diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7f7727e055f..aef6f6efadfd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,8 @@ The format is based on Keep a Changelog, and this project adheres to Semantic Ve
 - Updated the `beacon-chain/monitor` package to Electra. [PR](https://github.com/prysmaticlabs/prysm/pull/14562)
 - Added ListAttestationsV2 endpoint.
 - Add ability to rollback node's internal state during processing.
+- Change how unsafe protobuf state is created to prevent unnecessary copies.
+- Added benchmarks for process slots for Capella, Deneb, Electra
 
 ### Changed
 
@@ -32,12 +34,17 @@ The format is based on Keep a Changelog, and this project adheres to Semantic Ve
 - Use read only validator for core processing to avoid unnecessary copying.
 - Use ROBlock across block processing pipeline.
 - Added missing Eth-Consensus-Version headers to GetBlockAttestationsV2 and GetAttesterSlashingsV2 endpoints.
+- When instantiating new validators, explicit set `Slashed` to false and move `EffectiveBalance` to match struct definition.
 - Updated pgo profile for beacon chain with holesky data. This improves the profile guided
   optimizations in the go compiler.
 - Use read only state when computing the active validator list.
 - Simplified `ExitedValidatorIndices`.
 - Simplified `EjectedValidatorIndices`.
 - `engine_newPayloadV4`,`engine_getPayloadV4` are changes due to new execution request serialization decisions, [PR](https://github.com/prysmaticlabs/prysm/pull/14580)
+- Use ROBlock earlier in block syncing pipeline. 
+- Changed the signature of `ProcessPayload`.
+- Only Build the Protobuf state once during serialization.
+- Capella blocks are execution.
 - updated geth to 1.14 ~
 - e2e tests start from capella
 
@@ -177,6 +184,7 @@ Updating to this release is recommended at your convenience.
 - Light client support: fix light client attested header execution fields' wrong version bug.
 - Testing: added custom matcher for better push settings testing.
 - Registered `GetDepositSnapshot` Beacon API endpoint.
+- Fix rolling back of a block due to a context deadline.
 
 ### Security
 
diff --git a/beacon-chain/blockchain/process_block.go b/beacon-chain/blockchain/process_block.go
index 7a55c3f83fba..e2889507b801 100644
--- a/beacon-chain/blockchain/process_block.go
+++ b/beacon-chain/blockchain/process_block.go
@@ -76,6 +76,8 @@ func (s *Service) postBlockProcess(cfg *postBlockProcessConfig) error {
 
 	err := s.cfg.ForkChoiceStore.InsertNode(ctx, cfg.postState, cfg.roblock)
 	if err != nil {
+		// Do not use parent context in the event it deadlined
+		ctx = trace.NewContext(context.Background(), span)
 		s.rollbackBlock(ctx, cfg.roblock.Root())
 		return errors.Wrapf(err, "could not insert block %d to fork choice store", cfg.roblock.Block().Slot())
 	}
diff --git a/beacon-chain/blockchain/process_block_test.go b/beacon-chain/blockchain/process_block_test.go
index 7ed483861f1c..53fb11e8055f 100644
--- a/beacon-chain/blockchain/process_block_test.go
+++ b/beacon-chain/blockchain/process_block_test.go
@@ -1520,7 +1520,9 @@ func TestStore_NoViableHead_NewPayload(t *testing.T) {
 	require.NoError(t, err)
 	preStateVersion, preStateHeader, err := getStateVersionAndPayload(preState)
 	require.NoError(t, err)
-	_, err = service.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, wsb, root)
+	rowsb, err := consensusblocks.NewROBlockWithRoot(wsb, root)
+	require.NoError(t, err)
+	_, err = service.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, rowsb)
 	require.ErrorContains(t, "received an INVALID payload from execution engine", err)
 	// Check that forkchoice's head and store's headroot are the previous head (since the invalid block did
 	// not finish importing and it was never imported to forkchoice). Check
@@ -1714,7 +1716,9 @@ func TestStore_NoViableHead_Liveness(t *testing.T) {
 	require.NoError(t, err)
 	preStateVersion, preStateHeader, err := getStateVersionAndPayload(preState)
 	require.NoError(t, err)
-	_, err = service.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, wsb, root)
+	rowsb, err := consensusblocks.NewROBlockWithRoot(wsb, root)
+	require.NoError(t, err)
+	_, err = service.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, rowsb)
 	require.ErrorContains(t, "received an INVALID payload from execution engine", err)
 
 	// Check that forkchoice's head and store's headroot are the previous head (since the invalid block did
@@ -1964,7 +1968,9 @@ func TestNoViableHead_Reboot(t *testing.T) {
 	require.NoError(t, err)
 	preStateVersion, preStateHeader, err := getStateVersionAndPayload(preState)
 	require.NoError(t, err)
-	_, err = service.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, wsb, root)
+	rowsb, err := consensusblocks.NewROBlockWithRoot(wsb, root)
+	require.NoError(t, err)
+	_, err = service.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, rowsb)
 	require.ErrorContains(t, "received an INVALID payload from execution engine", err)
 
 	// Check that the headroot/state are not in DB and restart the node
@@ -2346,6 +2352,85 @@ func TestRollbackBlock(t *testing.T) {
 	require.Equal(t, false, hasState)
 }
 
+func TestRollbackBlock_ContextDeadline(t *testing.T) {
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
+
+	st, keys := util.DeterministicGenesisState(t, 64)
+	stateRoot, err := st.HashTreeRoot(ctx)
+	require.NoError(t, err, "Could not hash genesis state")
+
+	require.NoError(t, service.saveGenesisData(ctx, st))
+
+	genesis := blocks.NewGenesisBlock(stateRoot[:])
+	wsb, err := consensusblocks.NewSignedBeaconBlock(genesis)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.BeaconDB.SaveBlock(ctx, wsb), "Could not save genesis block")
+	parentRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err, "Could not get signing root")
+	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, st, parentRoot), "Could not save genesis state")
+	require.NoError(t, service.cfg.BeaconDB.SaveHeadBlockRoot(ctx, parentRoot), "Could not save genesis state")
+	require.NoError(t, service.cfg.BeaconDB.SaveJustifiedCheckpoint(ctx, &ethpb.Checkpoint{Root: parentRoot[:]}))
+	require.NoError(t, service.cfg.BeaconDB.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Root: parentRoot[:]}))
+
+	st, err = service.HeadState(ctx)
+	require.NoError(t, err)
+	b, err := util.GenerateFullBlock(st, keys, util.DefaultBlockGenConfig(), 33)
+	require.NoError(t, err)
+	wsb, err = consensusblocks.NewSignedBeaconBlock(b)
+	require.NoError(t, err)
+	root, err := b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	preState, err := service.getBlockPreState(ctx, wsb.Block())
+	require.NoError(t, err)
+	postState, err := service.validateStateTransition(ctx, preState, wsb)
+	require.NoError(t, err)
+	require.NoError(t, service.savePostStateInfo(ctx, root, wsb, postState))
+	roblock, err := consensusblocks.NewROBlockWithRoot(wsb, root)
+	require.NoError(t, err)
+	require.NoError(t, service.postBlockProcess(&postBlockProcessConfig{ctx, roblock, [32]byte{}, postState, false}))
+
+	b, err = util.GenerateFullBlock(postState, keys, util.DefaultBlockGenConfig(), 34)
+	require.NoError(t, err)
+	wsb, err = consensusblocks.NewSignedBeaconBlock(b)
+	require.NoError(t, err)
+	root, err = b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	preState, err = service.getBlockPreState(ctx, wsb.Block())
+	require.NoError(t, err)
+	postState, err = service.validateStateTransition(ctx, preState, wsb)
+	require.NoError(t, err)
+	require.NoError(t, service.savePostStateInfo(ctx, root, wsb, postState))
+
+	require.Equal(t, true, service.cfg.BeaconDB.HasBlock(ctx, root))
+	hasState, err := service.cfg.StateGen.HasState(ctx, root)
+	require.NoError(t, err)
+	require.Equal(t, true, hasState)
+
+	// Set deadlined context when processing the block
+	cancCtx, canc := context.WithCancel(context.Background())
+	canc()
+	roblock, err = consensusblocks.NewROBlockWithRoot(wsb, root)
+	require.NoError(t, err)
+
+	parentRoot = roblock.Block().ParentRoot()
+
+	cj := &ethpb.Checkpoint{}
+	cj.Epoch = 1
+	cj.Root = parentRoot[:]
+	require.NoError(t, postState.SetCurrentJustifiedCheckpoint(cj))
+	require.NoError(t, postState.SetFinalizedCheckpoint(cj))
+
+	// Rollback block insertion into db and caches.
+	require.ErrorContains(t, "context canceled", service.postBlockProcess(&postBlockProcessConfig{cancCtx, roblock, [32]byte{}, postState, false}))
+
+	// The block should no longer exist.
+	require.Equal(t, false, service.cfg.BeaconDB.HasBlock(ctx, root))
+	hasState, err = service.cfg.StateGen.HasState(ctx, root)
+	require.NoError(t, err)
+	require.Equal(t, false, hasState)
+}
+
 func fakeCommitments(n int) [][]byte {
 	f := make([][]byte, n)
 	for i := range f {
diff --git a/beacon-chain/blockchain/receive_block.go b/beacon-chain/blockchain/receive_block.go
index e6afed076852..ff8c4d9187e4 100644
--- a/beacon-chain/blockchain/receive_block.go
+++ b/beacon-chain/blockchain/receive_block.go
@@ -18,6 +18,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/config/features"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	consensus_blocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
@@ -84,7 +85,12 @@ func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySig
 	}
 
 	currentCheckpoints := s.saveCurrentCheckpoints(preState)
-	postState, isValidPayload, err := s.validateExecutionAndConsensus(ctx, preState, blockCopy, blockRoot)
+	roblock, err := consensus_blocks.NewROBlockWithRoot(blockCopy, blockRoot)
+	if err != nil {
+		return err
+	}
+
+	postState, isValidPayload, err := s.validateExecutionAndConsensus(ctx, preState, roblock)
 	if err != nil {
 		return err
 	}
@@ -101,10 +107,6 @@ func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySig
 	if err := s.savePostStateInfo(ctx, blockRoot, blockCopy, postState); err != nil {
 		return errors.Wrap(err, "could not save post state info")
 	}
-	roblock, err := consensus_blocks.NewROBlockWithRoot(blockCopy, blockRoot)
-	if err != nil {
-		return err
-	}
 	args := &postBlockProcessConfig{
 		ctx:            ctx,
 		roblock:        roblock,
@@ -188,8 +190,7 @@ func (s *Service) updateCheckpoints(
 func (s *Service) validateExecutionAndConsensus(
 	ctx context.Context,
 	preState state.BeaconState,
-	block interfaces.SignedBeaconBlock,
-	blockRoot [32]byte,
+	block consensusblocks.ROBlock,
 ) (state.BeaconState, bool, error) {
 	preStateVersion, preStateHeader, err := getStateVersionAndPayload(preState)
 	if err != nil {
@@ -208,7 +209,7 @@ func (s *Service) validateExecutionAndConsensus(
 	var isValidPayload bool
 	eg.Go(func() error {
 		var err error
-		isValidPayload, err = s.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, block, blockRoot)
+		isValidPayload, err = s.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, block)
 		if err != nil {
 			return errors.Wrap(err, "could not notify the engine of the new payload")
 		}
@@ -559,16 +560,16 @@ func (s *Service) sendBlockAttestationsToSlasher(signed interfaces.ReadOnlySigne
 }
 
 // validateExecutionOnBlock notifies the engine of the incoming block execution payload and returns true if the payload is valid
-func (s *Service) validateExecutionOnBlock(ctx context.Context, ver int, header interfaces.ExecutionData, signed interfaces.ReadOnlySignedBeaconBlock, blockRoot [32]byte) (bool, error) {
-	isValidPayload, err := s.notifyNewPayload(ctx, ver, header, signed)
+func (s *Service) validateExecutionOnBlock(ctx context.Context, ver int, header interfaces.ExecutionData, block consensusblocks.ROBlock) (bool, error) {
+	isValidPayload, err := s.notifyNewPayload(ctx, ver, header, block)
 	if err != nil {
 		s.cfg.ForkChoiceStore.Lock()
-		err = s.handleInvalidExecutionError(ctx, err, blockRoot, signed.Block().ParentRoot())
+		err = s.handleInvalidExecutionError(ctx, err, block.Root(), block.Block().ParentRoot())
 		s.cfg.ForkChoiceStore.Unlock()
 		return false, err
 	}
-	if signed.Version() < version.Capella && isValidPayload {
-		if err := s.validateMergeTransitionBlock(ctx, ver, header, signed); err != nil {
+	if block.Block().Version() < version.Capella && isValidPayload {
+		if err := s.validateMergeTransitionBlock(ctx, ver, header, block); err != nil {
 			return isValidPayload, err
 		}
 	}
diff --git a/beacon-chain/core/altair/deposit.go b/beacon-chain/core/altair/deposit.go
index 084643324e40..5aeb23c100c6 100644
--- a/beacon-chain/core/altair/deposit.go
+++ b/beacon-chain/core/altair/deposit.go
@@ -187,11 +187,12 @@ func AddValidatorToRegistry(beaconState state.BeaconState, pubKey []byte, withdr
 //	return Validator(
 //	    pubkey=pubkey,
 //	    withdrawal_credentials=withdrawal_credentials,
+//	    effective_balance=effective_balance,
+//	    slashed=False,
 //	    activation_eligibility_epoch=FAR_FUTURE_EPOCH,
 //	    activation_epoch=FAR_FUTURE_EPOCH,
 //	    exit_epoch=FAR_FUTURE_EPOCH,
 //	    withdrawable_epoch=FAR_FUTURE_EPOCH,
-//	    effective_balance=effective_balance,
 //	)
 func GetValidatorFromDeposit(pubKey []byte, withdrawalCredentials []byte, amount uint64) *ethpb.Validator {
 	effectiveBalance := amount - (amount % params.BeaconConfig().EffectiveBalanceIncrement)
@@ -202,10 +203,11 @@ func GetValidatorFromDeposit(pubKey []byte, withdrawalCredentials []byte, amount
 	return &ethpb.Validator{
 		PublicKey:                  pubKey,
 		WithdrawalCredentials:      withdrawalCredentials,
+		EffectiveBalance:           effectiveBalance,
+		Slashed:                    false,
 		ActivationEligibilityEpoch: params.BeaconConfig().FarFutureEpoch,
 		ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
 		ExitEpoch:                  params.BeaconConfig().FarFutureEpoch,
 		WithdrawableEpoch:          params.BeaconConfig().FarFutureEpoch,
-		EffectiveBalance:           effectiveBalance,
 	}
 }
diff --git a/beacon-chain/core/blocks/payload.go b/beacon-chain/core/blocks/payload.go
index a7ffde06aa5f..6d52931b1418 100644
--- a/beacon-chain/core/blocks/payload.go
+++ b/beacon-chain/core/blocks/payload.go
@@ -61,6 +61,9 @@ func IsExecutionBlock(body interfaces.ReadOnlyBeaconBlockBody) (bool, error) {
 	if body == nil {
 		return false, errors.New("nil block body")
 	}
+	if body.Version() >= version.Capella {
+		return true, nil
+	}
 	payload, err := body.Execution()
 	switch {
 	case errors.Is(err, consensus_types.ErrUnsupportedField):
@@ -202,24 +205,24 @@ func ValidatePayload(st state.BeaconState, payload interfaces.ExecutionData) err
 //	    block_hash=payload.block_hash,
 //	    transactions_root=hash_tree_root(payload.transactions),
 //	)
-func ProcessPayload(st state.BeaconState, body interfaces.ReadOnlyBeaconBlockBody) (state.BeaconState, error) {
+func ProcessPayload(st state.BeaconState, body interfaces.ReadOnlyBeaconBlockBody) error {
 	payload, err := body.Execution()
 	if err != nil {
-		return nil, err
+		return err
 	}
 	if err := verifyBlobCommitmentCount(body); err != nil {
-		return nil, err
+		return err
 	}
 	if err := ValidatePayloadWhenMergeCompletes(st, payload); err != nil {
-		return nil, err
+		return err
 	}
 	if err := ValidatePayload(st, payload); err != nil {
-		return nil, err
+		return err
 	}
 	if err := st.SetLatestExecutionPayloadHeader(payload); err != nil {
-		return nil, err
+		return err
 	}
-	return st, nil
+	return nil
 }
 
 func verifyBlobCommitmentCount(body interfaces.ReadOnlyBeaconBlockBody) error {
diff --git a/beacon-chain/core/blocks/payload_test.go b/beacon-chain/core/blocks/payload_test.go
index 20992c949aa2..38ce31eaa2d1 100644
--- a/beacon-chain/core/blocks/payload_test.go
+++ b/beacon-chain/core/blocks/payload_test.go
@@ -253,7 +253,8 @@ func Test_IsExecutionBlockCapella(t *testing.T) {
 	require.NoError(t, err)
 	got, err := blocks.IsExecutionBlock(wrappedBlock.Body())
 	require.NoError(t, err)
-	require.Equal(t, false, got)
+	// #14614
+	require.Equal(t, true, got)
 }
 
 func Test_IsExecutionEnabled(t *testing.T) {
@@ -587,8 +588,7 @@ func Test_ProcessPayload(t *testing.T) {
 				ExecutionPayload: tt.payload,
 			})
 			require.NoError(t, err)
-			st, err := blocks.ProcessPayload(st, body)
-			if err != nil {
+			if err := blocks.ProcessPayload(st, body); err != nil {
 				require.Equal(t, tt.err.Error(), err.Error())
 			} else {
 				require.Equal(t, tt.err, err)
@@ -619,8 +619,7 @@ func Test_ProcessPayloadCapella(t *testing.T) {
 		ExecutionPayload: payload,
 	})
 	require.NoError(t, err)
-	_, err = blocks.ProcessPayload(st, body)
-	require.NoError(t, err)
+	require.NoError(t, blocks.ProcessPayload(st, body))
 }
 
 func Test_ProcessPayload_Blinded(t *testing.T) {
@@ -677,8 +676,7 @@ func Test_ProcessPayload_Blinded(t *testing.T) {
 				ExecutionPayloadHeader: p,
 			})
 			require.NoError(t, err)
-			st, err := blocks.ProcessPayload(st, body)
-			if err != nil {
+			if err := blocks.ProcessPayload(st, body); err != nil {
 				require.Equal(t, tt.err.Error(), err.Error())
 			} else {
 				require.Equal(t, tt.err, err)
diff --git a/beacon-chain/core/electra/deposits.go b/beacon-chain/core/electra/deposits.go
index 31fec1191af7..098f2ceaf56f 100644
--- a/beacon-chain/core/electra/deposits.go
+++ b/beacon-chain/core/electra/deposits.go
@@ -508,11 +508,12 @@ func AddValidatorToRegistry(beaconState state.BeaconState, pubKey []byte, withdr
 //	validator = Validator(
 //	    pubkey=pubkey,
 //	    withdrawal_credentials=withdrawal_credentials,
+//	    effective_balance=Gwei(0),
+//	    slashed=False,
 //	    activation_eligibility_epoch=FAR_FUTURE_EPOCH,
 //	    activation_epoch=FAR_FUTURE_EPOCH,
 //	    exit_epoch=FAR_FUTURE_EPOCH,
 //	    withdrawable_epoch=FAR_FUTURE_EPOCH,
-//	    effective_balance=Gwei(0),
 //	)
 //
 //	# [Modified in Electra:EIP7251]
@@ -524,11 +525,12 @@ func GetValidatorFromDeposit(pubKey []byte, withdrawalCredentials []byte, amount
 	validator := &ethpb.Validator{
 		PublicKey:                  pubKey,
 		WithdrawalCredentials:      withdrawalCredentials,
+		EffectiveBalance:           0,
+		Slashed:                    false,
 		ActivationEligibilityEpoch: params.BeaconConfig().FarFutureEpoch,
 		ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
 		ExitEpoch:                  params.BeaconConfig().FarFutureEpoch,
 		WithdrawableEpoch:          params.BeaconConfig().FarFutureEpoch,
-		EffectiveBalance:           0,
 	}
 	v, err := state_native.NewValidator(validator)
 	if err != nil {
diff --git a/beacon-chain/core/transition/transition_no_verify_sig.go b/beacon-chain/core/transition/transition_no_verify_sig.go
index 402d607837b3..e633c844d35b 100644
--- a/beacon-chain/core/transition/transition_no_verify_sig.go
+++ b/beacon-chain/core/transition/transition_no_verify_sig.go
@@ -333,8 +333,7 @@ func ProcessBlockForStateRoot(
 				return nil, errors.Wrap(err, "could not process withdrawals")
 			}
 		}
-		state, err = b.ProcessPayload(state, blk.Body())
-		if err != nil {
+		if err = b.ProcessPayload(state, blk.Body()); err != nil {
 			return nil, errors.Wrap(err, "could not process execution data")
 		}
 	}
diff --git a/beacon-chain/core/transition/transition_test.go b/beacon-chain/core/transition/transition_test.go
index 9000afeee603..c03bdbafdc5a 100644
--- a/beacon-chain/core/transition/transition_test.go
+++ b/beacon-chain/core/transition/transition_test.go
@@ -698,3 +698,45 @@ func TestProcessSlotsConditionally(t *testing.T) {
 		assert.Equal(t, primitives.Slot(6), s.Slot())
 	})
 }
+
+func BenchmarkProcessSlots_Capella(b *testing.B) {
+	st, _ := util.DeterministicGenesisStateCapella(b, params.BeaconConfig().MaxValidatorsPerCommittee)
+
+	var err error
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		st, err = transition.ProcessSlots(context.Background(), st, st.Slot()+1)
+		if err != nil {
+			b.Fatalf("Failed to process slot %v", err)
+		}
+	}
+}
+
+func BenchmarkProcessSlots_Deneb(b *testing.B) {
+	st, _ := util.DeterministicGenesisStateDeneb(b, params.BeaconConfig().MaxValidatorsPerCommittee)
+
+	var err error
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		st, err = transition.ProcessSlots(context.Background(), st, st.Slot()+1)
+		if err != nil {
+			b.Fatalf("Failed to process slot %v", err)
+		}
+	}
+}
+
+func BenchmarkProcessSlots_Electra(b *testing.B) {
+	st, _ := util.DeterministicGenesisStateElectra(b, params.BeaconConfig().MaxValidatorsPerCommittee)
+
+	var err error
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		st, err = transition.ProcessSlots(context.Background(), st, st.Slot()+1)
+		if err != nil {
+			b.Fatalf("Failed to process slot %v", err)
+		}
+	}
+}
diff --git a/beacon-chain/db/kv/state.go b/beacon-chain/db/kv/state.go
index b78e45ab25bd..8f840448d452 100644
--- a/beacon-chain/db/kv/state.go
+++ b/beacon-chain/db/kv/state.go
@@ -18,6 +18,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing"
 	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/time"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	bolt "go.etcd.io/bbolt"
@@ -603,14 +604,14 @@ func (s *Store) unmarshalState(_ context.Context, enc []byte, validatorEntries [
 
 // marshal versioned state from struct type down to bytes.
 func marshalState(ctx context.Context, st state.ReadOnlyBeaconState) ([]byte, error) {
-	switch st.ToProtoUnsafe().(type) {
-	case *ethpb.BeaconState:
+	switch st.Version() {
+	case version.Phase0:
 		rState, ok := st.ToProtoUnsafe().(*ethpb.BeaconState)
 		if !ok {
 			return nil, errors.New("non valid inner state")
 		}
 		return encode(ctx, rState)
-	case *ethpb.BeaconStateAltair:
+	case version.Altair:
 		rState, ok := st.ToProtoUnsafe().(*ethpb.BeaconStateAltair)
 		if !ok {
 			return nil, errors.New("non valid inner state")
@@ -623,7 +624,7 @@ func marshalState(ctx context.Context, st state.ReadOnlyBeaconState) ([]byte, er
 			return nil, err
 		}
 		return snappy.Encode(nil, append(altairKey, rawObj...)), nil
-	case *ethpb.BeaconStateBellatrix:
+	case version.Bellatrix:
 		rState, ok := st.ToProtoUnsafe().(*ethpb.BeaconStateBellatrix)
 		if !ok {
 			return nil, errors.New("non valid inner state")
@@ -636,7 +637,7 @@ func marshalState(ctx context.Context, st state.ReadOnlyBeaconState) ([]byte, er
 			return nil, err
 		}
 		return snappy.Encode(nil, append(bellatrixKey, rawObj...)), nil
-	case *ethpb.BeaconStateCapella:
+	case version.Capella:
 		rState, ok := st.ToProtoUnsafe().(*ethpb.BeaconStateCapella)
 		if !ok {
 			return nil, errors.New("non valid inner state")
@@ -649,7 +650,7 @@ func marshalState(ctx context.Context, st state.ReadOnlyBeaconState) ([]byte, er
 			return nil, err
 		}
 		return snappy.Encode(nil, append(capellaKey, rawObj...)), nil
-	case *ethpb.BeaconStateDeneb:
+	case version.Deneb:
 		rState, ok := st.ToProtoUnsafe().(*ethpb.BeaconStateDeneb)
 		if !ok {
 			return nil, errors.New("non valid inner state")
@@ -662,7 +663,7 @@ func marshalState(ctx context.Context, st state.ReadOnlyBeaconState) ([]byte, er
 			return nil, err
 		}
 		return snappy.Encode(nil, append(denebKey, rawObj...)), nil
-	case *ethpb.BeaconStateElectra:
+	case version.Electra:
 		rState, ok := st.ToProtoUnsafe().(*ethpb.BeaconStateElectra)
 		if !ok {
 			return nil, errors.New("non valid inner state")
diff --git a/beacon-chain/state/state-native/getters_state.go b/beacon-chain/state/state-native/getters_state.go
index 29519afc7cee..b4512a8a2744 100644
--- a/beacon-chain/state/state-native/getters_state.go
+++ b/beacon-chain/state/state-native/getters_state.go
@@ -22,12 +22,22 @@ func (b *BeaconState) ToProtoUnsafe() interface{} {
 	rm := b.randaoMixesVal().Slice()
 	var vals []*ethpb.Validator
 	var bals []uint64
+	var inactivityScores []uint64
+
 	if features.Get().EnableExperimentalState {
-		vals = b.validatorsVal()
-		bals = b.balancesVal()
+		if b.balancesMultiValue != nil {
+			bals = b.balancesMultiValue.Value(b)
+		}
+		if b.inactivityScoresMultiValue != nil {
+			inactivityScores = b.inactivityScoresMultiValue.Value(b)
+		}
+		if b.validatorsMultiValue != nil {
+			vals = b.validatorsMultiValue.Value(b)
+		}
 	} else {
-		vals = b.validators
 		bals = b.balances
+		inactivityScores = b.inactivityScores
+		vals = b.validators
 	}
 
 	switch b.version {
@@ -78,7 +88,7 @@ func (b *BeaconState) ToProtoUnsafe() interface{} {
 			PreviousJustifiedCheckpoint: b.previousJustifiedCheckpoint,
 			CurrentJustifiedCheckpoint:  b.currentJustifiedCheckpoint,
 			FinalizedCheckpoint:         b.finalizedCheckpoint,
-			InactivityScores:            b.inactivityScoresVal(),
+			InactivityScores:            inactivityScores,
 			CurrentSyncCommittee:        b.currentSyncCommittee,
 			NextSyncCommittee:           b.nextSyncCommittee,
 		}
@@ -105,7 +115,7 @@ func (b *BeaconState) ToProtoUnsafe() interface{} {
 			PreviousJustifiedCheckpoint:  b.previousJustifiedCheckpoint,
 			CurrentJustifiedCheckpoint:   b.currentJustifiedCheckpoint,
 			FinalizedCheckpoint:          b.finalizedCheckpoint,
-			InactivityScores:             b.inactivityScoresVal(),
+			InactivityScores:             inactivityScores,
 			CurrentSyncCommittee:         b.currentSyncCommittee,
 			NextSyncCommittee:            b.nextSyncCommittee,
 			LatestExecutionPayloadHeader: b.latestExecutionPayloadHeader,
@@ -133,7 +143,7 @@ func (b *BeaconState) ToProtoUnsafe() interface{} {
 			PreviousJustifiedCheckpoint:  b.previousJustifiedCheckpoint,
 			CurrentJustifiedCheckpoint:   b.currentJustifiedCheckpoint,
 			FinalizedCheckpoint:          b.finalizedCheckpoint,
-			InactivityScores:             b.inactivityScoresVal(),
+			InactivityScores:             inactivityScores,
 			CurrentSyncCommittee:         b.currentSyncCommittee,
 			NextSyncCommittee:            b.nextSyncCommittee,
 			LatestExecutionPayloadHeader: b.latestExecutionPayloadHeaderCapella,
@@ -164,7 +174,7 @@ func (b *BeaconState) ToProtoUnsafe() interface{} {
 			PreviousJustifiedCheckpoint:  b.previousJustifiedCheckpoint,
 			CurrentJustifiedCheckpoint:   b.currentJustifiedCheckpoint,
 			FinalizedCheckpoint:          b.finalizedCheckpoint,
-			InactivityScores:             b.inactivityScoresVal(),
+			InactivityScores:             inactivityScores,
 			CurrentSyncCommittee:         b.currentSyncCommittee,
 			NextSyncCommittee:            b.nextSyncCommittee,
 			LatestExecutionPayloadHeader: b.latestExecutionPayloadHeaderDeneb,
@@ -195,7 +205,7 @@ func (b *BeaconState) ToProtoUnsafe() interface{} {
 			PreviousJustifiedCheckpoint:   b.previousJustifiedCheckpoint,
 			CurrentJustifiedCheckpoint:    b.currentJustifiedCheckpoint,
 			FinalizedCheckpoint:           b.finalizedCheckpoint,
-			InactivityScores:              b.inactivityScoresVal(),
+			InactivityScores:              inactivityScores,
 			CurrentSyncCommittee:          b.currentSyncCommittee,
 			NextSyncCommittee:             b.nextSyncCommittee,
 			LatestExecutionPayloadHeader:  b.latestExecutionPayloadHeaderDeneb,
diff --git a/testing/spectest/shared/common/operations/block_header.go b/testing/spectest/shared/common/operations/block_header.go
index d38221535aff..c1f01e597ef1 100644
--- a/testing/spectest/shared/common/operations/block_header.go
+++ b/testing/spectest/shared/common/operations/block_header.go
@@ -56,10 +56,10 @@ func RunBlockHeaderTest(t *testing.T, config string, fork string, sszToBlock SSZ
 			bodyRoot, err := block.Block().Body().HashTreeRoot()
 			require.NoError(t, err)
 			pr := block.Block().ParentRoot()
-			beaconState, err := blocks.ProcessBlockHeaderNoVerify(context.Background(), preBeaconState, block.Block().Slot(), block.Block().ProposerIndex(), pr[:], bodyRoot[:])
+			_, err = blocks.ProcessBlockHeaderNoVerify(context.Background(), preBeaconState, block.Block().Slot(), block.Block().ProposerIndex(), pr[:], bodyRoot[:])
 			if postSSZExists {
 				require.NoError(t, err)
-				comparePostState(t, postSSZFilepath, sszToState, preBeaconState, beaconState)
+				comparePostState(t, postSSZFilepath, sszToState, preBeaconState)
 			} else {
 				// Note: This doesn't test anything worthwhile. It essentially tests
 				// that *any* error has occurred, not any specific error.
diff --git a/testing/spectest/shared/common/operations/execution_payload.go b/testing/spectest/shared/common/operations/execution_payload.go
index c305efae2cd0..652b500aa496 100644
--- a/testing/spectest/shared/common/operations/execution_payload.go
+++ b/testing/spectest/shared/common/operations/execution_payload.go
@@ -54,10 +54,10 @@ func RunExecutionPayloadTest(t *testing.T, config string, fork string, sszToBloc
 			config := &ExecutionConfig{}
 			require.NoError(t, utils.UnmarshalYaml(file, config), "Failed to Unmarshal")
 
-			gotState, err := blocks.ProcessPayload(preBeaconState, body)
+			err = blocks.ProcessPayload(preBeaconState, body)
 			if postSSZExists {
 				require.NoError(t, err)
-				comparePostState(t, postSSZFilepath, sszToState, preBeaconState, gotState)
+				comparePostState(t, postSSZFilepath, sszToState, preBeaconState)
 			} else if config.Valid {
 				// Note: This doesn't test anything worthwhile. It essentially tests
 				// that *any* error has occurred, not any specific error.
diff --git a/testing/spectest/shared/common/operations/test_runner.go b/testing/spectest/shared/common/operations/test_runner.go
index e166c830f0dc..1fa5087841b7 100644
--- a/testing/spectest/shared/common/operations/test_runner.go
+++ b/testing/spectest/shared/common/operations/test_runner.go
@@ -50,10 +50,10 @@ func RunBlockOperationTest(
 	}
 
 	helpers.ClearCache()
-	beaconState, err := operationFn(context.Background(), preState, wsb)
+	_, err = operationFn(context.Background(), preState, wsb)
 	if postSSZExists {
 		require.NoError(t, err)
-		comparePostState(t, postSSZFilepath, sszToState, preState, beaconState)
+		comparePostState(t, postSSZFilepath, sszToState, preState)
 	} else {
 		// Note: This doesn't test anything worthwhile. It essentially tests
 		// that *any* error has occurred, not any specific error.
@@ -65,7 +65,7 @@ func RunBlockOperationTest(
 	}
 }
 
-func comparePostState(t *testing.T, postSSZFilepath string, sszToState SSZToState, want state.BeaconState, got state.BeaconState) {
+func comparePostState(t *testing.T, postSSZFilepath string, sszToState SSZToState, want state.BeaconState) {
 	postBeaconStateFile, err := os.ReadFile(postSSZFilepath) // #nosec G304
 	require.NoError(t, err)
 	postBeaconStateSSZ, err := snappy.Decode(nil /* dst */, postBeaconStateFile)