec); err != nil {
@ -154,5 +157,8 @@ func (e *ExecutableData) UnmarshalJSON(input []byte) error {
if dec.ExcessBlobGas != nil {
e.ExcessBlobGas = (*uint64)(dec.ExcessBlobGas)
}
if dec.ExecutionWitness != nil {
e.ExecutionWitness = dec.ExecutionWitness
}
return nil
}

74
beacon/engine/types.go
View File

@ -59,23 +59,24 @@ type payloadAttributesMarshaling struct {
// ExecutableData is the data necessary to execute an EL payload.
type ExecutableData struct {
ParentHash common.Hash `json:"parentHash" gencodec:"required"`
FeeRecipient common.Address `json:"feeRecipient" gencodec:"required"`
StateRoot common.Hash `json:"stateRoot" gencodec:"required"`
ReceiptsRoot common.Hash `json:"receiptsRoot" gencodec:"required"`
LogsBloom []byte `json:"logsBloom" gencodec:"required"`
Random common.Hash `json:"prevRandao" gencodec:"required"`
Number uint64 `json:"blockNumber" gencodec:"required"`
GasLimit uint64 `json:"gasLimit" gencodec:"required"`
GasUsed uint64 `json:"gasUsed" gencodec:"required"`
Timestamp uint64 `json:"timestamp" gencodec:"required"`
ExtraData []byte `json:"extraData" gencodec:"required"`
BaseFeePerGas *big.Int `json:"baseFeePerGas" gencodec:"required"`
BlockHash common.Hash `json:"blockHash" gencodec:"required"`
Transactions [][]byte `json:"transactions" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BlobGasUsed *uint64 `json:"blobGasUsed"`
ExcessBlobGas *uint64 `json:"excessBlobGas"`
ParentHash common.Hash `json:"parentHash" gencodec:"required"`
FeeRecipient common.Address `json:"feeRecipient" gencodec:"required"`
StateRoot common.Hash `json:"stateRoot" gencodec:"required"`
ReceiptsRoot common.Hash `json:"receiptsRoot" gencodec:"required"`
LogsBloom []byte `json:"logsBloom" gencodec:"required"`
Random common.Hash `json:"prevRandao" gencodec:"required"`
Number uint64 `json:"blockNumber" gencodec:"required"`
GasLimit uint64 `json:"gasLimit" gencodec:"required"`
GasUsed uint64 `json:"gasUsed" gencodec:"required"`
Timestamp uint64 `json:"timestamp" gencodec:"required"`
ExtraData []byte `json:"extraData" gencodec:"required"`
BaseFeePerGas *big.Int `json:"baseFeePerGas" gencodec:"required"`
BlockHash common.Hash `json:"blockHash" gencodec:"required"`
Transactions [][]byte `json:"transactions" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BlobGasUsed *uint64 `json:"blobGasUsed"`
ExcessBlobGas *uint64 `json:"excessBlobGas"`
ExecutionWitness *types.ExecutionWitness `json:"executionWitness,omitempty"`
}
// JSON type overrides for executableData.
@ -251,7 +252,9 @@ func ExecutableDataToBlock(data ExecutableData, versionedHashes []common.Hash, b
BlobGasUsed: data.BlobGasUsed,
ParentBeaconRoot: beaconRoot,
}
block := types.NewBlockWithHeader(header).WithBody(types.Body{Transactions: txs, Uncles: nil, Withdrawals: data.Withdrawals})
block := types.NewBlockWithHeader(header)
block = block.WithBody(types.Body{Transactions: txs, Uncles: nil, Withdrawals: data.Withdrawals})
block = block.WithWitness(data.ExecutionWitness)
if block.Hash() != data.BlockHash {
return nil, fmt.Errorf("blockhash mismatch, want %x, got %x", data.BlockHash, block.Hash())
}
@ -262,23 +265,24 @@ func ExecutableDataToBlock(data ExecutableData, versionedHashes []common.Hash, b
// fields from the given block. It assumes the given block is post-merge block.
func BlockToExecutableData(block *types.Block, fees *big.Int, sidecars []*types.BlobTxSidecar) *ExecutionPayloadEnvelope {
data := &ExecutableData{
BlockHash: block.Hash(),
ParentHash: block.ParentHash(),
FeeRecipient: block.Coinbase(),
StateRoot: block.Root(),
Number: block.NumberU64(),
GasLimit: block.GasLimit(),
GasUsed: block.GasUsed(),
BaseFeePerGas: block.BaseFee(),
Timestamp: block.Time(),
ReceiptsRoot: block.ReceiptHash(),
LogsBloom: block.Bloom().Bytes(),
Transactions: encodeTransactions(block.Transactions()),
Random: block.MixDigest(),
ExtraData: block.Extra(),
Withdrawals: block.Withdrawals(),
BlobGasUsed: block.BlobGasUsed(),
ExcessBlobGas: block.ExcessBlobGas(),
BlockHash: block.Hash(),
ParentHash: block.ParentHash(),
FeeRecipient: block.Coinbase(),
StateRoot: block.Root(),
Number: block.NumberU64(),
GasLimit: block.GasLimit(),
GasUsed: block.GasUsed(),
BaseFeePerGas: block.BaseFee(),
Timestamp: block.Time(),
ReceiptsRoot: block.ReceiptHash(),
LogsBloom: block.Bloom().Bytes(),
Transactions: encodeTransactions(block.Transactions()),
Random: block.MixDigest(),
ExtraData: block.Extra(),
Withdrawals: block.Withdrawals(),
BlobGasUsed: block.BlobGasUsed(),
ExcessBlobGas: block.ExcessBlobGas(),
ExecutionWitness: block.ExecutionWitness(),
}
bundle := BlobsBundleV1{
Commitments: make([]hexutil.Bytes, 0),

35
consensus/beacon/consensus.go
View File

@ -387,8 +387,39 @@ func (beacon *Beacon) FinalizeAndAssemble(chain consensus.ChainHeaderReader, hea
// Assign the final state root to header.
header.Root = state.IntermediateRoot(true)
// Assemble and return the final block.
return types.NewBlock(header, body, receipts, trie.NewStackTrie(nil)), nil
// Assemble the final block.
block := types.NewBlock(header, body, receipts, trie.NewStackTrie(nil))
// Create the block witness and attach to block.
// This step needs to happen as late as possible to catch all access events.
if chain.Config().IsVerkle(header.Number, header.Time) {
keys := state.AccessEvents().Keys()
// Open the pre-tree to prove the pre-state against
parent := chain.GetHeaderByNumber(header.Number.Uint64() - 1)
if parent == nil {
return nil, fmt.Errorf("nil parent header for block %d", header.Number)
}
preTrie, err := state.Database().OpenTrie(parent.Root)
if err != nil {
return nil, fmt.Errorf("error opening pre-state tree root: %w", err)
}
vktPreTrie, okpre := preTrie.(*trie.VerkleTrie)
vktPostTrie, okpost := state.GetTrie().(*trie.VerkleTrie)
if okpre && okpost {
if len(keys) > 0 {
verkleProof, stateDiff, err := vktPreTrie.Proof(vktPostTrie, keys, vktPreTrie.FlatdbNodeResolver)
if err != nil {
return nil, fmt.Errorf("error generating verkle proof for block %d: %w", header.Number, err)
}
block = block.WithWitness(&types.ExecutionWitness{StateDiff: stateDiff, VerkleProof: verkleProof})
}
}
}
return block, nil
}
// Seal generates a new sealing request for the given input block and pushes

5
core/chain_makers.go
View File

@ -467,9 +467,8 @@ func GenerateVerkleChain(config *params.ChainConfig, parent *types.Block, engine
panic(fmt.Sprintf("trie write error: %v", err))
}
// TODO uncomment when proof generation is merged
// proofs = append(proofs, block.ExecutionWitness().VerkleProof)
// keyvals = append(keyvals, block.ExecutionWitness().StateDiff)
proofs = append(proofs, block.ExecutionWitness().VerkleProof)
keyvals = append(keyvals, block.ExecutionWitness().StateDiff)
return block, b.receipts
}

13
core/state/statedb.go
View File

@ -130,7 +130,8 @@ type StateDB struct {
preimages map[common.Hash][]byte
// Per-transaction access list
accessList *accessList
accessList *accessList
accessEvents *AccessEvents
// Transient storage
transientStorage transientStorage
@ -184,6 +185,9 @@ func New(root common.Hash, db Database, snaps *snapshot.Tree) (*StateDB, error)
transientStorage: newTransientStorage(),
hasher: crypto.NewKeccakState(),
}
if db.TrieDB().IsVerkle() {
sdb.accessEvents = NewAccessEvents(db.(*cachingDB).pointCache)
}
if sdb.snaps != nil {
sdb.snap = sdb.snaps.Snapshot(root)
}
@ -709,6 +713,9 @@ func (s *StateDB) Copy() *StateDB {
if s.witness != nil {
state.witness = s.witness.Copy()
}
if s.accessEvents != nil {
state.accessEvents = s.accessEvents.Copy()
}
// Deep copy cached state objects.
for addr, obj := range s.stateObjects {
state.stateObjects[addr] = obj.deepCopy(state)
@ -1452,3 +1459,7 @@ func (s *StateDB) PointCache() *utils.PointCache {
func (s *StateDB) Witness() *stateless.Witness {
return s.witness
}
func (s *StateDB) AccessEvents() *AccessEvents {
return s.accessEvents
}

6
core/state_processor.go
View File

@ -153,6 +153,12 @@ func ApplyTransactionWithEVM(msg *Message, config *params.ChainConfig, gp *GasPo
receipt.ContractAddress = crypto.CreateAddress(evm.TxContext.Origin, tx.Nonce())
}
// Merge the tx-local access event into the "block-local" one, in order to collect
// all values, so that the witness can be built.
if statedb.GetTrie().IsVerkle() {
statedb.AccessEvents().Merge(evm.AccessEvents)
}
// Set the receipt logs and create the bloom filter.
receipt.Logs = statedb.GetLogs(tx.Hash(), blockNumber.Uint64(), blockHash)
receipt.Bloom = types.CreateBloom(types.Receipts{receipt})

15
core/state_processor_test.go
View File

@ -38,6 +38,7 @@ import (
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/trie"
"github.com/ethereum/go-ethereum/triedb"
"github.com/ethereum/go-verkle"
"github.com/holiman/uint256"
"golang.org/x/crypto/sha3"
)
@ -491,7 +492,7 @@ func TestProcessVerkle(t *testing.T) {
txCost1*2 + txCost2,
txCost1*2 + txCost2 + contractCreationCost + codeWithExtCodeCopyGas,
}
_, chain, _, _, _ := GenerateVerkleChainWithGenesis(gspec, beacon.New(ethash.NewFaker()), 2, func(i int, gen *BlockGen) {
_, chain, _, proofs, statediffs := GenerateVerkleChainWithGenesis(gspec, beacon.New(ethash.NewFaker()), 2, func(i int, gen *BlockGen) {
gen.SetPoS()
// TODO need to check that the tx cost provided is the exact amount used (no remaining left-over)
@ -512,7 +513,17 @@ func TestProcessVerkle(t *testing.T) {
}
})
t.Log("inserting blocks into the chain")
// Check proof for both blocks
err := verkle.Verify(proofs[0], gspec.ToBlock().Root().Bytes(), chain[0].Root().Bytes(), statediffs[0])
if err != nil {
t.Fatal(err)
}
err = verkle.Verify(proofs[1], chain[0].Root().Bytes(), chain[1].Root().Bytes(), statediffs[1])
if err != nil {
t.Fatal(err)
}
t.Log("verified verkle proof, inserting blocks into the chain")
endnum, err := blockchain.InsertChain(chain)
if err != nil {

28
core/types/block.go
View File

@ -30,6 +30,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-verkle"
)
// A BlockNonce is a 64-bit hash which proves (combined with the
@ -59,6 +60,13 @@ func (n *BlockNonce) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("BlockNonce", input, n[:])
}
// ExecutionWitness represents the witness + proof used in a verkle context,
// to provide the ability to execute a block statelessly.
type ExecutionWitness struct {
StateDiff verkle.StateDiff `json:"stateDiff"`
VerkleProof *verkle.VerkleProof `json:"verkleProof"`
}
//go:generate go run github.com/fjl/gencodec -type Header -field-override headerMarshaling -out gen_header_json.go
//go:generate go run ../../rlp/rlpgen -type Header -out gen_header_rlp.go
@ -197,6 +205,11 @@ type Block struct {
transactions Transactions
withdrawals Withdrawals
// witness is not an encoded part of the block body.
// It is held in Block in order for easy relaying to the places
// that process it.
witness *ExecutionWitness
// caches
hash atomic.Pointer[common.Hash]
size atomic.Uint64
@ -401,6 +414,9 @@ func (b *Block) BlobGasUsed() *uint64 {
return blobGasUsed
}
// ExecutionWitness returns the verkle execution witneess + proof for a block
func (b *Block) ExecutionWitness() *ExecutionWitness { return b.witness }
// Size returns the true RLP encoded storage size of the block, either by encoding
// and returning it, or returning a previously cached value.
func (b *Block) Size() uint64 {
@ -448,6 +464,7 @@ func (b *Block) WithSeal(header *Header) *Block {
transactions: b.transactions,
uncles: b.uncles,
withdrawals: b.withdrawals,
witness: b.witness,
}
}
@ -459,6 +476,7 @@ func (b *Block) WithBody(body Body) *Block {
transactions: slices.Clone(body.Transactions),
uncles: make([]*Header, len(body.Uncles)),
withdrawals: slices.Clone(body.Withdrawals),
witness: b.witness,
}
for i := range body.Uncles {
block.uncles[i] = CopyHeader(body.Uncles[i])
@ -466,6 +484,16 @@ func (b *Block) WithBody(body Body) *Block {
return block
}
func (b *Block) WithWitness(witness *ExecutionWitness) *Block {
return &Block{
header: b.header,
transactions: b.transactions,
uncles: b.uncles,
withdrawals: b.withdrawals,
witness: witness,
}
}
// Hash returns the keccak256 hash of b's header.
// The hash is computed on the first call and cached thereafter.
func (b *Block) Hash() common.Hash {

2
go.mod
View File

@ -24,7 +24,7 @@ require (
github.com/donovanhide/eventsource v0.0.0-20210830082556-c59027999da0
github.com/dop251/goja v0.0.0-20230605162241-28ee0ee714f3
github.com/ethereum/c-kzg-4844 v1.0.0
github.com/ethereum/go-verkle v0.1.1-0.20240726143912-7dc5142667fa
github.com/ethereum/go-verkle v0.1.1-0.20240829091221-dffa7562dbe9
github.com/fatih/color v1.16.0
github.com/ferranbt/fastssz v0.1.2
github.com/fjl/gencodec v0.0.0-20230517082657-f9840df7b83e

4
go.sum
View File

@ -170,8 +170,8 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/ethereum/c-kzg-4844 v1.0.0 h1:0X1LBXxaEtYD9xsyj9B9ctQEZIpnvVDeoBx8aHEwTNA=
github.com/ethereum/c-kzg-4844 v1.0.0/go.mod h1:VewdlzQmpT5QSrVhbBuGoCdFJkpaJlO1aQputP83wc0=
github.com/ethereum/go-verkle v0.1.1-0.20240726143912-7dc5142667fa h1:mXkPoR07WlPVAClNzWuGAQNqmhxLqQILXhm73J5d9Ew=
github.com/ethereum/go-verkle v0.1.1-0.20240726143912-7dc5142667fa/go.mod h1:D9AJLVXSyZQXJQVk8oh1EwjISE+sJTn2duYIZC0dy3w=
github.com/ethereum/go-verkle v0.1.1-0.20240829091221-dffa7562dbe9 h1:8NfxH2iXvJ60YRB8ChToFTUzl8awsc3cJ8CbLjGIl/A=
github.com/ethereum/go-verkle v0.1.1-0.20240829091221-dffa7562dbe9/go.mod h1:M3b90YRnzqKyyzBEWJGqj8Qff4IDeXnzFw0P9bFw3uk=
github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
github.com/fatih/color v1.16.0/go.mod h1:fL2Sau1YI5c0pdGEVCbKQbLXB6edEj1ZgiY4NijnWvE=
github.com/ferranbt/fastssz v0.1.2 h1:Dky6dXlngF6Qjc+EfDipAkE83N5I5DE68bY6O0VLNPk=

25
trie/verkle.go
View File

@ -69,6 +69,10 @@ func NewVerkleTrie(root common.Hash, db database.Database, cache *utils.PointCac
}, nil
}
func (t *VerkleTrie) FlatdbNodeResolver(path []byte) ([]byte, error) {
return t.reader.node(path, common.Hash{})
}
// GetKey returns the sha3 preimage of a hashed key that was previously used
// to store a value.
func (t *VerkleTrie) GetKey(key []byte) []byte {
@ -303,6 +307,27 @@ func (t *VerkleTrie) IsVerkle() bool {
return true
}
// Proof builds and returns the verkle multiproof for keys, built against
// the pre tree. The post tree is passed in order to add the post values
// to that proof.
func (t *VerkleTrie) Proof(posttrie *VerkleTrie, keys [][]byte, resolver verkle.NodeResolverFn) (*verkle.VerkleProof, verkle.StateDiff, error) {
var postroot verkle.VerkleNode
if posttrie != nil {
postroot = posttrie.root
}
proof, _, _, _, err := verkle.MakeVerkleMultiProof(t.root, postroot, keys, resolver)
if err != nil {
return nil, nil, err
}
p, kvps, err := verkle.SerializeProof(proof)
if err != nil {
return nil, nil, err
}
return p, kvps, nil
}
// ChunkedCode represents a sequence of 32-bytes chunks of code (31 bytes of which
// are actual code, and 1 byte is the pushdata offset).
type ChunkedCode []byte