Use SingleAttestation for Gossip

beacon-chain/core/blocks/signature.go

@@ -15,6 +15,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/network/forks"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1/attestation"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
 
@@ -192,25 +193,38 @@ func createAttestationSignatureBatch(
 	descs := make([]string, len(atts))
 	for i, a := range atts {
 		sigs[i] = a.GetSignature()
-		committees, err := helpers.AttestationCommittees(ctx, beaconState, a)
-		if err != nil {
-			return nil, err
-		}
-		ia, err := attestation.ConvertToIndexed(ctx, a, committees...)
-		if err != nil {
-			return nil, err
-		}
-		if err := attestation.IsValidAttestationIndices(ctx, ia); err != nil {
-			return nil, err
-		}
-		indices := ia.GetAttestingIndices()
-		aggP, err := beaconState.AggregateKeyFromIndices(indices)
-		if err != nil {
-			return nil, err
-		}
-		pks[i] = aggP
 
-		root, err := signing.ComputeSigningRoot(ia.GetData(), domain)
+		if a.Version() >= version.Electra {
+			attestingIndex, err := a.GetAttestingIndex()
+			if err != nil {
+				return nil, err
+			}
+			pubkey := beaconState.PubkeyAtIndex(attestingIndex)
+			pks[i], err = bls.PublicKeyFromBytes(pubkey[:])
+			if err != nil {
+				return nil, errors.Wrap(err, "could not convert bytes to public key")
+			}
+		} else {
+			committees, err := helpers.AttestationCommittees(ctx, beaconState, a)
+			if err != nil {
+				return nil, err
+			}
+			ia, err := attestation.ConvertToIndexed(ctx, a, committees...)
+			if err != nil {
+				return nil, err
+			}
+			if err := attestation.IsValidAttestationIndices(ctx, ia); err != nil {
+				return nil, err
+			}
+			indices := ia.GetAttestingIndices()
+			aggP, err := beaconState.AggregateKeyFromIndices(indices)
+			if err != nil {
+				return nil, err
+			}
+			pks[i] = aggP
+		}
+
+		root, err := signing.ComputeSigningRoot(a.GetData(), domain)
 		if err != nil {
 			return nil, errors.Wrap(err, "could not get signing root of object")
 		}

beacon-chain/p2p/gossip_topic_mappings.go

@@ -47,7 +47,7 @@ func GossipTopicMappings(topic string, epoch primitives.Epoch) proto.Message {
 		return gossipMessage(topic)
 	case AttestationSubnetTopicFormat:
 		if epoch >= params.BeaconConfig().ElectraForkEpoch {
-			return &ethpb.AttestationElectra{}
+			return &ethpb.SingleAttestation{}
 		}
 		return gossipMessage(topic)
 	case AttesterSlashingSubnetTopicFormat:
@@ -101,7 +101,7 @@ func init() {
 	GossipTypeMapping[reflect.TypeOf(&ethpb.SignedBeaconBlockDeneb{})] = BlockSubnetTopicFormat
 	// Specially handle Electra objects.
 	GossipTypeMapping[reflect.TypeOf(&ethpb.SignedBeaconBlockElectra{})] = BlockSubnetTopicFormat
-	GossipTypeMapping[reflect.TypeOf(&ethpb.AttestationElectra{})] = AttestationSubnetTopicFormat
+	GossipTypeMapping[reflect.TypeOf(&ethpb.SingleAttestation{})] = AttestationSubnetTopicFormat
 	GossipTypeMapping[reflect.TypeOf(&ethpb.AttesterSlashingElectra{})] = AttesterSlashingSubnetTopicFormat
 	GossipTypeMapping[reflect.TypeOf(&ethpb.SignedAggregateAttestationAndProofElectra{})] = AggregateAndProofSubnetTopicFormat
 }

beacon-chain/p2p/gossip_topic_mappings_test.go

@@ -118,7 +118,7 @@ func TestGossipTopicMappings_CorrectType(t *testing.T) {
 	_, ok = pMessage.(*ethpb.SignedBeaconBlockElectra)
 	assert.Equal(t, true, ok)
 	pMessage = GossipTopicMappings(AttestationSubnetTopicFormat, electraForkEpoch)
-	_, ok = pMessage.(*ethpb.AttestationElectra)
+	_, ok = pMessage.(*ethpb.SingleAttestation)
 	assert.Equal(t, true, ok)
 	pMessage = GossipTopicMappings(AttesterSlashingSubnetTopicFormat, electraForkEpoch)
 	_, ok = pMessage.(*ethpb.AttesterSlashingElectra)

beacon-chain/p2p/types/object_mapping.go

@@ -112,7 +112,7 @@ func InitializeDataMaps() {
 			return &ethpb.Attestation{}, nil
 		},
 		bytesutil.ToBytes4(params.BeaconConfig().ElectraForkVersion): func() (ethpb.Att, error) {
-			return &ethpb.AttestationElectra{}, nil
+			return &ethpb.SingleAttestation{}, nil
 		},
 	}
 

beacon-chain/sync/validate_beacon_attestation.go

@@ -94,6 +94,13 @@ func (s *Service) validateCommitteeIndexBeaconAttestation(ctx context.Context, p
 
 	var validationRes pubsub.ValidationResult
 
+	if att.Version() >= version.Electra {
+		_, ok := att.(*eth.SingleAttestation)
+		if !ok {
+			return pubsub.ValidationReject, fmt.Errorf("electra attestation has wrong type (expected %T, got %T)", &eth.SingleAttestation{}, att)
+		}
+	}
+
 	committeeIndex, result, err := s.validateCommitteeIndex(ctx, att)
 	if result != pubsub.ValidationAccept {
 		wrappedErr := errors.Wrapf(err, "could not validate committee index for %s version", version.String(att.Version()))
@@ -101,9 +108,19 @@ func (s *Service) validateCommitteeIndexBeaconAttestation(ctx context.Context, p
 		return result, wrappedErr
 	}
 
+	var attestorIndexBytes []byte
 	if !features.Get().EnableSlasher {
 		// Verify this the first attestation received for the participating validator for the slot.
-		if s.hasSeenCommitteeIndicesSlot(data.Slot, committeeIndex, att.GetAggregationBits()) {
+		if att.Version() >= version.Electra {
+			attestorIndex, err := att.GetAttestingIndex()
+			if err != nil {
+				return pubsub.ValidationIgnore, err
+			}
+			attestorIndexBytes = bytesutil.Bytes32(uint64(attestorIndex))
+		} else {
+			attestorIndexBytes = att.GetAggregationBits()
+		}
+		if s.hasSeenCommitteeIndicesSlot(data.Slot, committeeIndex, attestorIndexBytes) {
 			return pubsub.ValidationIgnore, nil
 		}
 
@@ -121,12 +138,12 @@ func (s *Service) validateCommitteeIndexBeaconAttestation(ctx context.Context, p
 	if !s.hasBlockAndState(ctx, blockRoot) {
 		// A node doesn't have the block, it'll request from peer while saving the pending attestation to a queue.
 		if att.Version() >= version.Electra {
-			a, ok := att.(*eth.AttestationElectra)
+			a, ok := att.(*eth.SingleAttestation)
 			// This will never fail in practice because we asserted the version
 			if !ok {
-				return pubsub.ValidationIgnore, fmt.Errorf("attestation has wrong type (expected %T, got %T)", &eth.AttestationElectra{}, att)
+				return pubsub.ValidationIgnore, fmt.Errorf("attestation has wrong type (expected %T, got %T)", &eth.Attestation{}, att)
 			}
-			s.savePendingAtt(&eth.SignedAggregateAttestationAndProofElectra{Message: &eth.AggregateAttestationAndProofElectra{Aggregate: a}})
+			s.savePendingAtt(a)
 		} else {
 			a, ok := att.(*eth.Attestation)
 			// This will never fail in practice because we asserted the version
@@ -193,7 +210,7 @@ func (s *Service) validateCommitteeIndexBeaconAttestation(ctx context.Context, p
 		}()
 	}
 
-	s.setSeenCommitteeIndicesSlot(data.Slot, committeeIndex, att.GetAggregationBits())
+	s.setSeenCommitteeIndicesSlot(data.Slot, committeeIndex, attestorIndexBytes)
 
 	msg.ValidatorData = att
 
@@ -256,21 +273,23 @@ func (s *Service) validateUnaggregatedAttWithState(ctx context.Context, a eth.At
 	ctx, span := trace.StartSpan(ctx, "sync.validateUnaggregatedAttWithState")
 	defer span.End()
 
-	committeeIndex, err := a.GetCommitteeIndex()
-	if err != nil {
-		return pubsub.ValidationIgnore, err
-	}
+	if a.Version() < version.Electra {
+		committeeIndex, err := a.GetCommitteeIndex()
+		if err != nil {
+			return pubsub.ValidationIgnore, err
+		}
 
-	committee, result, err := s.validateBitLength(ctx, bs, a.GetData().Slot, committeeIndex, a.GetAggregationBits())
-	if result != pubsub.ValidationAccept {
-		return result, err
-	}
+		committee, result, err := s.validateBitLength(ctx, bs, a.GetData().Slot, committeeIndex, a.GetAggregationBits())
+		if result != pubsub.ValidationAccept {
+			return result, err
+		}
 
-	// Attestation must be unaggregated and the bit index must exist in the range of committee indices.
-	// Note: The Ethereum Beacon chain spec suggests (len(get_attesting_indices(state, attestation.data, attestation.aggregation_bits)) == 1)
-	// however this validation can be achieved without use of get_attesting_indices which is an O(n) lookup.
-	if a.GetAggregationBits().Count() != 1 || a.GetAggregationBits().BitIndices()[0] >= len(committee) {
-		return pubsub.ValidationReject, errors.New("attestation bitfield is invalid")
+		// Attestation must be unaggregated and the bit index must exist in the range of committee indices.
+		// Note: The Ethereum Beacon chain spec suggests (len(get_attesting_indices(state, attestation.data, attestation.aggregation_bits)) == 1)
+		// however this validation can be achieved without use of get_attesting_indices which is an O(n) lookup.
+		if a.GetAggregationBits().Count() != 1 || a.GetAggregationBits().BitIndices()[0] >= len(committee) {
+			return pubsub.ValidationReject, errors.New("attestation bitfield is invalid")
+		}
 	}
 
 	set, err := blocks.AttestationSignatureBatch(ctx, bs, []eth.Att{a})

beacon-chain/sync/validate_beacon_attestation_electra.go

@@ -11,7 +11,6 @@ import (
 )
 
 // validateCommitteeIndexElectra implements the following checks from the spec:
-//   - [REJECT] len(committee_indices) == 1, where committee_indices = get_committee_indices(attestation).
 //   - [REJECT] attestation.data.index == 0
 func validateCommitteeIndexElectra(ctx context.Context, a ethpb.Att) (primitives.CommitteeIndex, pubsub.ValidationResult, error) {
 	_, span := trace.StartSpan(ctx, "sync.validateCommitteeIndexElectra")
@@ -24,5 +23,8 @@ func validateCommitteeIndexElectra(ctx context.Context, a ethpb.Att) (primitives
 	if err != nil {
 		return 0, pubsub.ValidationReject, err
 	}
+	if committeeIndex == 0 {
+		return 0, pubsub.ValidationReject, fmt.Errorf("attestation.data.index is 0")
+	}
 	return committeeIndex, pubsub.ValidationAccept, nil
 }

proto/prysm/v1alpha1/BUILD.bazel

@@ -152,6 +152,7 @@ ssz_electra_objs = [
     "SignedBeaconBlockElectra",
     "SignedBlindedBeaconBlockElectra",
     "SignedConsolidation",
+    "SingleAttestation",
 ]
 
 ssz_gen_marshal(

proto/prysm/v1alpha1/attestation.go

@@ -25,6 +25,7 @@ type Att interface {
 	CommitteeBitsVal() bitfield.Bitfield
 	GetSignature() []byte
 	GetCommitteeIndex() (primitives.CommitteeIndex, error)
+	GetAttestingIndex() (primitives.ValidatorIndex, error)
 }
 
 // IndexedAtt defines common functionality for all indexed attestation types.
@@ -135,6 +136,11 @@ func (a *Attestation) GetCommitteeIndex() (primitives.CommitteeIndex, error) {
 	return a.Data.CommitteeIndex, nil
 }
 
+// GetAttestingIndex --
+func (a *Attestation) GetAttestingIndex() (primitives.ValidatorIndex, error) {
+	return 0, errors.New("attestation does not have attesting index field")
+}
+
 // Version --
 func (a *PendingAttestation) Version() int {
 	return version.Phase0
@@ -176,6 +182,11 @@ func (a *PendingAttestation) GetCommitteeIndex() (primitives.CommitteeIndex, err
 	return a.Data.CommitteeIndex, nil
 }
 
+// GetAttestingIndex --
+func (a *PendingAttestation) GetAttestingIndex() (primitives.ValidatorIndex, error) {
+	return 0, errors.New("pending attestation does not have attesting index field")
+}
+
 // Version --
 func (a *AttestationElectra) Version() int {
 	return version.Electra
@@ -222,6 +233,11 @@ func (a *AttestationElectra) GetCommitteeIndex() (primitives.CommitteeIndex, err
 	return primitives.CommitteeIndex(uint64(indices[0])), nil
 }
 
+// GetAttestingIndex --
+func (a *AttestationElectra) GetAttestingIndex() (primitives.ValidatorIndex, error) {
+	return 0, errors.New("attestation electra does not have attesting index field")
+}
+
 // Version --
 func (a *IndexedAttestation) Version() int {
 	return version.Phase0
@@ -354,3 +370,64 @@ func (a *SignedAggregateAttestationAndProofElectra) Version() int {
 func (a *SignedAggregateAttestationAndProofElectra) AggregateAttestationAndProof() AggregateAttAndProof {
 	return a.Message
 }
+
+// Version --
+func (a *SingleAttestation) Version() int {
+	return version.Electra
+}
+
+// Clone --
+func (a *SingleAttestation) Clone() Att {
+	return a.Copy()
+}
+
+// Copy --
+func (a *SingleAttestation) Copy() *SingleAttestation {
+	if a == nil {
+		return nil
+	}
+	return &SingleAttestation{
+		CommitteeId:   a.CommitteeId,
+		AttesterIndex: a.AttesterIndex,
+		Data:          a.Data.Copy(),
+		Signature:     bytesutil.SafeCopyBytes(a.Signature),
+	}
+}
+
+// CommitteeBitsVal --
+func (a *SingleAttestation) CommitteeBitsVal() bitfield.Bitfield {
+	cb := primitives.NewAttestationCommitteeBits()
+	cb.SetBitAt(uint64(a.CommitteeId), true)
+	return cb
+}
+
+// GetAggregationBits --
+func (a *SingleAttestation) GetAggregationBits() bitfield.Bitlist {
+	return nil
+}
+
+// GetCommitteeIndex --
+func (a *SingleAttestation) GetCommitteeIndex() (primitives.CommitteeIndex, error) {
+	return a.CommitteeId, nil
+}
+
+// GetAttestingIndex --
+func (a *SingleAttestation) GetAttestingIndex() (primitives.ValidatorIndex, error) {
+	return a.AttesterIndex, nil
+}
+
+type PendingSyncAttestation interface {
+	IsAttestation()
+	AggregateAttestationAndProof() AggregateAttAndProof
+	SignedAggregateAttAndProof() SignedAggregateAttAndProof
+}
+
+// IsAttestation Implement the interface for SignedAggregateAttAndProof
+func (s *SignedAggregateAttestationAndProof) IsAttestation() {}
+
+// IsAttestation Implement the interface for SingleAttestation
+func (s *SingleAttestation) IsAttestation() {}
+
+func (a *SingleAttestation) AggregateAttestationAndProof() AggregateAttAndProof {
+	panic("implement me")
+}

proto/prysm/v1alpha1/attestation.pb.go

@@ -528,6 +528,77 @@ func (x *Checkpoint) GetRoot() []byte {
 	return nil
 }
 
+type SingleAttestation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	CommitteeId   github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.CommitteeIndex `protobuf:"varint,1,opt,name=committee_id,json=committeeId,proto3" json:"committee_id,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives.CommitteeIndex"`
+	AttesterIndex github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.ValidatorIndex `protobuf:"varint,2,opt,name=attester_index,json=attesterIndex,proto3" json:"attester_index,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives.ValidatorIndex"`
+	Data          *AttestationData                                                            `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+	Signature     []byte                                                                      `protobuf:"bytes,4,opt,name=signature,proto3" json:"signature,omitempty" ssz-size:"96"`
+}
+
+func (x *SingleAttestation) Reset() {
+	*x = SingleAttestation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_prysm_v1alpha1_attestation_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SingleAttestation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SingleAttestation) ProtoMessage() {}
+
+func (x *SingleAttestation) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_prysm_v1alpha1_attestation_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SingleAttestation.ProtoReflect.Descriptor instead.
+func (*SingleAttestation) Descriptor() ([]byte, []int) {
+	return file_proto_prysm_v1alpha1_attestation_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *SingleAttestation) GetCommitteeId() github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.CommitteeIndex {
+	if x != nil {
+		return x.CommitteeId
+	}
+	return github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.CommitteeIndex(0)
+}
+
+func (x *SingleAttestation) GetAttesterIndex() github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.ValidatorIndex {
+	if x != nil {
+		return x.AttesterIndex
+	}
+	return github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.ValidatorIndex(0)
+}
+
+func (x *SingleAttestation) GetData() *AttestationData {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+func (x *SingleAttestation) GetSignature() []byte {
+	if x != nil {
+		return x.Signature
+	}
+	return nil
+}
+
 var File_proto_prysm_v1alpha1_attestation_proto protoreflect.FileDescriptor
 
 var file_proto_prysm_v1alpha1_attestation_proto_rawDesc = []byte{
@@ -659,17 +730,39 @@ var file_proto_prysm_v1alpha1_attestation_proto_rawDesc = []byte{
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+	0x67, 0x2e, 0x65, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x2e, 0x65, 0x74, 0x68, 0x2e, 0x76,
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+	0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x70, 0x72, 0x79, 0x73, 0x6d, 0x2f, 0x76, 0x31, 0x61, 0x6c, 0x70,
+	0x68, 0x61, 0x31, 0x3b, 0x65, 0x74, 0x68, 0xaa, 0x02, 0x15, 0x45, 0x74, 0x68, 0x65, 0x72, 0x65,
+	0x75, 0x6d, 0x2e, 0x45, 0x74, 0x68, 0x2e, 0x76, 0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, 0x31, 0xca,
+	0x02, 0x15, 0x45, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x5c, 0x45, 0x74, 0x68, 0x5c, 0x76,
+	0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -684,7 +777,7 @@ func file_proto_prysm_v1alpha1_attestation_proto_rawDescGZIP() []byte {
 	return file_proto_prysm_v1alpha1_attestation_proto_rawDescData
 }
 
-var file_proto_prysm_v1alpha1_attestation_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_proto_prysm_v1alpha1_attestation_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
 var file_proto_prysm_v1alpha1_attestation_proto_goTypes = []interface{}{
 	(*Attestation)(nil),                               // 0: ethereum.eth.v1alpha1.Attestation
 	(*AttestationElectra)(nil),                        // 1: ethereum.eth.v1alpha1.AttestationElectra
@@ -694,6 +787,7 @@ var file_proto_prysm_v1alpha1_attestation_proto_goTypes = []interface{}{
 	(*SignedAggregateAttestationAndProofElectra)(nil), // 5: ethereum.eth.v1alpha1.SignedAggregateAttestationAndProofElectra
 	(*AttestationData)(nil),                           // 6: ethereum.eth.v1alpha1.AttestationData
 	(*Checkpoint)(nil),                                // 7: ethereum.eth.v1alpha1.Checkpoint
+	(*SingleAttestation)(nil),                         // 8: ethereum.eth.v1alpha1.SingleAttestation
 }
 var file_proto_prysm_v1alpha1_attestation_proto_depIdxs = []int32{
 	6, // 0: ethereum.eth.v1alpha1.Attestation.data:type_name -> ethereum.eth.v1alpha1.AttestationData
@@ -704,11 +798,12 @@ var file_proto_prysm_v1alpha1_attestation_proto_depIdxs = []int32{
 	3, // 5: ethereum.eth.v1alpha1.SignedAggregateAttestationAndProofElectra.message:type_name -> ethereum.eth.v1alpha1.AggregateAttestationAndProofElectra
 	7, // 6: ethereum.eth.v1alpha1.AttestationData.source:type_name -> ethereum.eth.v1alpha1.Checkpoint
 	7, // 7: ethereum.eth.v1alpha1.AttestationData.target:type_name -> ethereum.eth.v1alpha1.Checkpoint
-	8, // [8:8] is the sub-list for method output_type
-	8, // [8:8] is the sub-list for method input_type
-	8, // [8:8] is the sub-list for extension type_name
-	8, // [8:8] is the sub-list for extension extendee
-	0, // [0:8] is the sub-list for field type_name
+	6, // 8: ethereum.eth.v1alpha1.SingleAttestation.data:type_name -> ethereum.eth.v1alpha1.AttestationData
+	9, // [9:9] is the sub-list for method output_type
+	9, // [9:9] is the sub-list for method input_type
+	9, // [9:9] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for extension extendee
+	0, // [0:9] is the sub-list for field type_name
 }
 
 func init() { file_proto_prysm_v1alpha1_attestation_proto_init() }
@@ -813,6 +908,18 @@ func file_proto_prysm_v1alpha1_attestation_proto_init() {
 				return nil
 			}
 		}
+		file_proto_prysm_v1alpha1_attestation_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SingleAttestation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -820,7 +927,7 @@ func file_proto_prysm_v1alpha1_attestation_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_proto_prysm_v1alpha1_attestation_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   8,
+			NumMessages:   9,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

proto/prysm/v1alpha1/attestation.proto

@@ -117,3 +117,10 @@ message Checkpoint {
     // Block root of the checkpoint references.
     bytes root = 2 [(ethereum.eth.ext.ssz_size) = "32"];
 }
+
+message SingleAttestation {
+    uint64 committee_id = 1  [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v5/consensus-types/primitives.CommitteeIndex"];
+    uint64 attester_index = 2  [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v5/consensus-types/primitives.ValidatorIndex"];
+    AttestationData data = 3;
+    bytes signature = 4 [(ethereum.eth.ext.ssz_size) = "96"];
+}

proto/prysm/v1alpha1/capella.ssz.go

@@ -1,5 +1,5 @@
 // Code generated by fastssz. DO NOT EDIT.
-// Hash: 13b762a7d53ab6cf5d5ffb582d580edb05efc65de762692f09af914819d3bb3e
+// Hash: 371a28cc17d29788d01a03c20e917fd188c5fa6e2790531e00fd86fe2cb739b9
 package eth
 
 import (

proto/prysm/v1alpha1/electra.ssz.go

@@ -1,5 +1,5 @@
 // Code generated by fastssz. DO NOT EDIT.
-// Hash: 502599304fd370b8602d212eaf1956fe5bf034fe59c75d1a3a6e3db8bcde291a
+// Hash: 5d4e7cc536966b4e3449dd52a1b3e5cbe2ddfb28746f8cf6163de67a4318c5be
 package eth
 
 import (
@@ -384,6 +384,107 @@ func (s *SignedAggregateAttestationAndProofElectra) HashTreeRootWith(hh *ssz.Has
 	return
 }
 
+// MarshalSSZ ssz marshals the SingleAttestation object
+func (s *SingleAttestation) MarshalSSZ() ([]byte, error) {
+	return ssz.MarshalSSZ(s)
+}
+
+// MarshalSSZTo ssz marshals the SingleAttestation object to a target array
+func (s *SingleAttestation) MarshalSSZTo(buf []byte) (dst []byte, err error) {
+	dst = buf
+
+	// Field (0) 'CommitteeId'
+	dst = ssz.MarshalUint64(dst, uint64(s.CommitteeId))
+
+	// Field (1) 'AttesterIndex'
+	dst = ssz.MarshalUint64(dst, uint64(s.AttesterIndex))
+
+	// Field (2) 'Data'
+	if s.Data == nil {
+		s.Data = new(AttestationData)
+	}
+	if dst, err = s.Data.MarshalSSZTo(dst); err != nil {
+		return
+	}
+
+	// Field (3) 'Signature'
+	if size := len(s.Signature); size != 96 {
+		err = ssz.ErrBytesLengthFn("--.Signature", size, 96)
+		return
+	}
+	dst = append(dst, s.Signature...)
+
+	return
+}
+
+// UnmarshalSSZ ssz unmarshals the SingleAttestation object
+func (s *SingleAttestation) UnmarshalSSZ(buf []byte) error {
+	var err error
+	size := uint64(len(buf))
+	if size != 240 {
+		return ssz.ErrSize
+	}
+
+	// Field (0) 'CommitteeId'
+	s.CommitteeId = github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.CommitteeIndex(ssz.UnmarshallUint64(buf[0:8]))
+
+	// Field (1) 'AttesterIndex'
+	s.AttesterIndex = github_com_prysmaticlabs_prysm_v5_consensus_types_primitives.ValidatorIndex(ssz.UnmarshallUint64(buf[8:16]))
+
+	// Field (2) 'Data'
+	if s.Data == nil {
+		s.Data = new(AttestationData)
+	}
+	if err = s.Data.UnmarshalSSZ(buf[16:144]); err != nil {
+		return err
+	}
+
+	// Field (3) 'Signature'
+	if cap(s.Signature) == 0 {
+		s.Signature = make([]byte, 0, len(buf[144:240]))
+	}
+	s.Signature = append(s.Signature, buf[144:240]...)
+
+	return err
+}
+
+// SizeSSZ returns the ssz encoded size in bytes for the SingleAttestation object
+func (s *SingleAttestation) SizeSSZ() (size int) {
+	size = 240
+	return
+}
+
+// HashTreeRoot ssz hashes the SingleAttestation object
+func (s *SingleAttestation) HashTreeRoot() ([32]byte, error) {
+	return ssz.HashWithDefaultHasher(s)
+}
+
+// HashTreeRootWith ssz hashes the SingleAttestation object with a hasher
+func (s *SingleAttestation) HashTreeRootWith(hh *ssz.Hasher) (err error) {
+	indx := hh.Index()
+
+	// Field (0) 'CommitteeId'
+	hh.PutUint64(uint64(s.CommitteeId))
+
+	// Field (1) 'AttesterIndex'
+	hh.PutUint64(uint64(s.AttesterIndex))
+
+	// Field (2) 'Data'
+	if err = s.Data.HashTreeRootWith(hh); err != nil {
+		return
+	}
+
+	// Field (3) 'Signature'
+	if size := len(s.Signature); size != 96 {
+		err = ssz.ErrBytesLengthFn("--.Signature", size, 96)
+		return
+	}
+	hh.PutBytes(s.Signature)
+
+	hh.Merkleize(indx)
+	return
+}
+
 // MarshalSSZ ssz marshals the AttesterSlashingElectra object
 func (a *AttesterSlashingElectra) MarshalSSZ() ([]byte, error) {
 	return ssz.MarshalSSZ(a)