diff --git a/proto/eth/v1alpha1/beacon_block_altair.pb.go b/proto/eth/v1alpha1/beacon_block_altair.pb.go
deleted file mode 100755
index 4e279d83c9..0000000000
--- a/proto/eth/v1alpha1/beacon_block_altair.pb.go
+++ /dev/null
@@ -1,559 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.25.0
-// 	protoc        v3.15.8
-// source: proto/eth/v1alpha1/beacon_block_altair.proto
-
-package eth
-
-import (
-	reflect "reflect"
-	sync "sync"
-
-	proto "github.com/golang/protobuf/proto"
-	github_com_prysmaticlabs_eth2_types "github.com/prysmaticlabs/eth2-types"
-	github_com_prysmaticlabs_go_bitfield "github.com/prysmaticlabs/go-bitfield"
-	_ "github.com/prysmaticlabs/prysm/proto/eth/ext"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
-type SignedBeaconBlockAltair struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Block     *BeaconBlockAltair `protobuf:"bytes,1,opt,name=block,proto3" json:"block,omitempty"`
-	Signature []byte             `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty" ssz-size:"96"`
-}
-
-func (x *SignedBeaconBlockAltair) Reset() {
-	*x = SignedBeaconBlockAltair{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SignedBeaconBlockAltair) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SignedBeaconBlockAltair) ProtoMessage() {}
-
-func (x *SignedBeaconBlockAltair) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[0]
-	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 SignedBeaconBlockAltair.ProtoReflect.Descriptor instead.
-func (*SignedBeaconBlockAltair) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *SignedBeaconBlockAltair) GetBlock() *BeaconBlockAltair {
-	if x != nil {
-		return x.Block
-	}
-	return nil
-}
-
-func (x *SignedBeaconBlockAltair) GetSignature() []byte {
-	if x != nil {
-		return x.Signature
-	}
-	return nil
-}
-
-type BeaconBlockAltair struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Slot          github_com_prysmaticlabs_eth2_types.Slot           `protobuf:"varint,1,opt,name=slot,proto3" json:"slot,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.Slot"`
-	ProposerIndex github_com_prysmaticlabs_eth2_types.ValidatorIndex `protobuf:"varint,2,opt,name=proposer_index,json=proposerIndex,proto3" json:"proposer_index,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.ValidatorIndex"`
-	ParentRoot    []byte                                             `protobuf:"bytes,3,opt,name=parent_root,json=parentRoot,proto3" json:"parent_root,omitempty" ssz-size:"32"`
-	StateRoot     []byte                                             `protobuf:"bytes,4,opt,name=state_root,json=stateRoot,proto3" json:"state_root,omitempty" ssz-size:"32"`
-	Body          *BeaconBlockBodyAltair                             `protobuf:"bytes,5,opt,name=body,proto3" json:"body,omitempty"`
-}
-
-func (x *BeaconBlockAltair) Reset() {
-	*x = BeaconBlockAltair{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *BeaconBlockAltair) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*BeaconBlockAltair) ProtoMessage() {}
-
-func (x *BeaconBlockAltair) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[1]
-	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 BeaconBlockAltair.ProtoReflect.Descriptor instead.
-func (*BeaconBlockAltair) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *BeaconBlockAltair) GetSlot() github_com_prysmaticlabs_eth2_types.Slot {
-	if x != nil {
-		return x.Slot
-	}
-	return github_com_prysmaticlabs_eth2_types.Slot(0)
-}
-
-func (x *BeaconBlockAltair) GetProposerIndex() github_com_prysmaticlabs_eth2_types.ValidatorIndex {
-	if x != nil {
-		return x.ProposerIndex
-	}
-	return github_com_prysmaticlabs_eth2_types.ValidatorIndex(0)
-}
-
-func (x *BeaconBlockAltair) GetParentRoot() []byte {
-	if x != nil {
-		return x.ParentRoot
-	}
-	return nil
-}
-
-func (x *BeaconBlockAltair) GetStateRoot() []byte {
-	if x != nil {
-		return x.StateRoot
-	}
-	return nil
-}
-
-func (x *BeaconBlockAltair) GetBody() *BeaconBlockBodyAltair {
-	if x != nil {
-		return x.Body
-	}
-	return nil
-}
-
-type BeaconBlockBodyAltair struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	RandaoReveal      []byte                 `protobuf:"bytes,1,opt,name=randao_reveal,json=randaoReveal,proto3" json:"randao_reveal,omitempty" ssz-size:"96"`
-	Eth1Data          *Eth1Data              `protobuf:"bytes,2,opt,name=eth1_data,json=eth1Data,proto3" json:"eth1_data,omitempty"`
-	Graffiti          []byte                 `protobuf:"bytes,3,opt,name=graffiti,proto3" json:"graffiti,omitempty" ssz-size:"32"`
-	ProposerSlashings []*ProposerSlashing    `protobuf:"bytes,4,rep,name=proposer_slashings,json=proposerSlashings,proto3" json:"proposer_slashings,omitempty" ssz-max:"16"`
-	AttesterSlashings []*AttesterSlashing    `protobuf:"bytes,5,rep,name=attester_slashings,json=attesterSlashings,proto3" json:"attester_slashings,omitempty" ssz-max:"2"`
-	Attestations      []*Attestation         `protobuf:"bytes,6,rep,name=attestations,proto3" json:"attestations,omitempty" ssz-max:"128"`
-	Deposits          []*Deposit             `protobuf:"bytes,7,rep,name=deposits,proto3" json:"deposits,omitempty" ssz-max:"16"`
-	VoluntaryExits    []*SignedVoluntaryExit `protobuf:"bytes,8,rep,name=voluntary_exits,json=voluntaryExits,proto3" json:"voluntary_exits,omitempty" ssz-max:"16"`
-	SyncAggregate     *SyncAggregate         `protobuf:"bytes,9,opt,name=sync_aggregate,json=syncAggregate,proto3" json:"sync_aggregate,omitempty"`
-}
-
-func (x *BeaconBlockBodyAltair) Reset() {
-	*x = BeaconBlockBodyAltair{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *BeaconBlockBodyAltair) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*BeaconBlockBodyAltair) ProtoMessage() {}
-
-func (x *BeaconBlockBodyAltair) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[2]
-	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 BeaconBlockBodyAltair.ProtoReflect.Descriptor instead.
-func (*BeaconBlockBodyAltair) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescGZIP(), []int{2}
-}
-
-func (x *BeaconBlockBodyAltair) GetRandaoReveal() []byte {
-	if x != nil {
-		return x.RandaoReveal
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetEth1Data() *Eth1Data {
-	if x != nil {
-		return x.Eth1Data
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetGraffiti() []byte {
-	if x != nil {
-		return x.Graffiti
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetProposerSlashings() []*ProposerSlashing {
-	if x != nil {
-		return x.ProposerSlashings
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetAttesterSlashings() []*AttesterSlashing {
-	if x != nil {
-		return x.AttesterSlashings
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetAttestations() []*Attestation {
-	if x != nil {
-		return x.Attestations
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetDeposits() []*Deposit {
-	if x != nil {
-		return x.Deposits
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetVoluntaryExits() []*SignedVoluntaryExit {
-	if x != nil {
-		return x.VoluntaryExits
-	}
-	return nil
-}
-
-func (x *BeaconBlockBodyAltair) GetSyncAggregate() *SyncAggregate {
-	if x != nil {
-		return x.SyncAggregate
-	}
-	return nil
-}
-
-type SyncAggregate struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	SyncCommitteeBits      github_com_prysmaticlabs_go_bitfield.Bitvector512 `protobuf:"bytes,1,opt,name=sync_committee_bits,json=syncCommitteeBits,proto3" json:"sync_committee_bits,omitempty" cast-type:"github.com/prysmaticlabs/go-bitfield.Bitvector512" ssz-size:"64"`
-	SyncCommitteeSignature []byte                                            `protobuf:"bytes,2,opt,name=sync_committee_signature,json=syncCommitteeSignature,proto3" json:"sync_committee_signature,omitempty" ssz-size:"96"`
-}
-
-func (x *SyncAggregate) Reset() {
-	*x = SyncAggregate{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SyncAggregate) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SyncAggregate) ProtoMessage() {}
-
-func (x *SyncAggregate) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[3]
-	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 SyncAggregate.ProtoReflect.Descriptor instead.
-func (*SyncAggregate) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescGZIP(), []int{3}
-}
-
-func (x *SyncAggregate) GetSyncCommitteeBits() github_com_prysmaticlabs_go_bitfield.Bitvector512 {
-	if x != nil {
-		return x.SyncCommitteeBits
-	}
-	return github_com_prysmaticlabs_go_bitfield.Bitvector512(nil)
-}
-
-func (x *SyncAggregate) GetSyncCommitteeSignature() []byte {
-	if x != nil {
-		return x.SyncCommitteeSignature
-	}
-	return nil
-}
-
-var File_proto_eth_v1alpha1_beacon_block_altair_proto protoreflect.FileDescriptor
-
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-}
-
-var (
-	file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescOnce sync.Once
-	file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescData = file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDesc
-)
-
-func file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescGZIP() []byte {
-	file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescOnce.Do(func() {
-		file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescData)
-	})
-	return file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDescData
-}
-
-var file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
-var file_proto_eth_v1alpha1_beacon_block_altair_proto_goTypes = []interface{}{
-	(*SignedBeaconBlockAltair)(nil), // 0: ethereum.eth.v1alpha1.SignedBeaconBlockAltair
-	(*BeaconBlockAltair)(nil),       // 1: ethereum.eth.v1alpha1.BeaconBlockAltair
-	(*BeaconBlockBodyAltair)(nil),   // 2: ethereum.eth.v1alpha1.BeaconBlockBodyAltair
-	(*SyncAggregate)(nil),           // 3: ethereum.eth.v1alpha1.SyncAggregate
-	(*Eth1Data)(nil),                // 4: ethereum.eth.v1alpha1.Eth1Data
-	(*ProposerSlashing)(nil),        // 5: ethereum.eth.v1alpha1.ProposerSlashing
-	(*AttesterSlashing)(nil),        // 6: ethereum.eth.v1alpha1.AttesterSlashing
-	(*Attestation)(nil),             // 7: ethereum.eth.v1alpha1.Attestation
-	(*Deposit)(nil),                 // 8: ethereum.eth.v1alpha1.Deposit
-	(*SignedVoluntaryExit)(nil),     // 9: ethereum.eth.v1alpha1.SignedVoluntaryExit
-}
-var file_proto_eth_v1alpha1_beacon_block_altair_proto_depIdxs = []int32{
-	1, // 0: ethereum.eth.v1alpha1.SignedBeaconBlockAltair.block:type_name -> ethereum.eth.v1alpha1.BeaconBlockAltair
-	2, // 1: ethereum.eth.v1alpha1.BeaconBlockAltair.body:type_name -> ethereum.eth.v1alpha1.BeaconBlockBodyAltair
-	4, // 2: ethereum.eth.v1alpha1.BeaconBlockBodyAltair.eth1_data:type_name -> ethereum.eth.v1alpha1.Eth1Data
-	5, // 3: ethereum.eth.v1alpha1.BeaconBlockBodyAltair.proposer_slashings:type_name -> ethereum.eth.v1alpha1.ProposerSlashing
-	6, // 4: ethereum.eth.v1alpha1.BeaconBlockBodyAltair.attester_slashings:type_name -> ethereum.eth.v1alpha1.AttesterSlashing
-	7, // 5: ethereum.eth.v1alpha1.BeaconBlockBodyAltair.attestations:type_name -> ethereum.eth.v1alpha1.Attestation
-	8, // 6: ethereum.eth.v1alpha1.BeaconBlockBodyAltair.deposits:type_name -> ethereum.eth.v1alpha1.Deposit
-	9, // 7: ethereum.eth.v1alpha1.BeaconBlockBodyAltair.voluntary_exits:type_name -> ethereum.eth.v1alpha1.SignedVoluntaryExit
-	3, // 8: ethereum.eth.v1alpha1.BeaconBlockBodyAltair.sync_aggregate:type_name -> ethereum.eth.v1alpha1.SyncAggregate
-	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_eth_v1alpha1_beacon_block_altair_proto_init() }
-func file_proto_eth_v1alpha1_beacon_block_altair_proto_init() {
-	if File_proto_eth_v1alpha1_beacon_block_altair_proto != nil {
-		return
-	}
-	file_proto_eth_v1alpha1_attestation_proto_init()
-	file_proto_eth_v1alpha1_beacon_block_proto_init()
-	if !protoimpl.UnsafeEnabled {
-		file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SignedBeaconBlockAltair); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*BeaconBlockAltair); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*BeaconBlockBodyAltair); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SyncAggregate); 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{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   4,
-			NumExtensions: 0,
-			NumServices:   0,
-		},
-		GoTypes:           file_proto_eth_v1alpha1_beacon_block_altair_proto_goTypes,
-		DependencyIndexes: file_proto_eth_v1alpha1_beacon_block_altair_proto_depIdxs,
-		MessageInfos:      file_proto_eth_v1alpha1_beacon_block_altair_proto_msgTypes,
-	}.Build()
-	File_proto_eth_v1alpha1_beacon_block_altair_proto = out.File
-	file_proto_eth_v1alpha1_beacon_block_altair_proto_rawDesc = nil
-	file_proto_eth_v1alpha1_beacon_block_altair_proto_goTypes = nil
-	file_proto_eth_v1alpha1_beacon_block_altair_proto_depIdxs = nil
-}
diff --git a/proto/eth/v1alpha1/beacon_block_altair.pb.gw.go b/proto/eth/v1alpha1/beacon_block_altair.pb.gw.go
deleted file mode 100755
index 33d2475db2..0000000000
--- a/proto/eth/v1alpha1/beacon_block_altair.pb.gw.go
+++ /dev/null
@@ -1,3 +0,0 @@
-// +build ignore
-
-package ignore
diff --git a/proto/eth/v1alpha1/beacon_block_altair.proto b/proto/eth/v1alpha1/beacon_block_altair.proto
deleted file mode 100644
index 9168bd19a9..0000000000
--- a/proto/eth/v1alpha1/beacon_block_altair.proto
+++ /dev/null
@@ -1,99 +0,0 @@
-// Copyright 2021 Prysmatic Labs.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-syntax = "proto3";
-
-package ethereum.eth.v1alpha1;
-
-import "proto/eth/ext/options.proto";
-import "proto/eth/v1alpha1/attestation.proto";
-import "proto/eth/v1alpha1/beacon_block.proto";
-
-option csharp_namespace = "Ethereum.Eth.v1alpha1";
-option go_package = "github.com/prysmaticlabs/prysm/proto/eth/v1alpha1;eth";
-option java_multiple_files = true;
-option java_outer_classname = "BeaconBlockAltairProto";
-option java_package = "org.ethereum.eth.v1alpha1";
-option php_namespace = "Ethereum\\Eth\\v1alpha1";
-
-// The signed version of a Altair(HF1) beacon block.
-message SignedBeaconBlockAltair {
-  // The unsigned beacon block itself.
-  BeaconBlockAltair block = 1;
-
-  // 96 byte BLS signature from the validator that produced this block.
-  bytes signature = 2 [(ethereum.eth.ext.ssz_size) = "96"];
-}
-
-// The unsigned version of a Altair(HF1) beacon block.. The message does not contain a validator signature.
-message BeaconBlockAltair {
-  // Beacon chain slot that this block represents.
-  uint64 slot = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Slot"];
-
-  // Validator index of the validator that proposed the block header.
-  uint64 proposer_index = 2 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.ValidatorIndex"];
-
-  // 32 byte root of the parent block.
-  bytes parent_root = 3 [(ethereum.eth.ext.ssz_size) = "32"];
-
-  // 32 byte root of the resulting state after processing this block.
-  bytes state_root = 4 [(ethereum.eth.ext.ssz_size) = "32"];
-
-  // The Altair beacon block body.
-  BeaconBlockBodyAltair body = 5;
-}
-
-// The block body of an Altair(HF1) beacon block.
-// The new addition for Altair is SyncAggregate for light client support.
-message BeaconBlockBodyAltair {
-  // The validators RANDAO reveal 96 byte value.
-  bytes randao_reveal = 1 [(ethereum.eth.ext.ssz_size) = "96"];
-
-  // A reference to the Ethereum 1.x chain.
-  Eth1Data eth1_data = 2;
-
-  // 32 byte field of arbitrary data. This field may contain any data and
-  // is not used for anything other than a fun message.
-  bytes graffiti = 3 [(ethereum.eth.ext.ssz_size) = "32"];
-
-  // Block operations
-  // Refer to spec constants at https://github.com/ethereum/eth2.0-specs/blob/dev/specs/core/0_beacon-chain.md#max-operations-per-block
-
-  // At most MAX_PROPOSER_SLASHINGS.
-  repeated ProposerSlashing proposer_slashings = 4 [(ethereum.eth.ext.ssz_max) = "16"];
-
-  // At most MAX_ATTESTER_SLASHINGS.
-  repeated AttesterSlashing attester_slashings = 5 [(ethereum.eth.ext.ssz_max) = "2"];
-
-  // At most MAX_ATTESTATIONS.
-  repeated Attestation attestations = 6 [(ethereum.eth.ext.ssz_max) = "128"];
-
-  // At most MAX_DEPOSITS.
-  repeated Deposit deposits = 7 [(ethereum.eth.ext.ssz_max) = "16"];
-
-  // At most MAX_VOLUNTARY_EXITS.
-  repeated SignedVoluntaryExit voluntary_exits = 8 [(ethereum.eth.ext.ssz_max) = "16"];
-
-  // Sync aggregate object to track sync committee votes for light client support. [New in Altair]
-  SyncAggregate sync_aggregate = 9;
-}
-
-// The sync aggregate object for the beacon chain to track sync committee votes and to
-// support light client infra.
-message SyncAggregate {
-  // Sync committee bits as Bitvector to track votes.
-  bytes sync_committee_bits = 1 [(ethereum.eth.ext.ssz_size) = "64", (ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/go-bitfield.Bitvector512"];
-
-  // BLS aggregated signature of the sync committee for the ones that voted.
-  bytes sync_committee_signature = 2 [(ethereum.eth.ext.ssz_size) = "96"];
-}
diff --git a/proto/eth/v1alpha1/generated.ssz.go b/proto/eth/v1alpha1/generated.ssz.go
old mode 100755
new mode 100644
diff --git a/proto/eth/v1alpha1/sync_committee.pb.go b/proto/eth/v1alpha1/sync_committee.pb.go
deleted file mode 100755
index c912c5a74d..0000000000
--- a/proto/eth/v1alpha1/sync_committee.pb.go
+++ /dev/null
@@ -1,481 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.25.0
-// 	protoc        v3.15.8
-// source: proto/eth/v1alpha1/sync_committee.proto
-
-package eth
-
-import (
-	reflect "reflect"
-	sync "sync"
-
-	proto "github.com/golang/protobuf/proto"
-	github_com_prysmaticlabs_eth2_types "github.com/prysmaticlabs/eth2-types"
-	_ "github.com/prysmaticlabs/prysm/proto/eth/ext"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
-type SyncCommitteeSignature struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Slot           github_com_prysmaticlabs_eth2_types.Slot           `protobuf:"varint,1,opt,name=slot,proto3" json:"slot,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.Slot"`
-	BlockRoot      []byte                                             `protobuf:"bytes,2,opt,name=block_root,json=blockRoot,proto3" json:"block_root,omitempty" ssz-size:"32"`
-	ValidatorIndex github_com_prysmaticlabs_eth2_types.ValidatorIndex `protobuf:"varint,3,opt,name=validator_index,json=validatorIndex,proto3" json:"validator_index,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.ValidatorIndex"`
-	Signature      []byte                                             `protobuf:"bytes,4,opt,name=signature,proto3" json:"signature,omitempty" ssz-size:"96"`
-}
-
-func (x *SyncCommitteeSignature) Reset() {
-	*x = SyncCommitteeSignature{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SyncCommitteeSignature) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SyncCommitteeSignature) ProtoMessage() {}
-
-func (x *SyncCommitteeSignature) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[0]
-	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 SyncCommitteeSignature.ProtoReflect.Descriptor instead.
-func (*SyncCommitteeSignature) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_sync_committee_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *SyncCommitteeSignature) GetSlot() github_com_prysmaticlabs_eth2_types.Slot {
-	if x != nil {
-		return x.Slot
-	}
-	return github_com_prysmaticlabs_eth2_types.Slot(0)
-}
-
-func (x *SyncCommitteeSignature) GetBlockRoot() []byte {
-	if x != nil {
-		return x.BlockRoot
-	}
-	return nil
-}
-
-func (x *SyncCommitteeSignature) GetValidatorIndex() github_com_prysmaticlabs_eth2_types.ValidatorIndex {
-	if x != nil {
-		return x.ValidatorIndex
-	}
-	return github_com_prysmaticlabs_eth2_types.ValidatorIndex(0)
-}
-
-func (x *SyncCommitteeSignature) GetSignature() []byte {
-	if x != nil {
-		return x.Signature
-	}
-	return nil
-}
-
-type SyncCommitteeContribution struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Slot              github_com_prysmaticlabs_eth2_types.Slot `protobuf:"varint,1,opt,name=slot,proto3" json:"slot,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.Slot"`
-	BlockRoot         []byte                                   `protobuf:"bytes,2,opt,name=block_root,json=blockRoot,proto3" json:"block_root,omitempty" ssz-size:"32"`
-	SubcommitteeIndex uint64                                   `protobuf:"varint,3,opt,name=subcommittee_index,json=subcommitteeIndex,proto3" json:"subcommittee_index,omitempty"`
-	AggregationBits   []byte                                   `protobuf:"bytes,4,opt,name=aggregation_bits,json=aggregationBits,proto3" json:"aggregation_bits,omitempty" ssz-size:"32"`
-	Signature         []byte                                   `protobuf:"bytes,5,opt,name=signature,proto3" json:"signature,omitempty" ssz-size:"96"`
-}
-
-func (x *SyncCommitteeContribution) Reset() {
-	*x = SyncCommitteeContribution{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SyncCommitteeContribution) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SyncCommitteeContribution) ProtoMessage() {}
-
-func (x *SyncCommitteeContribution) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[1]
-	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 SyncCommitteeContribution.ProtoReflect.Descriptor instead.
-func (*SyncCommitteeContribution) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_sync_committee_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *SyncCommitteeContribution) GetSlot() github_com_prysmaticlabs_eth2_types.Slot {
-	if x != nil {
-		return x.Slot
-	}
-	return github_com_prysmaticlabs_eth2_types.Slot(0)
-}
-
-func (x *SyncCommitteeContribution) GetBlockRoot() []byte {
-	if x != nil {
-		return x.BlockRoot
-	}
-	return nil
-}
-
-func (x *SyncCommitteeContribution) GetSubcommitteeIndex() uint64 {
-	if x != nil {
-		return x.SubcommitteeIndex
-	}
-	return 0
-}
-
-func (x *SyncCommitteeContribution) GetAggregationBits() []byte {
-	if x != nil {
-		return x.AggregationBits
-	}
-	return nil
-}
-
-func (x *SyncCommitteeContribution) GetSignature() []byte {
-	if x != nil {
-		return x.Signature
-	}
-	return nil
-}
-
-type ContributionAndProof struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	AggregatorIndex github_com_prysmaticlabs_eth2_types.ValidatorIndex `protobuf:"varint,1,opt,name=aggregator_index,json=aggregatorIndex,proto3" json:"aggregator_index,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.ValidatorIndex"`
-	Contribution    *SyncCommitteeContribution                         `protobuf:"bytes,2,opt,name=contribution,proto3" json:"contribution,omitempty"`
-	SelectionProof  []byte                                             `protobuf:"bytes,3,opt,name=selection_proof,json=selectionProof,proto3" json:"selection_proof,omitempty" ssz-size:"96"`
-}
-
-func (x *ContributionAndProof) Reset() {
-	*x = ContributionAndProof{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ContributionAndProof) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ContributionAndProof) ProtoMessage() {}
-
-func (x *ContributionAndProof) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[2]
-	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 ContributionAndProof.ProtoReflect.Descriptor instead.
-func (*ContributionAndProof) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_sync_committee_proto_rawDescGZIP(), []int{2}
-}
-
-func (x *ContributionAndProof) GetAggregatorIndex() github_com_prysmaticlabs_eth2_types.ValidatorIndex {
-	if x != nil {
-		return x.AggregatorIndex
-	}
-	return github_com_prysmaticlabs_eth2_types.ValidatorIndex(0)
-}
-
-func (x *ContributionAndProof) GetContribution() *SyncCommitteeContribution {
-	if x != nil {
-		return x.Contribution
-	}
-	return nil
-}
-
-func (x *ContributionAndProof) GetSelectionProof() []byte {
-	if x != nil {
-		return x.SelectionProof
-	}
-	return nil
-}
-
-type SignedContributionAndProof struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Message   *ContributionAndProof `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"`
-	Signature []byte                `protobuf:"bytes,4,opt,name=signature,proto3" json:"signature,omitempty" ssz-size:"96"`
-}
-
-func (x *SignedContributionAndProof) Reset() {
-	*x = SignedContributionAndProof{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SignedContributionAndProof) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SignedContributionAndProof) ProtoMessage() {}
-
-func (x *SignedContributionAndProof) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[3]
-	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 SignedContributionAndProof.ProtoReflect.Descriptor instead.
-func (*SignedContributionAndProof) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v1alpha1_sync_committee_proto_rawDescGZIP(), []int{3}
-}
-
-func (x *SignedContributionAndProof) GetMessage() *ContributionAndProof {
-	if x != nil {
-		return x.Message
-	}
-	return nil
-}
-
-func (x *SignedContributionAndProof) GetSignature() []byte {
-	if x != nil {
-		return x.Signature
-	}
-	return nil
-}
-
-var File_proto_eth_v1alpha1_sync_committee_proto protoreflect.FileDescriptor
-
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-}
-
-var (
-	file_proto_eth_v1alpha1_sync_committee_proto_rawDescOnce sync.Once
-	file_proto_eth_v1alpha1_sync_committee_proto_rawDescData = file_proto_eth_v1alpha1_sync_committee_proto_rawDesc
-)
-
-func file_proto_eth_v1alpha1_sync_committee_proto_rawDescGZIP() []byte {
-	file_proto_eth_v1alpha1_sync_committee_proto_rawDescOnce.Do(func() {
-		file_proto_eth_v1alpha1_sync_committee_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_eth_v1alpha1_sync_committee_proto_rawDescData)
-	})
-	return file_proto_eth_v1alpha1_sync_committee_proto_rawDescData
-}
-
-var file_proto_eth_v1alpha1_sync_committee_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
-var file_proto_eth_v1alpha1_sync_committee_proto_goTypes = []interface{}{
-	(*SyncCommitteeSignature)(nil),     // 0: ethereum.eth.v1alpha1.SyncCommitteeSignature
-	(*SyncCommitteeContribution)(nil),  // 1: ethereum.eth.v1alpha1.SyncCommitteeContribution
-	(*ContributionAndProof)(nil),       // 2: ethereum.eth.v1alpha1.ContributionAndProof
-	(*SignedContributionAndProof)(nil), // 3: ethereum.eth.v1alpha1.SignedContributionAndProof
-}
-var file_proto_eth_v1alpha1_sync_committee_proto_depIdxs = []int32{
-	1, // 0: ethereum.eth.v1alpha1.ContributionAndProof.contribution:type_name -> ethereum.eth.v1alpha1.SyncCommitteeContribution
-	2, // 1: ethereum.eth.v1alpha1.SignedContributionAndProof.message:type_name -> ethereum.eth.v1alpha1.ContributionAndProof
-	2, // [2:2] is the sub-list for method output_type
-	2, // [2:2] is the sub-list for method input_type
-	2, // [2:2] is the sub-list for extension type_name
-	2, // [2:2] is the sub-list for extension extendee
-	0, // [0:2] is the sub-list for field type_name
-}
-
-func init() { file_proto_eth_v1alpha1_sync_committee_proto_init() }
-func file_proto_eth_v1alpha1_sync_committee_proto_init() {
-	if File_proto_eth_v1alpha1_sync_committee_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SyncCommitteeSignature); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SyncCommitteeContribution); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ContributionAndProof); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v1alpha1_sync_committee_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SignedContributionAndProof); 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{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_proto_eth_v1alpha1_sync_committee_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   4,
-			NumExtensions: 0,
-			NumServices:   0,
-		},
-		GoTypes:           file_proto_eth_v1alpha1_sync_committee_proto_goTypes,
-		DependencyIndexes: file_proto_eth_v1alpha1_sync_committee_proto_depIdxs,
-		MessageInfos:      file_proto_eth_v1alpha1_sync_committee_proto_msgTypes,
-	}.Build()
-	File_proto_eth_v1alpha1_sync_committee_proto = out.File
-	file_proto_eth_v1alpha1_sync_committee_proto_rawDesc = nil
-	file_proto_eth_v1alpha1_sync_committee_proto_goTypes = nil
-	file_proto_eth_v1alpha1_sync_committee_proto_depIdxs = nil
-}
diff --git a/proto/eth/v1alpha1/sync_committee.pb.gw.go b/proto/eth/v1alpha1/sync_committee.pb.gw.go
deleted file mode 100755
index 33d2475db2..0000000000
--- a/proto/eth/v1alpha1/sync_committee.pb.gw.go
+++ /dev/null
@@ -1,3 +0,0 @@
-// +build ignore
-
-package ignore
diff --git a/proto/eth/v1alpha1/sync_committee.proto b/proto/eth/v1alpha1/sync_committee.proto
deleted file mode 100644
index f683d22071..0000000000
--- a/proto/eth/v1alpha1/sync_committee.proto
+++ /dev/null
@@ -1,78 +0,0 @@
-// Copyright 2021 Prysmatic Labs.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-syntax = "proto3";
-
-package ethereum.eth.v1alpha1;
-
-import "proto/eth/ext/options.proto";
-
-option csharp_namespace = "Ethereum.Eth.v1alpha1";
-option go_package = "github.com/prysmaticlabs/prysm/proto/eth/v1alpha1;eth";
-option java_multiple_files = true;
-option java_outer_classname = "SyncCommitteeProto";
-option java_package = "org.ethereum.eth.v1alpha1";
-option php_namespace = "Ethereum\\Eth\\v1alpha1";
-
-// Sync committee object to support light client.
-message SyncCommitteeSignature {
-  // Slot to which this contribution pertains.
-  uint64 slot = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Slot"];
-
-  // 32 byte block root for this signature.
-  bytes block_root = 2 [(ethereum.eth.ext.ssz_size) = "32"];
-
-  // Index of the validator that produced this signature.
-  uint64 validator_index = 3 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.ValidatorIndex"];
-
-  // Signature by the validator over the block root of `slot`.
-  bytes signature = 4 [(ethereum.eth.ext.ssz_size) = "96"];
-}
-
-// Aggregated sync committee object to support light client.
-message SyncCommitteeContribution {
-  // Slot to which this contribution pertains.
-  uint64 slot = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Slot"];
-
-  // 32 byte block root for this signature.
-  bytes block_root = 2 [(ethereum.eth.ext.ssz_size) = "32"];
-
-  // The subcommittee this contribution pertains to out of the broader sync committee.
-  uint64 subcommittee_index = 3;
-
-  // A bit is set if a signature from the validator at the corresponding
-  // index in the subcommittee is present in the aggregate `signature`.
-  bytes aggregation_bits = 4  [(ethereum.eth.ext.ssz_size) = "32"];
-
-  // Signature by the validator(s) over the block root of `slot`.
-  bytes signature = 5 [(ethereum.eth.ext.ssz_size) = "96"];
-}
-
-// Aggregated sync committee signature object with selection proof to support light client.
-message ContributionAndProof {
-  // Index of the aggregator that produced this proof.
-  uint64 aggregator_index = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.ValidatorIndex"];
-
-  SyncCommitteeContribution contribution = 2;
-
-  // The selection proof itself.
-  bytes selection_proof = 3 [(ethereum.eth.ext.ssz_size) = "96"];
-}
-
-// Signed aggregated sync committee signature object with selection proof to support light client.
-message SignedContributionAndProof {
-  ContributionAndProof message = 1;
-
-  // Signature of the aggregator that produced `message`.
-  bytes signature = 4 [(ethereum.eth.ext.ssz_size) = "96"];
-}