Save Attestation and AttestationHashes to DB (#472)

2026-01-09 15:37:56 -05:00 · 2018-09-08 18:52:18 -07:00
parent d4209b7357
commit b0f5ef0da0
10 changed files with 680 additions and 108 deletions
--- a/beacon-chain/blockchain/core.go
+++ b/beacon-chain/blockchain/core.go
@@ -482,6 +482,7 @@ func (b *BeaconChain) stateRecalc(
 		recentBlockHashes = append(recentBlockHashes, blockHashes[:])
 		// Drop the oldest block hash if the recent block hashes length is more than 2 * cycle length.
 		for len(recentBlockHashes) > 2*params.CycleLength {
+			// Delete attestation hash list that's corresponding to the block hash.
 			recentBlockHashes = recentBlockHashes[1:]
 		}
 	}
@@ -640,3 +641,123 @@ func (b *BeaconChain) getCanonicalBlockForSlot(slotNumber uint64) (*types.Block,

 	return block, err
 }
+
+func (b *BeaconChain) hasAttestation(attestationHash [32]byte) (bool, error) {
+	return b.db.Has(attestationKey(attestationHash))
+}
+
+// saveAttestation puts the attestation record into the beacon chain db.
+func (b *BeaconChain) saveAttestation(attestation *types.Attestation) error {
+	hash := attestation.Key()
+	key := attestationKey(hash)
+	encodedState, err := attestation.Marshal()
+	if err != nil {
+		return err
+	}
+	return b.db.Put(key, encodedState)
+}
+
+// getAttestation retrieves an attestation record from the db using its hash.
+func (b *BeaconChain) getAttestation(hash [32]byte) (*types.Attestation, error) {
+	key := attestationKey(hash)
+	enc, err := b.db.Get(key)
+	if err != nil {
+		return nil, err
+	}
+
+	attestation := &pb.AttestationRecord{}
+
+	err = proto.Unmarshal(enc, attestation)
+
+	return types.NewAttestation(attestation), err
+}
+
+// removeAttestation removes the attestation from the db.
+func (b *BeaconChain) removeAttestation(blockHash [32]byte) error {
+	return b.db.Delete(attestationKey(blockHash))
+}
+
+// hasAttestationHash checks if the beacon block has the attestation.
+func (b *BeaconChain) hasAttestationHash(blockHash [32]byte, attestationHash [32]byte) (bool, error) {
+	enc, err := b.db.Get(attestationHashListKey(blockHash))
+	if err != nil {
+		return false, err
+	}
+
+	attestationHashes := &pb.AttestationHashes{}
+	if err := proto.Unmarshal(enc, attestationHashes); err != nil {
+		return false, err
+	}
+
+	for _, hash := range attestationHashes.AttestationHash {
+		if bytes.Equal(hash, attestationHash[:]) {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+// hasAttestationHashList checks if the attestation hash list is available.
+func (b *BeaconChain) hasAttestationHashList(blockHash [32]byte) (bool, error) {
+	key := attestationHashListKey(blockHash)
+
+	hasKey, err := b.db.Has(key)
+	if err != nil {
+		return false, err
+	}
+	if !hasKey {
+		return false, nil
+	}
+	return true, nil
+}
+
+// getAttestationHashList gets the attestation hash list of the beacon block from the db.
+func (b *BeaconChain) getAttestationHashList(blockHash [32]byte) ([][]byte, error) {
+	key := attestationHashListKey(blockHash)
+
+	hasList, err := b.hasAttestationHashList(blockHash)
+	if err != nil {
+		return [][]byte{}, err
+	}
+	if !hasList {
+		if err := b.db.Put(key, []byte{}); err != nil {
+			return [][]byte{}, err
+		}
+	}
+	enc, err := b.db.Get(key)
+	if err != nil {
+		return [][]byte{}, err
+	}
+
+	attestationHashes := &pb.AttestationHashes{}
+	if err := proto.Unmarshal(enc, attestationHashes); err != nil {
+		return [][]byte{}, err
+	}
+	return attestationHashes.AttestationHash, nil
+}
+
+// removeAttestationHashList removes the attestation hash list of the beacon block from the db.
+func (b *BeaconChain) removeAttestationHashList(blockHash [32]byte) error {
+	return b.db.Delete(attestationHashListKey(blockHash))
+}
+
+// saveAttestationHash saves the attestation hash into the attestation hash list of the corresponding beacon block.
+func (b *BeaconChain) saveAttestationHash(blockHash [32]byte, attestationHash [32]byte) error {
+	key := attestationHashListKey(blockHash)
+
+	hashes, err := b.getAttestationHashList(blockHash)
+	if err != nil {
+		return err
+	}
+	hashes = append(hashes, attestationHash[:])
+
+	attestationHashes := &pb.AttestationHashes{}
+	attestationHashes.AttestationHash = hashes
+
+	encodedState, err := proto.Marshal(attestationHashes)
+	if err != nil {
+		return err
+	}
+
+	return b.db.Put(key, encodedState)
+}
--- a/beacon-chain/blockchain/core_test.go
+++ b/beacon-chain/blockchain/core_test.go
@@ -689,6 +689,14 @@ func NewBlock(t *testing.T, b *pb.BeaconBlock) *types.Block {
 	return types.NewBlock(b)
 }

+// NewAttestation is a helper method to create attestation with valid defaults.
+func NewAttestation(t *testing.T, b *pb.AttestationRecord) *types.Attestation {
+	if b == nil {
+		b = &pb.AttestationRecord{}
+	}
+	return types.NewAttestation(b)
+}
+
 func TestSaveAndRemoveBlocks(t *testing.T) {
 	b, db := startInMemoryBeaconChain(t)
 	defer db.Close()
@@ -854,6 +862,120 @@ func TestGetBlockBySlotNumber(t *testing.T) {
 	}
 }

+func TestSaveAndRemoveAttestations(t *testing.T) {
+	b, db := startInMemoryBeaconChain(t)
+	defer db.Close()
+
+	attestation := NewAttestation(t, &pb.AttestationRecord{
+		Slot:             1,
+		ShardId:          1,
+		AttesterBitfield: []byte{'A'},
+	})
+
+	hash := attestation.Key()
+	if err := b.saveAttestation(attestation); err != nil {
+		t.Fatalf("unable to save attestation %v", err)
+	}
+
+	exist, err := b.hasAttestation(hash)
+	if err != nil {
+		t.Fatalf("unable to check attestation %v", err)
+	}
+	if !exist {
+		t.Fatal("saved attestation does not exist")
+	}
+
+	// Adding a different attestation with the same key
+	newAttestation := NewAttestation(t, &pb.AttestationRecord{
+		Slot:             2,
+		ShardId:          2,
+		AttesterBitfield: []byte{'B'},
+	})
+
+	key := blockKey(hash)
+	marshalled, err := proto.Marshal(newAttestation.Proto())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := b.db.Put(key, marshalled); err != nil {
+		t.Fatal(err)
+	}
+
+	returnedAttestation, err := b.getAttestation(hash)
+	if err != nil {
+		t.Fatalf("attestation is unable to be retrieved")
+	}
+
+	if returnedAttestation.SlotNumber() != newAttestation.SlotNumber() {
+		t.Errorf("slotnumber does not match for saved and retrieved attestation")
+	}
+
+	if !bytes.Equal(returnedAttestation.AttesterBitfield(), newAttestation.AttesterBitfield()) {
+		t.Errorf("attester bitfield does not match for saved and retrieved attester")
+	}
+
+	if err := b.removeAttestation(hash); err != nil {
+		t.Fatalf("error removing attestation %v", err)
+	}
+
+	if _, err := b.getAttestation(hash); err == nil {
+		t.Fatalf("attestation is able to be retrieved")
+	}
+}
+
+func TestSaveAndRemoveAttestationHashList(t *testing.T) {
+	b, db := startInMemoryBeaconChain(t)
+	defer db.Close()
+
+	block := NewBlock(t, &pb.BeaconBlock{
+		SlotNumber: 0,
+	})
+	blockHash, err := block.Hash()
+	if err != nil {
+		t.Error(err)
+	}
+
+	attestation := NewAttestation(t, &pb.AttestationRecord{
+		Slot:             1,
+		ShardId:          1,
+		AttesterBitfield: []byte{'A'},
+	})
+	attestationHash := attestation.Key()
+
+	if err := b.saveAttestationHash(blockHash, attestationHash); err != nil {
+		t.Fatalf("unable to save attestation hash %v", err)
+	}
+
+	exist, err := b.hasAttestationHash(blockHash, attestationHash)
+	if err != nil {
+		t.Fatalf("unable to check for attestation hash %v", err)
+	}
+	if !exist {
+		t.Error("saved attestation hash does not exist")
+	}
+
+	// Negative test case: try with random attestation, exist should be false.
+	exist, err = b.hasAttestationHash(blockHash, [32]byte{'A'})
+	if err != nil {
+		t.Fatalf("unable to check for attestation hash %v", err)
+	}
+	if exist {
+		t.Error("attestation hash shouldn't have existed")
+	}
+
+	// Remove attestation list by deleting the block hash key.
+	if err := b.removeAttestationHashList(blockHash); err != nil {
+		t.Fatalf("remove attestation hash list failed %v", err)
+	}
+
+	// Negative test case: try with deleted block hash, this should fail.
+	_, err = b.hasAttestationHash(blockHash, attestationHash)
+	if err == nil {
+		t.Error("attestation hash should't have existed in DB")
+	}
+}
+
 func TestProcessCrosslinks(t *testing.T) {
 	beaconChain, db := startInMemoryBeaconChain(t)
 	defer db.Close()
--- a/beacon-chain/blockchain/schema.go
+++ b/beacon-chain/blockchain/schema.go
@@ -28,9 +28,10 @@ var (
 	genesisLookupKey = []byte("genesis")

 	// Data item prefixes.
-	blockPrefix = []byte("block-") // blockPrefix + blockhash -> block
-
-	canonicalPrefix = []byte("canonical-") // canonicalPrefix + num(uint64 big endian) -> blockhash
+	blockPrefix             = []byte("block-")             // blockPrefix + blockhash -> block
+	canonicalPrefix         = []byte("canonical-")         // canonicalPrefix + num(uint64 big endian) -> blockhash
+	attestationPrefix       = []byte("attestation-")       // attestationPrefix + attestationHash -> attestation
+	attestationHashesPrefix = []byte("attestationHashes-") // attestationHashesPrefix + blockHash -> attestationHashes
 )

 // encodeSlotNumber encodes a slot number as big endian uint64.
@@ -40,7 +41,7 @@ func encodeSlotNumber(number uint64) []byte {
 	return enc
 }

-// blockKey = blockPrefix + hash.
+// blockKey = blockPrefix + blockHash.
 func blockKey(hash [32]byte) []byte {
 	return append(blockPrefix, hash[:]...)
 }
@@ -49,3 +50,13 @@ func blockKey(hash [32]byte) []byte {
 func canonicalBlockKey(slotnumber uint64) []byte {
 	return append(canonicalPrefix, encodeSlotNumber(slotnumber)...)
 }
+
+// attestationKey = attestationPrefix + attestationHash.
+func attestationKey(hash [32]byte) []byte {
+	return append(attestationPrefix, hash[:]...)
+}
+
+// attestationHashListKey = attestationHashesPrefix + blockHash.
+func attestationHashListKey(hash [32]byte) []byte {
+	return append(attestationHashesPrefix, hash[:]...)
+}
--- a/beacon-chain/blockchain/service.go
+++ b/beacon-chain/blockchain/service.go
@@ -284,6 +284,18 @@ func (c *ChainService) blockProcessing(done <-chan struct{}) {
 					log.Errorf("could not process attestation for block %d because %v", block.SlotNumber(), err)
 				} else {
 					canProcessAttestations = true
+					// Save processed attestation to local db.
+					if err := c.chain.saveAttestation(types.NewAttestation(attestation)); err != nil {
+						log.Errorf("Can not save attestation: %v", err)
+					}
+					attestationHash, err := types.NewAttestation(attestation).Hash()
+					if err != nil {
+						log.Errorf("Can not hash attestation: %v", err)
+					}
+					if err := c.chain.saveAttestationHash(h, attestationHash); err != nil {
+						log.Errorf("Can not save attesstation hash: %v", err)
+					}
+
 					processedAttestations = append(processedAttestations, attestation)
 				}
 			}
@@ -334,6 +346,7 @@ func (c *ChainService) blockProcessing(done <-chan struct{}) {
 			activeState := c.chain.ActiveState()
 			crystallizedState := c.chain.CrystallizedState()
 			if isTransition {
+				log.Info("Entering cycle transition")
 				crystallizedState, activeState, err = c.chain.stateRecalc(crystallizedState, activeState, block)
 				if err != nil {
 					log.Errorf("Initialize new cycle transition failed: %v", err)
--- a/beacon-chain/blockchain/service_test.go
+++ b/beacon-chain/blockchain/service_test.go
@@ -618,3 +618,83 @@ func TestProcessAttestationBadBlock(t *testing.T) {

 	testutil.AssertLogsContain(t, hook, "could not process attestation for block")
 }
+
+func TestEnterCycleTransition(t *testing.T) {
+	hook := logTest.NewGlobal()
+	ctx := context.Background()
+	config := &database.DBConfig{DataDir: "", Name: "", InMemory: true}
+	db, err := database.NewDB(config)
+	if err != nil {
+		t.Fatalf("could not setup beaconDB: %v", err)
+	}
+
+	endpoint := "ws://127.0.0.1"
+	client := &mockClient{}
+	web3Service, err := powchain.NewWeb3Service(ctx, &powchain.Web3ServiceConfig{Endpoint: endpoint, Pubkey: "", VrcAddr: common.Address{}}, client, client, client)
+	if err != nil {
+		t.Fatalf("unable to set up web3 service: %v", err)
+	}
+	beaconChain, err := NewBeaconChain(db.DB())
+	if err != nil {
+		t.Fatalf("could not register blockchain service: %v", err)
+	}
+
+	cfg := &Config{
+		BeaconBlockBuf: 0,
+		BeaconDB:       db.DB(),
+		Chain:          beaconChain,
+		Web3Service:    web3Service,
+	}
+
+	chainService, _ := NewChainService(ctx, cfg)
+
+	active, crystallized, err := types.NewGenesisStates()
+	if err != nil {
+		t.Fatalf("Can't generate genesis state: %v", err)
+	}
+
+	activeStateHash, _ := active.Hash()
+	crystallizedStateHash, _ := crystallized.Hash()
+
+	genesis, err := beaconChain.GenesisBlock()
+	if err != nil {
+		t.Fatalf("unable to get canonical head: %v", err)
+	}
+	if err := chainService.SaveBlock(genesis); err != nil {
+		t.Fatalf("save block should failed")
+	}
+
+	parentHash, err := genesis.Hash()
+	if err != nil {
+		t.Fatalf("unable to get hash of canonical head: %v", err)
+	}
+
+	block1 := NewBlock(t, &pb.BeaconBlock{
+		ParentHash:            parentHash[:],
+		SlotNumber:            64,
+		ActiveStateHash:       activeStateHash[:],
+		CrystallizedStateHash: crystallizedStateHash[:],
+		Attestations: []*pb.AttestationRecord{{
+			Slot:             0,
+			AttesterBitfield: []byte{0, 0},
+			ShardId:          0,
+		}},
+	})
+
+	exitRoutine := make(chan bool)
+	go func() {
+		chainService.blockProcessing(chainService.ctx.Done())
+		<-exitRoutine
+	}()
+
+	if err := chainService.SaveBlock(block1); err != nil {
+		t.Fatal(err)
+	}
+
+	chainService.incomingBlockChan <- block1
+
+	chainService.cancel()
+	exitRoutine <- true
+
+	testutil.AssertLogsContain(t, hook, "Entering cycle transition")
+}
--- a/beacon-chain/types/BUILD.bazel
+++ b/beacon-chain/types/BUILD.bazel
@@ -3,6 +3,7 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 go_library(
    name = "go_default_library",
    srcs = [
+        "attestation.go",
        "block.go",
        "interfaces.go",
        "state.go",
@@ -28,6 +29,7 @@ go_library(
 go_test(
    name = "go_default_test",
    srcs = [
+        "attestation_test.go",
        "block_test.go",
        "state_test.go",
    ],
--- a/beacon-chain/types/attestation.go
+++ b/beacon-chain/types/attestation.go
@@ -0,0 +1,123 @@
+// Package types defines the essential types used throughout the beacon-chain.
+package types
+
+import (
+	"encoding/binary"
+	"fmt"
+
+	"github.com/golang/protobuf/proto"
+	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"golang.org/x/crypto/blake2b"
+)
+
+// Attestation is the primary source of load on the beacon chain, it's used to
+// attest to some parent block in the chain and block hash in a shard.
+type Attestation struct {
+	data *pb.AttestationRecord
+}
+
+// NewAttestation explicitly sets the data field of a attestation.
+// Return attestation with default fields if data is nil.
+func NewAttestation(data *pb.AttestationRecord) *Attestation {
+	if data == nil {
+		return &Attestation{
+			data: &pb.AttestationRecord{
+				Slot:                0,
+				ShardId:             0,
+				JustifiedSlot:       0,
+				JustifiedBlockHash:  []byte{},
+				ShardBlockHash:      []byte{},
+				AttesterBitfield:    []byte{},
+				ObliqueParentHashes: [][]byte{{}},
+				AggregateSig:        []uint64{},
+			},
+		}
+	}
+	return &Attestation{data: data}
+}
+
+// Proto returns the underlying protobuf data.
+func (a *Attestation) Proto() *pb.AttestationRecord {
+	return a.data
+}
+
+// Marshal encodes block object into the wire format.
+func (a *Attestation) Marshal() ([]byte, error) {
+	return proto.Marshal(a.data)
+}
+
+// Hash generates the blake2b hash of the attestation.
+func (a *Attestation) Hash() ([32]byte, error) {
+	data, err := proto.Marshal(a.data)
+	if err != nil {
+		return [32]byte{}, fmt.Errorf("could not marshal attestation proto data: %v", err)
+	}
+	var hash [32]byte
+	h := blake2b.Sum512(data)
+	copy(hash[:], h[:32])
+	return hash, nil
+}
+
+// Key generates the blake2b hash of the following attestation fields:
+// slotNumber + shardID + blockHash + obliqueParentHash
+// This is used for attestation table look up in localDB.
+func (a *Attestation) Key() [32]byte {
+	key := make([]byte, binary.MaxVarintLen64)
+	binary.PutUvarint(key, a.SlotNumber())
+	binary.PutUvarint(key, a.ShardID())
+	key = append(key, a.ShardBlockHash()...)
+	for _, pHash := range a.ObliqueParentHashes() {
+		key = append(key, pHash[:]...)
+	}
+
+	var hash [32]byte
+	h := blake2b.Sum512(key)
+	copy(hash[:], h[:32])
+	return hash
+}
+
+// SlotNumber of the block, which this attestation is attesting to.
+func (a *Attestation) SlotNumber() uint64 {
+	return a.data.Slot
+}
+
+// ShardID of the block, which this attestation is attesting to.
+func (a *Attestation) ShardID() uint64 {
+	return a.data.ShardId
+}
+
+// ShardBlockHash of the block, which this attestation is attesting to.
+func (a *Attestation) ShardBlockHash() []byte {
+	return a.data.ShardBlockHash
+}
+
+// JustifiedSlotNumber of the attestation should be earlier than the last justified slot in crystallized state.
+func (a *Attestation) JustifiedSlotNumber() uint64 {
+	return a.data.Slot
+}
+
+// JustifiedBlockHash should be in the chain of the block being processed.
+func (a *Attestation) JustifiedBlockHash() []byte {
+	return a.data.JustifiedBlockHash
+}
+
+// AttesterBitfield represents which validator in the committee has voted.
+func (a *Attestation) AttesterBitfield() []byte {
+	return a.data.AttesterBitfield
+}
+
+// ObliqueParentHashes represents the block hashes this attestation is not attesting for.
+func (a *Attestation) ObliqueParentHashes() [][32]byte {
+	var obliqueParentHashes [][32]byte
+	for _, hash := range a.data.ObliqueParentHashes {
+		var h [32]byte
+		copy(h[:], hash)
+		obliqueParentHashes = append(obliqueParentHashes, h)
+	}
+	return obliqueParentHashes
+}
+
+// AggregateSig represents the aggregated signature from all the validators attesting to this block.
+func (a *Attestation) AggregateSig() []uint64 {
+	return a.data.AggregateSig
+}
--- a/beacon-chain/types/attestation_test.go
+++ b/beacon-chain/types/attestation_test.go
@@ -0,0 +1,55 @@
+package types
+
+import (
+	"bytes"
+	"reflect"
+	"testing"
+
+	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+)
+
+func TestAttestation(t *testing.T) {
+	data := &pb.AttestationRecord{
+		Slot:                0,
+		ShardId:             0,
+		JustifiedSlot:       0,
+		JustifiedBlockHash:  []byte{0},
+		ShardBlockHash:      []byte{0},
+		AttesterBitfield:    []byte{0},
+		ObliqueParentHashes: [][]byte{{0}},
+		AggregateSig:        []uint64{0},
+	}
+	attestation := NewAttestation(data)
+	attestation.SlotNumber()
+	attestation.ShardID()
+	attestation.JustifiedSlotNumber()
+	attestation.JustifiedBlockHash()
+	attestation.AttesterBitfield()
+	attestation.ObliqueParentHashes()
+	attestation.AggregateSig()
+	attestation.Key()
+
+	emptyAttestation := &Attestation{}
+	if _, err := emptyAttestation.Marshal(); err == nil {
+		t.Error("marshal with empty data should fail")
+	}
+	if _, err := emptyAttestation.Hash(); err == nil {
+		t.Error("hash with empty data should fail")
+	}
+	if _, err := attestation.Hash(); err != nil {
+		t.Errorf("hashing with data should not fail, received %v", err)
+	}
+	if !reflect.DeepEqual(attestation.data, attestation.Proto()) {
+		t.Errorf("inner block data did not match proto: received %v, wanted %v", attestation.Proto(), attestation.data)
+	}
+	if attestation.SlotNumber() != 0 {
+		t.Errorf("mismatched attestation slot number: wanted 0, received %v", attestation.SlotNumber())
+	}
+	attestationWithNilData := NewAttestation(nil)
+	if attestationWithNilData.ShardID() != 0 {
+		t.Errorf("mismatched attestation shard id: wanted 0, received %v", attestation.ShardID())
+	}
+	if !bytes.Equal(attestation.ShardBlockHash(), []byte{0}) {
+		t.Errorf("mismatched shard block hash")
+	}
+}
--- a/proto/beacon/p2p/v1/messages.pb.go
+++ b/proto/beacon/p2p/v1/messages.pb.go
@@ -66,7 +66,7 @@ func (x Topic) String() string {
 	return proto.EnumName(Topic_name, int32(x))
 }
 func (Topic) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{0}
+	return fileDescriptor_messages_290630aaea57f115, []int{0}
 }

 type BeaconBlockHashAnnounce struct {
@@ -80,7 +80,7 @@ func (m *BeaconBlockHashAnnounce) Reset()         { *m = BeaconBlockHashAnnounce
 func (m *BeaconBlockHashAnnounce) String() string { return proto.CompactTextString(m) }
 func (*BeaconBlockHashAnnounce) ProtoMessage()    {}
 func (*BeaconBlockHashAnnounce) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{0}
+	return fileDescriptor_messages_290630aaea57f115, []int{0}
 }
 func (m *BeaconBlockHashAnnounce) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_BeaconBlockHashAnnounce.Unmarshal(m, b)
@@ -118,7 +118,7 @@ func (m *BeaconBlockRequest) Reset()         { *m = BeaconBlockRequest{} }
 func (m *BeaconBlockRequest) String() string { return proto.CompactTextString(m) }
 func (*BeaconBlockRequest) ProtoMessage()    {}
 func (*BeaconBlockRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{1}
+	return fileDescriptor_messages_290630aaea57f115, []int{1}
 }
 func (m *BeaconBlockRequest) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_BeaconBlockRequest.Unmarshal(m, b)
@@ -156,7 +156,7 @@ func (m *BeaconBlockRequestBySlotNumber) Reset()         { *m = BeaconBlockReque
 func (m *BeaconBlockRequestBySlotNumber) String() string { return proto.CompactTextString(m) }
 func (*BeaconBlockRequestBySlotNumber) ProtoMessage()    {}
 func (*BeaconBlockRequestBySlotNumber) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{2}
+	return fileDescriptor_messages_290630aaea57f115, []int{2}
 }
 func (m *BeaconBlockRequestBySlotNumber) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_BeaconBlockRequestBySlotNumber.Unmarshal(m, b)
@@ -194,7 +194,7 @@ func (m *BeaconBlockResponse) Reset()         { *m = BeaconBlockResponse{} }
 func (m *BeaconBlockResponse) String() string { return proto.CompactTextString(m) }
 func (*BeaconBlockResponse) ProtoMessage()    {}
 func (*BeaconBlockResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{3}
+	return fileDescriptor_messages_290630aaea57f115, []int{3}
 }
 func (m *BeaconBlockResponse) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_BeaconBlockResponse.Unmarshal(m, b)
@@ -239,7 +239,7 @@ func (m *BeaconBlock) Reset()         { *m = BeaconBlock{} }
 func (m *BeaconBlock) String() string { return proto.CompactTextString(m) }
 func (*BeaconBlock) ProtoMessage()    {}
 func (*BeaconBlock) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{4}
+	return fileDescriptor_messages_290630aaea57f115, []int{4}
 }
 func (m *BeaconBlock) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_BeaconBlock.Unmarshal(m, b)
@@ -326,7 +326,7 @@ func (m *CrystallizedStateHashAnnounce) Reset()         { *m = CrystallizedState
 func (m *CrystallizedStateHashAnnounce) String() string { return proto.CompactTextString(m) }
 func (*CrystallizedStateHashAnnounce) ProtoMessage()    {}
 func (*CrystallizedStateHashAnnounce) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{5}
+	return fileDescriptor_messages_290630aaea57f115, []int{5}
 }
 func (m *CrystallizedStateHashAnnounce) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_CrystallizedStateHashAnnounce.Unmarshal(m, b)
@@ -364,7 +364,7 @@ func (m *CrystallizedStateRequest) Reset()         { *m = CrystallizedStateReque
 func (m *CrystallizedStateRequest) String() string { return proto.CompactTextString(m) }
 func (*CrystallizedStateRequest) ProtoMessage()    {}
 func (*CrystallizedStateRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{6}
+	return fileDescriptor_messages_290630aaea57f115, []int{6}
 }
 func (m *CrystallizedStateRequest) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_CrystallizedStateRequest.Unmarshal(m, b)
@@ -402,7 +402,7 @@ func (m *CrystallizedStateResponse) Reset()         { *m = CrystallizedStateResp
 func (m *CrystallizedStateResponse) String() string { return proto.CompactTextString(m) }
 func (*CrystallizedStateResponse) ProtoMessage()    {}
 func (*CrystallizedStateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{7}
+	return fileDescriptor_messages_290630aaea57f115, []int{7}
 }
 func (m *CrystallizedStateResponse) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_CrystallizedStateResponse.Unmarshal(m, b)
@@ -451,7 +451,7 @@ func (m *CrystallizedState) Reset()         { *m = CrystallizedState{} }
 func (m *CrystallizedState) String() string { return proto.CompactTextString(m) }
 func (*CrystallizedState) ProtoMessage()    {}
 func (*CrystallizedState) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{8}
+	return fileDescriptor_messages_290630aaea57f115, []int{8}
 }
 func (m *CrystallizedState) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_CrystallizedState.Unmarshal(m, b)
@@ -566,7 +566,7 @@ func (m *ShardAndCommitteeArray) Reset()         { *m = ShardAndCommitteeArray{}
 func (m *ShardAndCommitteeArray) String() string { return proto.CompactTextString(m) }
 func (*ShardAndCommitteeArray) ProtoMessage()    {}
 func (*ShardAndCommitteeArray) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{9}
+	return fileDescriptor_messages_290630aaea57f115, []int{9}
 }
 func (m *ShardAndCommitteeArray) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ShardAndCommitteeArray.Unmarshal(m, b)
@@ -604,7 +604,7 @@ func (m *ActiveStateHashAnnounce) Reset()         { *m = ActiveStateHashAnnounce
 func (m *ActiveStateHashAnnounce) String() string { return proto.CompactTextString(m) }
 func (*ActiveStateHashAnnounce) ProtoMessage()    {}
 func (*ActiveStateHashAnnounce) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{10}
+	return fileDescriptor_messages_290630aaea57f115, []int{10}
 }
 func (m *ActiveStateHashAnnounce) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ActiveStateHashAnnounce.Unmarshal(m, b)
@@ -642,7 +642,7 @@ func (m *ActiveStateRequest) Reset()         { *m = ActiveStateRequest{} }
 func (m *ActiveStateRequest) String() string { return proto.CompactTextString(m) }
 func (*ActiveStateRequest) ProtoMessage()    {}
 func (*ActiveStateRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{11}
+	return fileDescriptor_messages_290630aaea57f115, []int{11}
 }
 func (m *ActiveStateRequest) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ActiveStateRequest.Unmarshal(m, b)
@@ -681,7 +681,7 @@ func (m *ShardAndCommittee) Reset()         { *m = ShardAndCommittee{} }
 func (m *ShardAndCommittee) String() string { return proto.CompactTextString(m) }
 func (*ShardAndCommittee) ProtoMessage()    {}
 func (*ShardAndCommittee) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{12}
+	return fileDescriptor_messages_290630aaea57f115, []int{12}
 }
 func (m *ShardAndCommittee) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ShardAndCommittee.Unmarshal(m, b)
@@ -726,7 +726,7 @@ func (m *ActiveStateResponse) Reset()         { *m = ActiveStateResponse{} }
 func (m *ActiveStateResponse) String() string { return proto.CompactTextString(m) }
 func (*ActiveStateResponse) ProtoMessage()    {}
 func (*ActiveStateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{13}
+	return fileDescriptor_messages_290630aaea57f115, []int{13}
 }
 func (m *ActiveStateResponse) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ActiveStateResponse.Unmarshal(m, b)
@@ -765,7 +765,7 @@ func (m *ActiveState) Reset()         { *m = ActiveState{} }
 func (m *ActiveState) String() string { return proto.CompactTextString(m) }
 func (*ActiveState) ProtoMessage()    {}
 func (*ActiveState) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{14}
+	return fileDescriptor_messages_290630aaea57f115, []int{14}
 }
 func (m *ActiveState) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ActiveState.Unmarshal(m, b)
@@ -816,7 +816,7 @@ func (m *ValidatorRecord) Reset()         { *m = ValidatorRecord{} }
 func (m *ValidatorRecord) String() string { return proto.CompactTextString(m) }
 func (*ValidatorRecord) ProtoMessage()    {}
 func (*ValidatorRecord) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{15}
+	return fileDescriptor_messages_290630aaea57f115, []int{15}
 }
 func (m *ValidatorRecord) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ValidatorRecord.Unmarshal(m, b)
@@ -903,7 +903,7 @@ func (m *AttestationRecord) Reset()         { *m = AttestationRecord{} }
 func (m *AttestationRecord) String() string { return proto.CompactTextString(m) }
 func (*AttestationRecord) ProtoMessage()    {}
 func (*AttestationRecord) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{16}
+	return fileDescriptor_messages_290630aaea57f115, []int{16}
 }
 func (m *AttestationRecord) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_AttestationRecord.Unmarshal(m, b)
@@ -992,7 +992,7 @@ func (m *CrosslinkRecord) Reset()         { *m = CrosslinkRecord{} }
 func (m *CrosslinkRecord) String() string { return proto.CompactTextString(m) }
 func (*CrosslinkRecord) ProtoMessage()    {}
 func (*CrosslinkRecord) Descriptor() ([]byte, []int) {
-	return fileDescriptor_messages_de8ea270ba5b06e0, []int{17}
+	return fileDescriptor_messages_290630aaea57f115, []int{17}
 }
 func (m *CrosslinkRecord) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_CrosslinkRecord.Unmarshal(m, b)
@@ -1033,6 +1033,44 @@ func (m *CrosslinkRecord) GetSlot() uint64 {
 	return 0
 }

+type AttestationHashes struct {
+	AttestationHash      [][]byte `protobuf:"bytes,1,rep,name=attestation_hash,json=attestationHash,proto3" json:"attestation_hash,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *AttestationHashes) Reset()         { *m = AttestationHashes{} }
+func (m *AttestationHashes) String() string { return proto.CompactTextString(m) }
+func (*AttestationHashes) ProtoMessage()    {}
+func (*AttestationHashes) Descriptor() ([]byte, []int) {
+	return fileDescriptor_messages_290630aaea57f115, []int{18}
+}
+func (m *AttestationHashes) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_AttestationHashes.Unmarshal(m, b)
+}
+func (m *AttestationHashes) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_AttestationHashes.Marshal(b, m, deterministic)
+}
+func (dst *AttestationHashes) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_AttestationHashes.Merge(dst, src)
+}
+func (m *AttestationHashes) XXX_Size() int {
+	return xxx_messageInfo_AttestationHashes.Size(m)
+}
+func (m *AttestationHashes) XXX_DiscardUnknown() {
+	xxx_messageInfo_AttestationHashes.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_AttestationHashes proto.InternalMessageInfo
+
+func (m *AttestationHashes) GetAttestationHash() [][]byte {
+	if m != nil {
+		return m.AttestationHash
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*BeaconBlockHashAnnounce)(nil), "ethereum.beacon.p2p.v1.BeaconBlockHashAnnounce")
 	proto.RegisterType((*BeaconBlockRequest)(nil), "ethereum.beacon.p2p.v1.BeaconBlockRequest")
@@ -1052,93 +1090,96 @@ func init() {
 	proto.RegisterType((*ValidatorRecord)(nil), "ethereum.beacon.p2p.v1.ValidatorRecord")
 	proto.RegisterType((*AttestationRecord)(nil), "ethereum.beacon.p2p.v1.AttestationRecord")
 	proto.RegisterType((*CrosslinkRecord)(nil), "ethereum.beacon.p2p.v1.CrosslinkRecord")
+	proto.RegisterType((*AttestationHashes)(nil), "ethereum.beacon.p2p.v1.AttestationHashes")
 	proto.RegisterEnum("ethereum.beacon.p2p.v1.Topic", Topic_name, Topic_value)
 }

-func init() { proto.RegisterFile("messages.proto", fileDescriptor_messages_de8ea270ba5b06e0) }
+func init() { proto.RegisterFile("messages.proto", fileDescriptor_messages_290630aaea57f115) }

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+var fileDescriptor_messages_290630aaea57f115 = []byte{
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 }
--- a/proto/beacon/p2p/v1/messages.proto
+++ b/proto/beacon/p2p/v1/messages.proto
@@ -124,3 +124,7 @@ message CrosslinkRecord {
  bytes blockhash = 2;
  uint64 slot = 3;
 }
+
+message AttestationHashes {
+  repeated bytes attestation_hash = 1;
+}