diff --git a/api/v1/payloadattributesevent.go b/api/v1/payloadattributesevent.go
index 3a6379b..96daac2 100644
--- a/api/v1/payloadattributesevent.go
+++ b/api/v1/payloadattributesevent.go
@@ -462,7 +462,7 @@ func (e *PayloadAttributesEvent) MarshalJSON() ([]byte, error) {
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to marshal payload attributes v3")
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if e.Data.V4 == nil {
 			return nil, errors.New("no payload attributes v4 data")
 		}
@@ -592,7 +592,7 @@ func (e *PayloadAttributesEvent) unpack(data *payloadAttributesEventJSON) error
 			return err
 		}
 		e.Data.V3 = &payloadAttributes
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		var payloadAttributes PayloadAttributesV4
 		err = json.Unmarshal(data.Data.PayloadAttributes, &payloadAttributes)
 		if err != nil {
diff --git a/api/versionedblindedbeaconblock.go b/api/versionedblindedbeaconblock.go
index 88ec55e..588612e 100644
--- a/api/versionedblindedbeaconblock.go
+++ b/api/versionedblindedbeaconblock.go
@@ -58,7 +58,7 @@ func (v *VersionedBlindedBeaconBlock) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Slot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return 0, ErrDataMissing
 		}
@@ -90,7 +90,7 @@ func (v *VersionedBlindedBeaconBlock) ProposerIndex() (phase0.ValidatorIndex, er
 		}
 
 		return v.Deneb.ProposerIndex, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return 0, ErrDataMissing
 		}
@@ -125,7 +125,7 @@ func (v *VersionedBlindedBeaconBlock) RandaoReveal() (phase0.BLSSignature, error
 		}
 
 		return v.Deneb.Body.RANDAOReveal, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil {
 			return phase0.BLSSignature{}, ErrDataMissing
@@ -161,7 +161,7 @@ func (v *VersionedBlindedBeaconBlock) Graffiti() ([32]byte, error) {
 		}
 
 		return v.Deneb.Body.Graffiti, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil {
 			return [32]byte{}, ErrDataMissing
@@ -218,7 +218,7 @@ func (v *VersionedBlindedBeaconBlock) Attestations() ([]spec.VersionedAttestatio
 		}
 
 		return versionedAttestations, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil || v.Electra.Body == nil {
 			return nil, ErrDataMissing
 		}
@@ -258,7 +258,7 @@ func (v *VersionedBlindedBeaconBlock) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -290,7 +290,7 @@ func (v *VersionedBlindedBeaconBlock) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Body.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -322,7 +322,7 @@ func (v *VersionedBlindedBeaconBlock) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.ParentRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -354,7 +354,7 @@ func (v *VersionedBlindedBeaconBlock) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.StateRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -392,7 +392,7 @@ func (v *VersionedBlindedBeaconBlock) TransactionsRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Body.ExecutionPayloadHeader.TransactionsRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil ||
 			v.Electra.Body.ExecutionPayloadHeader == nil {
@@ -432,7 +432,7 @@ func (v *VersionedBlindedBeaconBlock) FeeRecipient() (bellatrix.ExecutionAddress
 		}
 
 		return v.Deneb.Body.ExecutionPayloadHeader.FeeRecipient, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil ||
 			v.Electra.Body.ExecutionPayloadHeader == nil {
@@ -472,7 +472,7 @@ func (v *VersionedBlindedBeaconBlock) Timestamp() (uint64, error) {
 		}
 
 		return v.Deneb.Body.ExecutionPayloadHeader.Timestamp, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil ||
 			v.Electra.Body.ExecutionPayloadHeader == nil {
@@ -506,7 +506,7 @@ func (v *VersionedBlindedBeaconBlock) String() string {
 		}
 
 		return v.Deneb.String()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/api/versionedblindedproposal.go b/api/versionedblindedproposal.go
index 0f84b09..65ea248 100644
--- a/api/versionedblindedproposal.go
+++ b/api/versionedblindedproposal.go
@@ -58,7 +58,7 @@ func (v *VersionedBlindedProposal) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Slot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return 0, ErrDataMissing
 		}
@@ -90,7 +90,7 @@ func (v *VersionedBlindedProposal) ProposerIndex() (phase0.ValidatorIndex, error
 		}
 
 		return v.Deneb.ProposerIndex, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return 0, ErrDataMissing
 		}
@@ -125,7 +125,7 @@ func (v *VersionedBlindedProposal) RandaoReveal() (phase0.BLSSignature, error) {
 		}
 
 		return v.Deneb.Body.RANDAOReveal, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil {
 			return phase0.BLSSignature{}, ErrDataMissing
@@ -161,7 +161,7 @@ func (v *VersionedBlindedProposal) Graffiti() ([32]byte, error) {
 		}
 
 		return v.Deneb.Body.Graffiti, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil {
 			return [32]byte{}, ErrDataMissing
@@ -218,7 +218,7 @@ func (v *VersionedBlindedProposal) Attestations() ([]spec.VersionedAttestation,
 		}
 
 		return versionedAttestations, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil || v.Electra.Body == nil {
 			return nil, ErrDataMissing
 		}
@@ -258,7 +258,7 @@ func (v *VersionedBlindedProposal) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -293,7 +293,7 @@ func (v *VersionedBlindedProposal) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Body.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil {
 			return phase0.Root{}, ErrDataMissing
@@ -326,7 +326,7 @@ func (v *VersionedBlindedProposal) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.ParentRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -358,7 +358,7 @@ func (v *VersionedBlindedProposal) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.StateRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -396,7 +396,7 @@ func (v *VersionedBlindedProposal) TransactionsRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Body.ExecutionPayloadHeader.TransactionsRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil ||
 			v.Electra.Body.ExecutionPayloadHeader == nil {
@@ -436,7 +436,7 @@ func (v *VersionedBlindedProposal) FeeRecipient() (bellatrix.ExecutionAddress, e
 		}
 
 		return v.Deneb.Body.ExecutionPayloadHeader.FeeRecipient, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil ||
 			v.Electra.Body.ExecutionPayloadHeader == nil {
@@ -476,7 +476,7 @@ func (v *VersionedBlindedProposal) Timestamp() (uint64, error) {
 		}
 
 		return v.Deneb.Body.ExecutionPayloadHeader.Timestamp, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Body == nil ||
 			v.Electra.Body.ExecutionPayloadHeader == nil {
@@ -510,7 +510,7 @@ func (v *VersionedBlindedProposal) String() string {
 		}
 
 		return v.Deneb.String()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/api/versionedblockrequest.go b/api/versionedblockrequest.go
index 5783b67..88f4d46 100644
--- a/api/versionedblockrequest.go
+++ b/api/versionedblockrequest.go
@@ -55,7 +55,7 @@ func (v *VersionedBlockRequest) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Message.Slot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return 0, ErrDataMissing
@@ -97,7 +97,7 @@ func (v *VersionedBlockRequest) ExecutionBlockHash() (phase0.Hash32, error) {
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayload.BlockHash, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -162,7 +162,7 @@ func (v *VersionedBlockRequest) Attestations() ([]spec.VersionedAttestation, err
 		}
 
 		return versionedAttestations, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -207,7 +207,7 @@ func (v *VersionedBlockRequest) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return phase0.Root{}, ErrDataMissing
@@ -246,7 +246,7 @@ func (v *VersionedBlockRequest) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.Body.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -283,7 +283,7 @@ func (v *VersionedBlockRequest) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.ParentRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return phase0.Root{}, ErrDataMissing
@@ -319,7 +319,7 @@ func (v *VersionedBlockRequest) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.StateRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return phase0.Root{}, ErrDataMissing
@@ -382,7 +382,7 @@ func (v *VersionedBlockRequest) AttesterSlashings() ([]spec.VersionedAttesterSla
 		}
 
 		return versionedAttesterSlashings, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -430,7 +430,7 @@ func (v *VersionedBlockRequest) ProposerSlashings() ([]*phase0.ProposerSlashing,
 		}
 
 		return v.Deneb.Message.Body.ProposerSlashings, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -464,7 +464,7 @@ func (v *VersionedBlockRequest) String() string {
 		}
 
 		return v.Deneb.String()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/api/versionedproposal.go b/api/versionedproposal.go
index 49f27da..668ee8a 100644
--- a/api/versionedproposal.go
+++ b/api/versionedproposal.go
@@ -90,7 +90,7 @@ func (v *VersionedProposal) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Block.Body.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Body.HashTreeRoot()
 		}
@@ -130,7 +130,7 @@ func (v *VersionedProposal) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Block.ParentRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.ParentRoot, nil
 		}
@@ -170,7 +170,7 @@ func (v *VersionedProposal) ProposerIndex() (phase0.ValidatorIndex, error) {
 		}
 
 		return v.Deneb.Block.ProposerIndex, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.ProposerIndex, nil
 		}
@@ -210,7 +210,7 @@ func (v *VersionedProposal) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Block.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.HashTreeRoot()
 		}
@@ -250,7 +250,7 @@ func (v *VersionedProposal) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Block.Slot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Slot, nil
 		}
@@ -290,7 +290,7 @@ func (v *VersionedProposal) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Block.StateRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.StateRoot, nil
 		}
@@ -394,7 +394,7 @@ func (v *VersionedProposal) Attestations() ([]spec.VersionedAttestation, error)
 		}
 
 		return versionedAttestations, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			versionedAttestations := make([]spec.VersionedAttestation, len(v.ElectraBlinded.Body.Attestations))
 			for i, attestation := range v.ElectraBlinded.Body.Attestations {
@@ -450,7 +450,7 @@ func (v *VersionedProposal) Graffiti() ([32]byte, error) {
 		}
 
 		return v.Deneb.Block.Body.Graffiti, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Body.Graffiti, nil
 		}
@@ -490,7 +490,7 @@ func (v *VersionedProposal) RandaoReveal() (phase0.BLSSignature, error) {
 		}
 
 		return v.Deneb.Block.Body.RANDAOReveal, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Body.RANDAOReveal, nil
 		}
@@ -526,7 +526,7 @@ func (v *VersionedProposal) Transactions() ([]bellatrix.Transaction, error) {
 		}
 
 		return v.Deneb.Block.Body.ExecutionPayload.Transactions, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return nil, ErrDataMissing
 		}
@@ -562,7 +562,7 @@ func (v *VersionedProposal) FeeRecipient() (bellatrix.ExecutionAddress, error) {
 		}
 
 		return v.Deneb.Block.Body.ExecutionPayload.FeeRecipient, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Body.ExecutionPayloadHeader.FeeRecipient, nil
 		}
@@ -598,7 +598,7 @@ func (v *VersionedProposal) Timestamp() (uint64, error) {
 		}
 
 		return v.Deneb.Block.Body.ExecutionPayload.Timestamp, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Body.ExecutionPayloadHeader.Timestamp, nil
 		}
@@ -622,7 +622,7 @@ func (v *VersionedProposal) Blobs() ([]deneb.Blob, error) {
 		}
 
 		return v.Deneb.Blobs, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return nil, ErrDataMissing
 		}
@@ -646,7 +646,7 @@ func (v *VersionedProposal) KZGProofs() ([]deneb.KZGProof, error) {
 		}
 
 		return v.Deneb.KZGProofs, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return nil, ErrDataMissing
 		}
@@ -703,7 +703,7 @@ func (v *VersionedProposal) String() string {
 		}
 
 		return v.Deneb.String()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
@@ -738,7 +738,7 @@ func (v *VersionedProposal) proposalPresent() bool {
 		}
 
 		return v.Deneb.Block != nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded != nil
 		}
@@ -773,7 +773,7 @@ func (v *VersionedProposal) bodyPresent() bool {
 		}
 
 		return v.Deneb != nil && v.Deneb.Block != nil && v.Deneb.Block.Body != nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded != nil && v.ElectraBlinded.Body != nil
 		}
@@ -810,7 +810,7 @@ func (v *VersionedProposal) payloadPresent() bool {
 		}
 
 		return v.Deneb != nil && v.Deneb.Block != nil && v.Deneb.Block.Body != nil && v.Deneb.Block.Body.ExecutionPayload != nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded != nil && v.ElectraBlinded.Body != nil && v.ElectraBlinded.Body.ExecutionPayloadHeader != nil
 		}
diff --git a/api/versionedsignedblindedbeaconblock.go b/api/versionedsignedblindedbeaconblock.go
index 7c8888d..58d141b 100644
--- a/api/versionedsignedblindedbeaconblock.go
+++ b/api/versionedsignedblindedbeaconblock.go
@@ -55,7 +55,7 @@ func (v *VersionedSignedBlindedBeaconBlock) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Message.Slot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return 0, ErrDataMissing
@@ -118,7 +118,7 @@ func (v *VersionedSignedBlindedBeaconBlock) Attestations() ([]spec.VersionedAtte
 		}
 
 		return versionedAttestations, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -163,7 +163,7 @@ func (v *VersionedSignedBlindedBeaconBlock) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -201,7 +201,7 @@ func (v *VersionedSignedBlindedBeaconBlock) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.Body.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -236,7 +236,7 @@ func (v *VersionedSignedBlindedBeaconBlock) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.ParentRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -271,7 +271,7 @@ func (v *VersionedSignedBlindedBeaconBlock) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.StateRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -333,7 +333,7 @@ func (v *VersionedSignedBlindedBeaconBlock) AttesterSlashings() ([]spec.Versione
 		}
 
 		return versionedAttesterSlashings, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return nil, ErrDataMissing
 		}
@@ -379,7 +379,7 @@ func (v *VersionedSignedBlindedBeaconBlock) ProposerSlashings() ([]*phase0.Propo
 		}
 
 		return v.Deneb.Message.Body.ProposerSlashings, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return nil, ErrDataMissing
 		}
@@ -414,7 +414,7 @@ func (v *VersionedSignedBlindedBeaconBlock) ProposerIndex() (phase0.ValidatorInd
 		}
 
 		return v.Deneb.Message.ProposerIndex, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return 0, ErrDataMissing
@@ -456,7 +456,7 @@ func (v *VersionedSignedBlindedBeaconBlock) ExecutionBlockHash() (phase0.Hash32,
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayloadHeader.BlockHash, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -500,7 +500,7 @@ func (v *VersionedSignedBlindedBeaconBlock) ExecutionBlockNumber() (uint64, erro
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayloadHeader.BlockNumber, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -535,7 +535,7 @@ func (v *VersionedSignedBlindedBeaconBlock) Signature() (phase0.BLSSignature, er
 		}
 
 		return v.Deneb.Signature, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.BLSSignature{}, ErrDataMissing
 		}
diff --git a/api/versionedsignedblindedproposal.go b/api/versionedsignedblindedproposal.go
index abd0e23..6bc9465 100644
--- a/api/versionedsignedblindedproposal.go
+++ b/api/versionedsignedblindedproposal.go
@@ -55,7 +55,7 @@ func (v *VersionedSignedBlindedProposal) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Message.Slot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return 0, ErrDataMissing
@@ -118,7 +118,7 @@ func (v *VersionedSignedBlindedProposal) Attestations() ([]spec.VersionedAttesta
 		}
 
 		return versionedAttestations, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -163,7 +163,7 @@ func (v *VersionedSignedBlindedProposal) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, ErrDataMissing
 		}
@@ -201,7 +201,7 @@ func (v *VersionedSignedBlindedProposal) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.Body.HashTreeRoot()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -238,7 +238,7 @@ func (v *VersionedSignedBlindedProposal) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.ParentRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return phase0.Root{}, ErrDataMissing
@@ -274,7 +274,7 @@ func (v *VersionedSignedBlindedProposal) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.StateRoot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return phase0.Root{}, ErrDataMissing
@@ -337,7 +337,7 @@ func (v *VersionedSignedBlindedProposal) AttesterSlashings() ([]spec.VersionedAt
 		}
 
 		return versionedAttesterSlashings, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -385,7 +385,7 @@ func (v *VersionedSignedBlindedProposal) ProposerSlashings() ([]*phase0.Proposer
 		}
 
 		return v.Deneb.Message.Body.ProposerSlashings, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -422,7 +422,7 @@ func (v *VersionedSignedBlindedProposal) ProposerIndex() (phase0.ValidatorIndex,
 		}
 
 		return v.Deneb.Message.ProposerIndex, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil {
 			return 0, ErrDataMissing
@@ -464,7 +464,7 @@ func (v *VersionedSignedBlindedProposal) ExecutionBlockHash() (phase0.Hash32, er
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayloadHeader.BlockHash, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -508,7 +508,7 @@ func (v *VersionedSignedBlindedProposal) ExecutionBlockNumber() (uint64, error)
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayloadHeader.BlockNumber, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -543,7 +543,7 @@ func (v *VersionedSignedBlindedProposal) Signature() (phase0.BLSSignature, error
 		}
 
 		return v.Deneb.Signature, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.BLSSignature{}, ErrDataMissing
 		}
diff --git a/api/versionedsignedproposal.go b/api/versionedsignedproposal.go
index c73f3fd..29985bc 100644
--- a/api/versionedsignedproposal.go
+++ b/api/versionedsignedproposal.go
@@ -80,7 +80,7 @@ func (v *VersionedSignedProposal) AssertPresent() error {
 		if v.DenebBlinded == nil && v.Blinded {
 			return errors.New("blinded deneb proposal not present")
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Electra == nil && !v.Blinded {
 			return errors.New("electra proposal not present")
 		}
@@ -123,7 +123,7 @@ func (v *VersionedSignedProposal) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.SignedBlock.Message.Slot, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Message.Slot, nil
 		}
@@ -163,7 +163,7 @@ func (v *VersionedSignedProposal) ProposerIndex() (phase0.ValidatorIndex, error)
 		}
 
 		return v.Deneb.SignedBlock.Message.ProposerIndex, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Message.ProposerIndex, nil
 		}
@@ -199,7 +199,7 @@ func (v *VersionedSignedProposal) ExecutionBlockHash() (phase0.Hash32, error) {
 		}
 
 		return v.Deneb.SignedBlock.Message.Body.ExecutionPayload.BlockHash, nil
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			return v.ElectraBlinded.Message.Body.ExecutionPayloadHeader.BlockHash, nil
 		}
@@ -267,7 +267,7 @@ func (v *VersionedSignedProposal) String() string {
 		}
 
 		return v.Deneb.String()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			if v.ElectraBlinded == nil {
 				return ""
@@ -327,7 +327,7 @@ func (v *VersionedSignedProposal) assertMessagePresent() error {
 				return ErrDataMissing
 			}
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			if v.ElectraBlinded == nil ||
 				v.ElectraBlinded.Message == nil {
@@ -402,7 +402,7 @@ func (v *VersionedSignedProposal) assertExecutionPayloadPresent() error {
 				return ErrDataMissing
 			}
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if v.Blinded {
 			if v.ElectraBlinded == nil ||
 				v.ElectraBlinded.Message == nil ||
diff --git a/http/beaconstate.go b/http/beaconstate.go
index e7983d1..1a32f2f 100644
--- a/http/beaconstate.go
+++ b/http/beaconstate.go
@@ -135,7 +135,7 @@ func (s *Service) beaconStateFromSSZ(ctx context.Context, res *httpResponse) (*a
 		if err != nil {
 			return nil, errors.Join(errors.New("failed to decode deneb beacon state"), err)
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		response.Data.Electra = &electra.BeaconState{}
 		if s.customSpecSupport {
 			err = dynSSZ.UnmarshalSSZ(response.Data.Electra, res.body)
@@ -171,7 +171,7 @@ func (*Service) beaconStateFromJSON(res *httpResponse) (*api.Response[*spec.Vers
 		response.Data.Capella, response.Metadata, err = decodeJSONResponse(bytes.NewReader(res.body), &capella.BeaconState{})
 	case spec.DataVersionDeneb:
 		response.Data.Deneb, response.Metadata, err = decodeJSONResponse(bytes.NewReader(res.body), &deneb.BeaconState{})
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		response.Data.Electra, response.Metadata, err = decodeJSONResponse(bytes.NewReader(res.body), &electra.BeaconState{})
 	default:
 		err = fmt.Errorf("unsupported version %s", res.consensusVersion)
diff --git a/http/blindedproposal.go b/http/blindedproposal.go
index e790029..f115522 100644
--- a/http/blindedproposal.go
+++ b/http/blindedproposal.go
@@ -141,7 +141,7 @@ func (*Service) blindedProposalFromSSZ(res *httpResponse) (*api.Response[*api.Ve
 		if err := response.Data.Deneb.UnmarshalSSZ(res.body); err != nil {
 			return nil, errors.Join(errors.New("failed to decode deneb blinded beacon block proposal"), err)
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		response.Data.Electra = &apiv1electra.BlindedBeaconBlock{}
 		if err := response.Data.Electra.UnmarshalSSZ(res.body); err != nil {
 			return nil, errors.Join(errors.New("failed to decode electra blinded beacon block proposal"), err)
@@ -177,7 +177,7 @@ func (*Service) blindedProposalFromJSON(res *httpResponse) (*api.Response[*api.V
 			bytes.NewReader(res.body),
 			&apiv1deneb.BlindedBeaconBlock{},
 		)
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		response.Data.Electra, response.Metadata, err = decodeJSONResponse(
 			bytes.NewReader(res.body),
 			&apiv1electra.BlindedBeaconBlock{},
diff --git a/http/proposal.go b/http/proposal.go
index bbdcfd1..e5f8f5a 100644
--- a/http/proposal.go
+++ b/http/proposal.go
@@ -218,7 +218,7 @@ func (s *Service) beaconBlockProposalFromSSZ(ctx context.Context,
 				err = response.Data.Deneb.UnmarshalSSZ(res.body)
 			}
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if response.Data.Blinded {
 			response.Data.ElectraBlinded = &apiv1electra.BlindedBeaconBlock{}
 			if s.customSpecSupport {
@@ -309,7 +309,7 @@ func (s *Service) beaconBlockProposalFromJSON(res *httpResponse) (*api.Response[
 				&apiv1deneb.BlockContents{},
 			)
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		if response.Data.Blinded {
 			response.Data.ElectraBlinded, response.Metadata, err = decodeJSONResponse(
 				bytes.NewReader(res.body),
diff --git a/http/signedbeaconblock.go b/http/signedbeaconblock.go
index d41dfbb..65c1934 100644
--- a/http/signedbeaconblock.go
+++ b/http/signedbeaconblock.go
@@ -143,7 +143,7 @@ func (s *Service) signedBeaconBlockFromSSZ(ctx context.Context,
 		if err != nil {
 			return nil, errors.Join(errors.New("failed to decode deneb signed block contents"), err)
 		}
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		response.Data.Electra = &electra.SignedBeaconBlock{}
 		if s.customSpecSupport {
 			err = dynSSZ.UnmarshalSSZ(response.Data.Electra, res.body)
@@ -189,7 +189,7 @@ func (*Service) signedBeaconBlockFromJSON(res *httpResponse) (*api.Response[*spe
 		response.Data.Deneb, response.Metadata, err = decodeJSONResponse(bytes.NewReader(res.body),
 			&deneb.SignedBeaconBlock{},
 		)
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		response.Data.Electra, response.Metadata, err = decodeJSONResponse(bytes.NewReader(res.body),
 			&electra.SignedBeaconBlock{},
 		)
diff --git a/http/submitbeaconblock.go b/http/submitbeaconblock.go
index 39d5d7a..57cf532 100644
--- a/http/submitbeaconblock.go
+++ b/http/submitbeaconblock.go
@@ -49,7 +49,7 @@ func (s *Service) SubmitBeaconBlock(ctx context.Context, block *spec.VersionedSi
 		specJSON, err = json.Marshal(block.Capella)
 	case spec.DataVersionDeneb:
 		specJSON, err = json.Marshal(block.Deneb)
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		specJSON, err = json.Marshal(block.Electra)
 	default:
 		err = errors.New("unknown block version")
diff --git a/http/submitblindedbeaconblock.go b/http/submitblindedbeaconblock.go
index 64945fd..9002ce8 100644
--- a/http/submitblindedbeaconblock.go
+++ b/http/submitblindedbeaconblock.go
@@ -50,7 +50,7 @@ func (s *Service) SubmitBlindedBeaconBlock(ctx context.Context, block *api.Versi
 		specJSON, err = json.Marshal(block.Capella)
 	case spec.DataVersionDeneb:
 		specJSON, err = json.Marshal(block.Deneb)
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		specJSON, err = json.Marshal(block.Electra)
 	default:
 		err = errors.New("unknown block version")
diff --git a/http/submitblindedproposal.go b/http/submitblindedproposal.go
index ef49a05..0291a8e 100644
--- a/http/submitblindedproposal.go
+++ b/http/submitblindedproposal.go
@@ -53,7 +53,7 @@ func (s *Service) SubmitBlindedProposal(ctx context.Context,
 		specJSON, err = json.Marshal(opts.Proposal.Capella)
 	case spec.DataVersionDeneb:
 		specJSON, err = json.Marshal(opts.Proposal.Deneb)
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		specJSON, err = json.Marshal(opts.Proposal.Electra)
 	default:
 		err = errors.New("unknown proposal version")
diff --git a/http/submitproposal.go b/http/submitproposal.go
index a63e1cf..1dd25b9 100644
--- a/http/submitproposal.go
+++ b/http/submitproposal.go
@@ -110,7 +110,7 @@ func (*Service) submitProposalJSON(_ context.Context,
 		specJSON, err = json.Marshal(proposal.Capella)
 	case spec.DataVersionDeneb:
 		specJSON, err = json.Marshal(proposal.Deneb)
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		specJSON, err = json.Marshal(proposal.Electra)
 	default:
 		err = errors.New("unknown proposal version")
@@ -146,7 +146,7 @@ func (*Service) submitProposalSSZ(_ context.Context,
 		specSSZ, err = proposal.Capella.MarshalSSZ()
 	case spec.DataVersionDeneb:
 		specSSZ, err = proposal.Deneb.MarshalSSZ()
-	case spec.DataVersionAlpaca:
+	case spec.DataVersionAlpaca, spec.DataVersionBadger:
 		specSSZ, err = proposal.Electra.MarshalSSZ()
 	default:
 		err = errors.New("unknown proposal version")
diff --git a/spec/dataversion.go b/spec/dataversion.go
index 4773aef..e50f3d3 100644
--- a/spec/dataversion.go
+++ b/spec/dataversion.go
@@ -36,6 +36,8 @@ const (
 	DataVersionDeneb
 	// DataVersionAlpaca is data applicable for the Electra release of the beacon chain.
 	DataVersionAlpaca
+	// DataVersionBadger is data applicable for the Badger release of the beacon chain.
+	DataVersionBadger
 )
 
 var dataVersionStrings = [...]string{
@@ -46,6 +48,7 @@ var dataVersionStrings = [...]string{
 	"capella",
 	"deneb",
 	"alpaca",
+	"badger",
 }
 
 // MarshalJSON implements json.Marshaler.
@@ -69,6 +72,8 @@ func (d *DataVersion) UnmarshalJSON(input []byte) error {
 		*d = DataVersionDeneb
 	case `"alpaca"`:
 		*d = DataVersionAlpaca
+	case `"badger"`:
+		*d = DataVersionBadger
 	default:
 		err = fmt.Errorf("unrecognised data version %s", string(input))
 	}
diff --git a/spec/versionedattestation.go b/spec/versionedattestation.go
index f0e9a42..e4981f0 100644
--- a/spec/versionedattestation.go
+++ b/spec/versionedattestation.go
@@ -71,7 +71,7 @@ func (v *VersionedAttestation) AggregationBits() (bitfield.Bitlist, error) {
 		}
 
 		return v.Deneb.AggregationBits, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra attestation")
 		}
@@ -115,7 +115,7 @@ func (v *VersionedAttestation) Data() (*phase0.AttestationData, error) {
 		}
 
 		return v.Deneb.Data, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra attestation")
 		}
@@ -131,7 +131,7 @@ func (v *VersionedAttestation) CommitteeBits() (bitfield.Bitvector64, error) {
 	switch v.Version {
 	case DataVersionPhase0, DataVersionAltair, DataVersionBellatrix, DataVersionCapella, DataVersionDeneb:
 		return nil, errors.New("attestation does not provide committee bits")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra attestation")
 		}
@@ -175,7 +175,7 @@ func (v *VersionedAttestation) Signature() (phase0.BLSSignature, error) {
 		}
 
 		return v.Deneb.Signature, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.BLSSignature{}, errors.New("no Electra attestation")
 		}
@@ -219,7 +219,7 @@ func (v *VersionedAttestation) String() string {
 		}
 
 		return v.Deneb.String()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/spec/versionedattesterslashing.go b/spec/versionedattesterslashing.go
index b935db3..1957d8d 100644
--- a/spec/versionedattesterslashing.go
+++ b/spec/versionedattesterslashing.go
@@ -94,7 +94,7 @@ func (v *VersionedAttesterSlashing) Attestation1() (*VersionedIndexedAttestation
 		}
 
 		return &versionedIndexedAttestation, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra indexed attestation")
 		}
@@ -168,7 +168,7 @@ func (v *VersionedAttesterSlashing) Attestation2() (*VersionedIndexedAttestation
 		}
 
 		return &versionedIndexedAttestation, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra indexed attestation")
 		}
@@ -217,7 +217,7 @@ func (v *VersionedAttesterSlashing) String() string {
 		}
 
 		return v.Deneb.String()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/spec/versionedbeaconblock.go b/spec/versionedbeaconblock.go
index 7a32b2c..930c1c1 100644
--- a/spec/versionedbeaconblock.go
+++ b/spec/versionedbeaconblock.go
@@ -74,7 +74,7 @@ func (v *VersionedBeaconBlock) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Slot, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no electra block")
 		}
@@ -133,7 +133,7 @@ func (v *VersionedBeaconBlock) RandaoReveal() (phase0.BLSSignature, error) {
 		}
 
 		return v.Deneb.Body.RANDAOReveal, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.BLSSignature{}, errors.New("no electra block")
 		}
@@ -195,7 +195,7 @@ func (v *VersionedBeaconBlock) Graffiti() ([32]byte, error) {
 		}
 
 		return v.Deneb.Body.Graffiti, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return [32]byte{}, errors.New("no electra block")
 		}
@@ -242,7 +242,7 @@ func (v *VersionedBeaconBlock) ProposerIndex() (phase0.ValidatorIndex, error) {
 		}
 
 		return v.Deneb.ProposerIndex, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no electra block")
 		}
@@ -286,7 +286,7 @@ func (v *VersionedBeaconBlock) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.HashTreeRoot()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -345,7 +345,7 @@ func (v *VersionedBeaconBlock) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Body.HashTreeRoot()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -392,7 +392,7 @@ func (v *VersionedBeaconBlock) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.ParentRoot, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -436,7 +436,7 @@ func (v *VersionedBeaconBlock) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.StateRoot, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -520,7 +520,7 @@ func (v *VersionedBeaconBlock) Attestations() ([]VersionedAttestation, error) {
 		}
 
 		return versionedAttestations, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -612,7 +612,7 @@ func (v *VersionedBeaconBlock) AttesterSlashings() ([]VersionedAttesterSlashing,
 		}
 
 		return versionedAttesterSlashings, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -664,7 +664,7 @@ func (v *VersionedBeaconBlock) ProposerSlashings() ([]*phase0.ProposerSlashing,
 		}
 
 		return v.Deneb.Body.ProposerSlashings, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -708,7 +708,7 @@ func (v *VersionedBeaconBlock) String() string {
 		}
 
 		return v.Deneb.String()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/spec/versionedbeaconblockbody.go b/spec/versionedbeaconblockbody.go
index 870a183..e888719 100644
--- a/spec/versionedbeaconblockbody.go
+++ b/spec/versionedbeaconblockbody.go
@@ -66,7 +66,7 @@ func (v *VersionedBeaconBlockBody) String() string {
 		}
 
 		return v.Deneb.String()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/spec/versionedbeaconstate.go b/spec/versionedbeaconstate.go
index 3d3dc19..33f0bcd 100644
--- a/spec/versionedbeaconstate.go
+++ b/spec/versionedbeaconstate.go
@@ -73,7 +73,7 @@ func (v *VersionedBeaconState) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Slot, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no Electra state")
 		}
@@ -101,7 +101,7 @@ func (v *VersionedBeaconState) NextWithdrawalValidatorIndex() (phase0.ValidatorI
 		}
 
 		return v.Deneb.NextWithdrawalValidatorIndex, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no Electra state")
 		}
@@ -145,7 +145,7 @@ func (v *VersionedBeaconState) Validators() ([]*phase0.Validator, error) {
 		}
 
 		return v.Deneb.Validators, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra state")
 		}
@@ -189,7 +189,7 @@ func (v *VersionedBeaconState) ValidatorBalances() ([]phase0.Gwei, error) {
 		}
 
 		return v.Deneb.Balances, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra state")
 		}
@@ -205,7 +205,7 @@ func (v *VersionedBeaconState) DepositRequestsStartIndex() (uint64, error) {
 	switch v.Version {
 	case DataVersionPhase0, DataVersionAltair, DataVersionBellatrix, DataVersionCapella, DataVersionDeneb:
 		return 0, errors.New("state does not provide deposit requests start index")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no Electra state")
 		}
@@ -221,7 +221,7 @@ func (v *VersionedBeaconState) DepositBalanceToConsume() (phase0.Gwei, error) {
 	switch v.Version {
 	case DataVersionPhase0, DataVersionAltair, DataVersionBellatrix, DataVersionCapella, DataVersionDeneb:
 		return 0, errors.New("state does not provide deposit balance to consume")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no Electra state")
 		}
@@ -237,7 +237,7 @@ func (v *VersionedBeaconState) ExitBalanceToConsume() (phase0.Gwei, error) {
 	switch v.Version {
 	case DataVersionPhase0, DataVersionAltair, DataVersionBellatrix, DataVersionCapella, DataVersionDeneb:
 		return 0, errors.New("state does not provide exit balance to consume")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no Electra state")
 		}
@@ -253,7 +253,7 @@ func (v *VersionedBeaconState) EarliestExitEpoch() (phase0.Epoch, error) {
 	switch v.Version {
 	case DataVersionPhase0, DataVersionAltair, DataVersionBellatrix, DataVersionCapella, DataVersionDeneb:
 		return 0, errors.New("state does not provide earliest exit epoch")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return 0, errors.New("no Electra state")
 		}
@@ -269,7 +269,7 @@ func (v *VersionedBeaconState) PendingDeposits() ([]*electra.PendingDeposit, err
 	switch v.Version {
 	case DataVersionPhase0, DataVersionAltair, DataVersionBellatrix, DataVersionCapella, DataVersionDeneb:
 		return nil, errors.New("state does not provide pending deposits")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra state")
 		}
@@ -285,7 +285,7 @@ func (v *VersionedBeaconState) PendingPartialWithdrawals() ([]*electra.PendingPa
 	switch v.Version {
 	case DataVersionPhase0, DataVersionAltair, DataVersionBellatrix, DataVersionCapella, DataVersionDeneb:
 		return nil, errors.New("state does not provide pending partial withdrawals")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra state")
 		}
@@ -329,7 +329,7 @@ func (v *VersionedBeaconState) String() string {
 		}
 
 		return v.Deneb.String()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/spec/versionedindexedattestation.go b/spec/versionedindexedattestation.go
index a85b6f7..b4a0fca 100644
--- a/spec/versionedindexedattestation.go
+++ b/spec/versionedindexedattestation.go
@@ -69,7 +69,7 @@ func (v *VersionedIndexedAttestation) AttestingIndices() ([]uint64, error) {
 		}
 
 		return v.Deneb.AttestingIndices, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra indexed attestation")
 		}
@@ -113,7 +113,7 @@ func (v *VersionedIndexedAttestation) Data() (*phase0.AttestationData, error) {
 		}
 
 		return v.Deneb.Data, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return nil, errors.New("no Electra indexed attestation")
 		}
@@ -157,7 +157,7 @@ func (v *VersionedIndexedAttestation) Signature() (phase0.BLSSignature, error) {
 		}
 
 		return v.Deneb.Signature, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return phase0.BLSSignature{}, errors.New("no Electra indexed attestation")
 		}
@@ -201,7 +201,7 @@ func (v *VersionedIndexedAttestation) String() string {
 		}
 
 		return v.Deneb.String()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}
diff --git a/spec/versionedsignedbeaconblock.go b/spec/versionedsignedbeaconblock.go
index f11c718..d0f6b68 100644
--- a/spec/versionedsignedbeaconblock.go
+++ b/spec/versionedsignedbeaconblock.go
@@ -69,7 +69,7 @@ func (v *VersionedSignedBeaconBlock) Slot() (phase0.Slot, error) {
 		}
 
 		return v.Deneb.Message.Slot, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil {
 			return 0, errors.New("no electra block")
 		}
@@ -113,7 +113,7 @@ func (v *VersionedSignedBeaconBlock) ProposerIndex() (phase0.ValidatorIndex, err
 		}
 
 		return v.Deneb.Message.ProposerIndex, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil {
 			return 0, errors.New("no electra block")
 		}
@@ -151,7 +151,7 @@ func (v *VersionedSignedBeaconBlock) ExecutionBlockHash() (phase0.Hash32, error)
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayload.BlockHash, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -192,7 +192,7 @@ func (v *VersionedSignedBeaconBlock) ExecutionBlockNumber() (uint64, error) {
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayload.BlockNumber, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -237,7 +237,7 @@ func (v *VersionedSignedBeaconBlock) ExecutionTransactions() ([]bellatrix.Transa
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayload.Transactions, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -284,7 +284,7 @@ func (v *VersionedSignedBeaconBlock) Graffiti() ([32]byte, error) {
 		}
 
 		return v.Deneb.Message.Body.Graffiti, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return [32]byte{}, errors.New("no electra block")
 		}
@@ -370,7 +370,7 @@ func (v *VersionedSignedBeaconBlock) Attestations() ([]VersionedAttestation, err
 		}
 
 		return versionedAttestations, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -422,7 +422,7 @@ func (v *VersionedSignedBeaconBlock) Root() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.HashTreeRoot()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -466,7 +466,7 @@ func (v *VersionedSignedBeaconBlock) BodyRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.Body.HashTreeRoot()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -510,7 +510,7 @@ func (v *VersionedSignedBeaconBlock) ParentRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.ParentRoot, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -554,7 +554,7 @@ func (v *VersionedSignedBeaconBlock) StateRoot() (phase0.Root, error) {
 		}
 
 		return v.Deneb.Message.StateRoot, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil {
 			return phase0.Root{}, errors.New("no electra block")
 		}
@@ -598,7 +598,7 @@ func (v *VersionedSignedBeaconBlock) RandaoReveal() (phase0.BLSSignature, error)
 		}
 
 		return v.Deneb.Message.Body.RANDAOReveal, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return phase0.BLSSignature{}, errors.New("no electra block")
 		}
@@ -642,7 +642,7 @@ func (v *VersionedSignedBeaconBlock) ETH1Data() (*phase0.ETH1Data, error) {
 		}
 
 		return v.Deneb.Message.Body.ETH1Data, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -686,7 +686,7 @@ func (v *VersionedSignedBeaconBlock) Deposits() ([]*phase0.Deposit, error) {
 		}
 
 		return v.Deneb.Message.Body.Deposits, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -730,7 +730,7 @@ func (v *VersionedSignedBeaconBlock) VoluntaryExits() ([]*phase0.SignedVoluntary
 		}
 
 		return v.Deneb.Message.Body.VoluntaryExits, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -816,7 +816,7 @@ func (v *VersionedSignedBeaconBlock) AttesterSlashings() ([]VersionedAttesterSla
 		}
 
 		return versionedAttesterSlashings, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -868,7 +868,7 @@ func (v *VersionedSignedBeaconBlock) ProposerSlashings() ([]*phase0.ProposerSlas
 		}
 
 		return v.Deneb.Message.Body.ProposerSlashings, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -903,7 +903,7 @@ func (v *VersionedSignedBeaconBlock) Withdrawals() ([]*capella.Withdrawal, error
 		}
 
 		return v.Deneb.Message.Body.ExecutionPayload.Withdrawals, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil ||
@@ -934,7 +934,7 @@ func (v *VersionedSignedBeaconBlock) BlobKZGCommitments() ([]deneb.KZGCommitment
 		}
 
 		return v.Deneb.Message.Body.BlobKZGCommitments, nil
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil || v.Electra.Message == nil || v.Electra.Message.Body == nil {
 			return nil, errors.New("no electra block")
 		}
@@ -958,7 +958,7 @@ func (v *VersionedSignedBeaconBlock) ExecutionRequests() (*electra.ExecutionRequ
 		return nil, errors.New("capella block does not have execution requests")
 	case DataVersionDeneb:
 		return nil, errors.New("deneb block does not have execution requests")
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil ||
 			v.Electra.Message == nil ||
 			v.Electra.Message.Body == nil {
@@ -1004,7 +1004,7 @@ func (v *VersionedSignedBeaconBlock) String() string {
 		}
 
 		return v.Deneb.String()
-	case DataVersionAlpaca:
+	case DataVersionAlpaca, DataVersionBadger:
 		if v.Electra == nil {
 			return ""
 		}