diff --git a/cmd/harmony/main.go b/cmd/harmony/main.go
index 4e63ad447..2424791f0 100644
--- a/cmd/harmony/main.go
+++ b/cmd/harmony/main.go
@@ -722,11 +722,12 @@ func setupConsensusAndNode(hc harmonyconfig.HarmonyConfig, nodeConfig *nodeconfi
 
 	// We are not beacon chain, make sure beacon already initialized.
 	if nodeConfig.ShardID != shard.BeaconChainShardID {
-		_, err = collection.ShardChain(shard.BeaconChainShardID, core.Options{EpochChain: true})
+		beacon, err := collection.ShardChain(shard.BeaconChainShardID, core.Options{EpochChain: true})
 		if err != nil {
 			_, _ = fmt.Fprintf(os.Stderr, "Error :%v \n", err)
 			os.Exit(1)
 		}
+		registry.SetBeaconchain(beacon)
 	}
 
 	blockchain, err = collection.ShardChain(nodeConfig.ShardID)
@@ -734,11 +735,16 @@ func setupConsensusAndNode(hc harmonyconfig.HarmonyConfig, nodeConfig *nodeconfi
 		_, _ = fmt.Fprintf(os.Stderr, "Error :%v \n", err)
 		os.Exit(1)
 	}
+	registry.SetBlockchain(blockchain)
+	registry.SetWebHooks(nodeConfig.WebHooks.Hooks)
+	if registry.GetBeaconchain() == nil {
+		registry.SetBeaconchain(registry.GetBlockchain())
+	}
 
 	// Consensus object.
 	decider := quorum.NewDecider(quorum.SuperMajorityVote, nodeConfig.ShardID)
 	currentConsensus, err := consensus.New(
-		myHost, nodeConfig.ShardID, nodeConfig.ConsensusPriKey, registry.SetBlockchain(blockchain), decider, minPeers, aggregateSig)
+		myHost, nodeConfig.ShardID, nodeConfig.ConsensusPriKey, registry, decider, minPeers, aggregateSig)
 
 	if err != nil {
 		_, _ = fmt.Fprintf(os.Stderr, "Error :%v \n", err)
@@ -794,9 +800,6 @@ func setupConsensusAndNode(hc harmonyconfig.HarmonyConfig, nodeConfig *nodeconfi
 		Uint64("viewID", viewID).
 		Msg("Init Blockchain")
 
-	// Assign closure functions to the consensus object
-	currentConsensus.SetBlockVerifier(
-		node.VerifyNewBlock(currentNode.NodeConfig, currentNode.Blockchain(), currentNode.Beaconchain()))
 	currentConsensus.PostConsensusJob = currentNode.PostConsensusProcessing
 	// update consensus information based on the blockchain
 	currentConsensus.SetMode(currentConsensus.UpdateConsensusInformation())
diff --git a/consensus/consensus.go b/consensus/consensus.go
index c5573c972..ca2890fbb 100644
--- a/consensus/consensus.go
+++ b/consensus/consensus.go
@@ -6,6 +6,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/harmony-one/harmony/consensus/engine"
 	"github.com/harmony-one/harmony/core"
 	"github.com/harmony-one/harmony/crypto/bls"
 	"github.com/harmony-one/harmony/internal/registry"
@@ -139,14 +140,20 @@ func (consensus *Consensus) Blockchain() core.BlockChain {
 	return consensus.registry.GetBlockchain()
 }
 
-func (consensus *Consensus) ReadySignal(p ProposalType) {
-	consensus.readySignal <- p
+// ChainReader returns the chain reader.
+// This is mostly the same as Blockchain, but it returns only read methods, so we assume it's safe for concurrent use.
+func (consensus *Consensus) ChainReader() engine.ChainReader {
+	return consensus.Blockchain()
 }
 
 func (consensus *Consensus) GetReadySignal() chan ProposalType {
 	return consensus.readySignal
 }
 
+func (consensus *Consensus) ReadySignal(p ProposalType) {
+	consensus.readySignal <- p
+}
+
 func (consensus *Consensus) CommitSigChannel() chan []byte {
 	return consensus.commitSigChannel
 }
@@ -155,6 +162,11 @@ func (consensus *Consensus) GetCommitSigChannel() chan []byte {
 	return consensus.commitSigChannel
 }
 
+// Beaconchain returns the beaconchain.
+func (consensus *Consensus) Beaconchain() core.BlockChain {
+	return consensus.registry.GetBeaconchain()
+}
+
 // VerifyBlock is a function used to verify the block and keep trace of verified blocks.
 func (consensus *Consensus) verifyBlock(block *types.Block) error {
 	if !consensus.FBFTLog.IsBlockVerified(block.Hash()) {
@@ -232,8 +244,8 @@ func (consensus *Consensus) getConsensusLeaderPrivateKey() (*bls.PrivateKeyWrapp
 	return consensus.getLeaderPrivateKey(consensus.LeaderPubKey.Object)
 }
 
-// SetBlockVerifier sets the block verifier
-func (consensus *Consensus) SetBlockVerifier(verifier VerifyBlockFunc) {
+// setBlockVerifier sets the block verifier
+func (consensus *Consensus) setBlockVerifier(verifier VerifyBlockFunc) {
 	consensus.mutex.Lock()
 	defer consensus.mutex.Unlock()
 	consensus.BlockVerifier = verifier
@@ -288,7 +300,6 @@ func New(
 	// the blockchain during initialization as it was
 	// displayed on explorer as Height right now
 	consensus.SetCurBlockViewID(0)
-	consensus.ShardID = shard
 	consensus.SlashChan = make(chan slash.Record)
 	consensus.readySignal = make(chan ProposalType)
 	consensus.commitSigChannel = make(chan []byte)
@@ -297,6 +308,8 @@ func New(
 	consensus.IgnoreViewIDCheck = abool.NewBool(false)
 	// Make Sure Verifier is not null
 	consensus.vc = newViewChange()
+	// TODO: reference to blockchain/beaconchain should be removed.
+	consensus.setBlockVerifier(VerifyNewBlock(registry.GetWebHooks(), consensus.Blockchain(), consensus.Beaconchain()))
 
 	// init prometheus metrics
 	initMetrics()
diff --git a/consensus/consensus_service.go b/consensus/consensus_service.go
index e8d7e1645..2b80ecd8b 100644
--- a/consensus/consensus_service.go
+++ b/consensus/consensus_service.go
@@ -5,9 +5,11 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/harmony-one/harmony/core"
 	"github.com/harmony-one/harmony/core/types"
 	"github.com/harmony-one/harmony/crypto/bls"
 	"github.com/harmony-one/harmony/multibls"
+	"github.com/harmony-one/harmony/webhooks"
 
 	"github.com/ethereum/go-ethereum/common"
 	protobuf "github.com/golang/protobuf/proto"
@@ -590,7 +592,7 @@ func (consensus *Consensus) selfCommit(payload []byte) error {
 	consensus.switchPhase("selfCommit", FBFTCommit)
 	consensus.aggregatedPrepareSig = aggSig
 	consensus.prepareBitmap = mask
-	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain(),
+	commitPayload := signature.ConstructCommitPayload(consensus.ChainReader().Config(),
 		block.Epoch(), block.Hash(), block.NumberU64(), block.Header().ViewID().Uint64())
 	for i, key := range consensus.priKey {
 		if err := consensus.commitBitmap.SetKey(key.Pub.Bytes, true); err != nil {
@@ -658,3 +660,35 @@ func (consensus *Consensus) getLogger() *zerolog.Logger {
 		Logger()
 	return &logger
 }
+
+// VerifyNewBlock is called by consensus participants to verify the block (account model) they are
+// running consensus on.
+func VerifyNewBlock(hooks *webhooks.Hooks, blockChain core.BlockChain, beaconChain core.BlockChain) func(*types.Block) error {
+	return func(newBlock *types.Block) error {
+		if err := blockChain.ValidateNewBlock(newBlock, beaconChain); err != nil {
+			if hooks := hooks; hooks != nil {
+				if p := hooks.ProtocolIssues; p != nil {
+					url := p.OnCannotCommit
+					go func() {
+						webhooks.DoPost(url, map[string]interface{}{
+							"bad-header": newBlock.Header(),
+							"reason":     err.Error(),
+						})
+					}()
+				}
+			}
+			utils.Logger().Error().
+				Str("blockHash", newBlock.Hash().Hex()).
+				Int("numTx", len(newBlock.Transactions())).
+				Int("numStakingTx", len(newBlock.StakingTransactions())).
+				Err(err).
+				Msg("[VerifyNewBlock] Cannot Verify New Block!!!")
+			return errors.Errorf(
+				"[VerifyNewBlock] Cannot Verify New Block!!! block-hash %s txn-count %d",
+				newBlock.Hash().Hex(),
+				len(newBlock.Transactions()),
+			)
+		}
+		return nil
+	}
+}
diff --git a/consensus/consensus_service_test.go b/consensus/consensus_service_test.go
index dd2fca7ab..00b8bd346 100644
--- a/consensus/consensus_service_test.go
+++ b/consensus/consensus_service_test.go
@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/harmony-one/harmony/crypto/bls"
+	"github.com/harmony-one/harmony/internal/registry"
 
 	msg_pb "github.com/harmony-one/harmony/api/proto/message"
 	"github.com/harmony-one/harmony/consensus/quorum"
@@ -25,7 +26,8 @@ func TestSignAndMarshalConsensusMessage(t *testing.T) {
 	}
 	decider := quorum.NewDecider(quorum.SuperMajorityVote, shard.BeaconChainShardID)
 	blsPriKey := bls.RandPrivateKey()
-	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), nil, decider, 3, false)
+	reg := registry.New()
+	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), reg, decider, 3, false)
 	if err != nil {
 		t.Fatalf("Cannot craeate consensus: %v", err)
 	}
@@ -57,8 +59,9 @@ func TestSetViewID(t *testing.T) {
 		quorum.SuperMajorityVote, shard.BeaconChainShardID,
 	)
 	blsPriKey := bls.RandPrivateKey()
+	reg := registry.New()
 	consensus, err := New(
-		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), nil, decider, 3, false,
+		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), reg, decider, 3, false,
 	)
 	if err != nil {
 		t.Fatalf("Cannot craeate consensus: %v", err)
diff --git a/consensus/consensus_v2.go b/consensus/consensus_v2.go
index 41d5b2d26..262cbe37d 100644
--- a/consensus/consensus_v2.go
+++ b/consensus/consensus_v2.go
@@ -608,7 +608,7 @@ func (consensus *Consensus) verifyLastCommitSig(lastCommitSig []byte, blk *types
 	}
 	aggPubKey := consensus.commitBitmap.AggregatePublic
 
-	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain(),
+	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain().Config(),
 		blk.Epoch(), blk.Hash(), blk.NumberU64(), blk.Header().ViewID().Uint64())
 
 	if !aggSig.VerifyHash(aggPubKey, commitPayload) {
diff --git a/consensus/construct_test.go b/consensus/construct_test.go
index 1add32219..7188ebea6 100644
--- a/consensus/construct_test.go
+++ b/consensus/construct_test.go
@@ -10,6 +10,7 @@ import (
 	msg_pb "github.com/harmony-one/harmony/api/proto/message"
 	"github.com/harmony-one/harmony/consensus/quorum"
 	"github.com/harmony-one/harmony/crypto/bls"
+	"github.com/harmony-one/harmony/internal/registry"
 	"github.com/harmony-one/harmony/internal/utils"
 	"github.com/harmony-one/harmony/multibls"
 	"github.com/harmony-one/harmony/p2p"
@@ -31,7 +32,8 @@ func TestConstructAnnounceMessage(test *testing.T) {
 		quorum.SuperMajorityVote, shard.BeaconChainShardID,
 	)
 	blsPriKey := bls.RandPrivateKey()
-	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), nil, decider, 3, false)
+	reg := registry.New()
+	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), reg, decider, 3, false)
 	if err != nil {
 		test.Fatalf("Cannot create consensus: %v", err)
 	}
@@ -63,7 +65,8 @@ func TestConstructPreparedMessage(test *testing.T) {
 		quorum.SuperMajorityVote, shard.BeaconChainShardID,
 	)
 	blsPriKey := bls.RandPrivateKey()
-	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), nil, decider, 3, false)
+	reg := registry.New()
+	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), reg, decider, 3, false)
 	if err != nil {
 		test.Fatalf("Cannot craeate consensus: %v", err)
 	}
@@ -143,7 +146,7 @@ func TestConstructPrepareMessage(test *testing.T) {
 	)
 
 	consensus, err := New(
-		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey1), nil, decider, 3, false,
+		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey1), registry.New(), decider, 3, false,
 	)
 	if err != nil {
 		test.Fatalf("Cannot create consensus: %v", err)
@@ -234,7 +237,7 @@ func TestConstructCommitMessage(test *testing.T) {
 		quorum.SuperMajorityStake, shard.BeaconChainShardID,
 	)
 
-	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey1), nil, decider, 3, false)
+	consensus, err := New(host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey1), registry.New(), decider, 3, false)
 	if err != nil {
 		test.Fatalf("Cannot create consensus: %v", err)
 	}
@@ -316,7 +319,7 @@ func TestPopulateMessageFields(t *testing.T) {
 		quorum.SuperMajorityVote, shard.BeaconChainShardID,
 	)
 	consensus, err := New(
-		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), nil, decider, 3, false,
+		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsPriKey), registry.New(), decider, 3, false,
 	)
 	if err != nil {
 		t.Fatalf("Cannot craeate consensus: %v", err)
diff --git a/consensus/downloader.go b/consensus/downloader.go
index 8442ed534..26755bbd2 100644
--- a/consensus/downloader.go
+++ b/consensus/downloader.go
@@ -114,7 +114,14 @@ func (consensus *Consensus) spinUpStateSync() {
 			v.Stop()
 		}
 	} else {
-		consensus.spinLegacyStateSync()
+		select {
+		case consensus.BlockNumLowChan <- struct{}{}:
+			consensus.current.SetMode(Syncing)
+			for _, v := range consensus.consensusTimeout {
+				v.Stop()
+			}
+		default:
+		}
 	}
 }
 
diff --git a/consensus/leader.go b/consensus/leader.go
index 2f7766e19..1b10c9608 100644
--- a/consensus/leader.go
+++ b/consensus/leader.go
@@ -235,7 +235,7 @@ func (consensus *Consensus) onCommit(recvMsg *FBFTMessage) {
 			Msg("[OnCommit] Failed finding a matching block for committed message")
 		return
 	}
-	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain(),
+	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain().Config(),
 		blockObj.Epoch(), blockObj.Hash(), blockObj.NumberU64(), blockObj.Header().ViewID().Uint64())
 	logger = logger.With().
 		Uint64("MsgViewID", recvMsg.ViewID).
diff --git a/consensus/signature/signature.go b/consensus/signature/signature.go
index 3c419b03b..20226a381 100644
--- a/consensus/signature/signature.go
+++ b/consensus/signature/signature.go
@@ -8,18 +8,14 @@ import (
 	"github.com/harmony-one/harmony/internal/params"
 )
 
-type signatureChainReader interface {
-	Config() *params.ChainConfig
-}
-
 // ConstructCommitPayload returns the commit payload for consensus signatures.
 func ConstructCommitPayload(
-	chain signatureChainReader, epoch *big.Int, blockHash common.Hash, blockNum, viewID uint64,
+	config *params.ChainConfig, epoch *big.Int, blockHash common.Hash, blockNum, viewID uint64,
 ) []byte {
 	blockNumBytes := make([]byte, 8)
 	binary.LittleEndian.PutUint64(blockNumBytes, blockNum)
 	commitPayload := append(blockNumBytes, blockHash.Bytes()...)
-	if !chain.Config().IsStaking(epoch) {
+	if !config.IsStaking(epoch) {
 		return commitPayload
 	}
 	viewIDBytes := make([]byte, 8)
diff --git a/consensus/threshold.go b/consensus/threshold.go
index ecb54980a..11e65709e 100644
--- a/consensus/threshold.go
+++ b/consensus/threshold.go
@@ -46,7 +46,7 @@ func (consensus *Consensus) didReachPrepareQuorum() error {
 			Msg("[didReachPrepareQuorum] Unparseable block data")
 		return err
 	}
-	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain(),
+	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain().Config(),
 		blockObj.Epoch(), blockObj.Hash(), blockObj.NumberU64(), blockObj.Header().ViewID().Uint64())
 
 	// so by this point, everyone has committed to the blockhash of this block
diff --git a/consensus/validator.go b/consensus/validator.go
index 92008a91e..c67765cc8 100644
--- a/consensus/validator.go
+++ b/consensus/validator.go
@@ -164,7 +164,7 @@ func (consensus *Consensus) sendCommitMessages(blockObj *types.Block) {
 	priKeys := consensus.getPriKeysInCommittee()
 
 	// Sign commit signature on the received block and construct the p2p messages
-	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain(),
+	commitPayload := signature.ConstructCommitPayload(consensus.Blockchain().Config(),
 		blockObj.Epoch(), blockObj.Hash(), blockObj.NumberU64(), blockObj.Header().ViewID().Uint64())
 
 	p2pMsgs := consensus.constructP2pMessages(msg_pb.MessageType_COMMIT, commitPayload, priKeys)
diff --git a/core/blockchain.go b/core/blockchain.go
index 8afe622c7..facb9ed2c 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -255,13 +255,6 @@ type BlockChain interface {
 	ReadValidatorStats(
 		addr common.Address,
 	) (*types2.ValidatorStats, error)
-	// UpdateValidatorVotingPower writes the voting power for the committees.
-	UpdateValidatorVotingPower(
-		batch rawdb.DatabaseWriter,
-		block *types.Block,
-		newEpochSuperCommittee, currentEpochSuperCommittee *shard.State,
-		state *state.DB,
-	) (map[common.Address]*types2.ValidatorStats, error)
 	// ComputeAndUpdateAPR ...
 	ComputeAndUpdateAPR(
 		block *types.Block, now *big.Int,
diff --git a/core/blockchain_impl.go b/core/blockchain_impl.go
index f1d096842..4774b795f 100644
--- a/core/blockchain_impl.go
+++ b/core/blockchain_impl.go
@@ -2654,8 +2654,8 @@ func (bc *BlockChainImpl) ReadValidatorStats(
 	return rawdb.ReadValidatorStats(bc.db, addr)
 }
 
-func (bc *BlockChainImpl) UpdateValidatorVotingPower(
-	batch rawdb.DatabaseWriter,
+func UpdateValidatorVotingPower(
+	bc BlockChain,
 	block *types.Block,
 	newEpochSuperCommittee, currentEpochSuperCommittee *shard.State,
 	state *state.DB,
@@ -2681,7 +2681,7 @@ func (bc *BlockChainImpl) UpdateValidatorVotingPower(
 			// 	bc.db, currentValidator, currentEpochSuperCommittee.Epoch,
 			// )
 			// rawdb.DeleteValidatorStats(bc.db, currentValidator)
-			stats, err := rawdb.ReadValidatorStats(bc.db, currentValidator)
+			stats, err := rawdb.ReadValidatorStats(bc.ChainDb(), currentValidator)
 			if err != nil {
 				stats = staking.NewEmptyStats()
 			}
@@ -2731,7 +2731,7 @@ func (bc *BlockChainImpl) UpdateValidatorVotingPower(
 
 	networkWide := votepower.AggregateRosters(rosters)
 	for key, value := range networkWide {
-		stats, err := rawdb.ReadValidatorStats(bc.db, key)
+		stats, err := rawdb.ReadValidatorStats(bc.ChainDb(), key)
 		if err != nil {
 			stats = staking.NewEmptyStats()
 		}
diff --git a/core/offchain.go b/core/offchain.go
index 3f08b4f81..6ce7794e4 100644
--- a/core/offchain.go
+++ b/core/offchain.go
@@ -205,8 +205,8 @@ func (bc *BlockChainImpl) CommitOffChainData(
 		if shardState, err := shard.DecodeWrapper(
 			header.ShardState(),
 		); err == nil {
-			if stats, err := bc.UpdateValidatorVotingPower(
-				batch, block, shardState, currentSuperCommittee, state,
+			if stats, err := UpdateValidatorVotingPower(
+				bc, block, shardState, currentSuperCommittee, state,
 			); err != nil {
 				utils.Logger().
 					Err(err).
diff --git a/internal/chain/engine.go b/internal/chain/engine.go
index 6e018dccf..71bb0d305 100644
--- a/internal/chain/engine.go
+++ b/internal/chain/engine.go
@@ -632,7 +632,7 @@ func payloadArgsFromCrossLink(cl types.CrossLink) payloadArgs {
 }
 
 func (args payloadArgs) constructPayload(chain engine.ChainReader) []byte {
-	return signature.ConstructCommitPayload(chain, args.epoch, args.blockHash, args.number, args.viewID)
+	return signature.ConstructCommitPayload(chain.Config(), args.epoch, args.blockHash, args.number, args.viewID)
 }
 
 type sigArgs struct {
diff --git a/internal/chain/engine_test.go b/internal/chain/engine_test.go
index 5a842088c..067b265ca 100644
--- a/internal/chain/engine_test.go
+++ b/internal/chain/engine_test.go
@@ -275,7 +275,7 @@ func (kp blsKeyPair) Pub() bls.SerializedPublicKey {
 
 func (kp blsKeyPair) Sign(block *types.Block) []byte {
 	chain := &fakeBlockChain{config: *params.LocalnetChainConfig}
-	msg := consensus_sig.ConstructCommitPayload(chain, block.Epoch(), block.Hash(),
+	msg := consensus_sig.ConstructCommitPayload(chain.Config(), block.Epoch(), block.Hash(),
 		block.Number().Uint64(), block.Header().ViewID().Uint64())
 
 	sig := kp.pri.SignHash(msg)
diff --git a/internal/registry/registry.go b/internal/registry/registry.go
index 98b69a3ef..448e14866 100644
--- a/internal/registry/registry.go
+++ b/internal/registry/registry.go
@@ -4,13 +4,16 @@ import (
 	"sync"
 
 	"github.com/harmony-one/harmony/core"
+	"github.com/harmony-one/harmony/webhooks"
 )
 
 // Registry consolidates services at one place.
 type Registry struct {
-	mu         sync.Mutex
-	blockchain core.BlockChain
-	txPool     *core.TxPool
+	mu          sync.Mutex
+	blockchain  core.BlockChain
+	beaconchain core.BlockChain
+	webHooks    *webhooks.Hooks
+	txPool      *core.TxPool
 }
 
 // New creates a new registry.
@@ -35,6 +38,40 @@ func (r *Registry) GetBlockchain() core.BlockChain {
 	return r.blockchain
 }
 
+// SetBeaconchain sets the beaconchain to registry.
+func (r *Registry) SetBeaconchain(bc core.BlockChain) *Registry {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	r.beaconchain = bc
+	return r
+}
+
+// GetBeaconchain gets the beaconchain from registry.
+func (r *Registry) GetBeaconchain() core.BlockChain {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	return r.beaconchain
+}
+
+// SetWebHooks sets the webhooks to registry.
+func (r *Registry) SetWebHooks(hooks *webhooks.Hooks) *Registry {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	r.webHooks = hooks
+	return r
+}
+
+// GetWebHooks gets the webhooks from registry.
+func (r *Registry) GetWebHooks() *webhooks.Hooks {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	return r.webHooks
+}
+
 // SetTxPool sets the txpool to registry.
 func (r *Registry) SetTxPool(txPool *core.TxPool) *Registry {
 	r.mu.Lock()
diff --git a/node/node_explorer.go b/node/node_explorer.go
index d1c78d612..0dd731976 100644
--- a/node/node_explorer.go
+++ b/node/node_explorer.go
@@ -68,7 +68,7 @@ func (node *Node) explorerMessageHandler(ctx context.Context, msg *msg_pb.Messag
 			return errBlockBeforeCommit
 		}
 
-		commitPayload := signature.ConstructCommitPayload(node.Blockchain(),
+		commitPayload := signature.ConstructCommitPayload(node.Blockchain().Config(),
 			block.Epoch(), block.Hash(), block.Number().Uint64(), block.Header().ViewID().Uint64())
 		if !aggSig.VerifyHash(mask.AggregatePublic, commitPayload) {
 			utils.Logger().
diff --git a/node/node_handler.go b/node/node_handler.go
index acc4afc26..a7e496e98 100644
--- a/node/node_handler.go
+++ b/node/node_handler.go
@@ -25,7 +25,6 @@ import (
 	"github.com/harmony-one/harmony/staking/slash"
 	staking "github.com/harmony-one/harmony/staking/types"
 	"github.com/harmony-one/harmony/webhooks"
-	"github.com/pkg/errors"
 )
 
 const p2pMsgPrefixSize = 5
@@ -328,38 +327,6 @@ func getCrosslinkHeadersForShards(shardChain core.BlockChain, curBlock *types.Bl
 	return headers, nil
 }
 
-// VerifyNewBlock is called by consensus participants to verify the block (account model) they are
-// running consensus on.
-func VerifyNewBlock(nodeConfig *nodeconfig.ConfigType, blockChain core.BlockChain, beaconChain core.BlockChain) func(*types.Block) error {
-	return func(newBlock *types.Block) error {
-		if err := blockChain.ValidateNewBlock(newBlock, beaconChain); err != nil {
-			if hooks := nodeConfig.WebHooks.Hooks; hooks != nil {
-				if p := hooks.ProtocolIssues; p != nil {
-					url := p.OnCannotCommit
-					go func() {
-						webhooks.DoPost(url, map[string]interface{}{
-							"bad-header": newBlock.Header(),
-							"reason":     err.Error(),
-						})
-					}()
-				}
-			}
-			utils.Logger().Error().
-				Str("blockHash", newBlock.Hash().Hex()).
-				Int("numTx", len(newBlock.Transactions())).
-				Int("numStakingTx", len(newBlock.StakingTransactions())).
-				Err(err).
-				Msg("[VerifyNewBlock] Cannot Verify New Block!!!")
-			return errors.Errorf(
-				"[VerifyNewBlock] Cannot Verify New Block!!! block-hash %s txn-count %d",
-				newBlock.Hash().Hex(),
-				len(newBlock.Transactions()),
-			)
-		}
-		return nil
-	}
-}
-
 // PostConsensusProcessing is called by consensus participants, after consensus is done, to:
 // 1. [leader] send new block to the client
 // 2. [leader] send cross shard tx receipts to destination shard
@@ -373,6 +340,7 @@ func (node *Node) PostConsensusProcessing(newBlock *types.Block) error {
 		node.BroadcastCXReceipts(newBlock)
 	} else {
 		if node.Consensus.Mode() != consensus.Listening {
+			numSignatures := node.Consensus.NumSignaturesIncludedInBlock(newBlock)
 			utils.Logger().Info().
 				Uint64("blockNum", newBlock.NumberU64()).
 				Uint64("epochNum", newBlock.Epoch().Uint64()).
@@ -380,11 +348,10 @@ func (node *Node) PostConsensusProcessing(newBlock *types.Block) error {
 				Str("blockHash", newBlock.Hash().String()).
 				Int("numTxns", len(newBlock.Transactions())).
 				Int("numStakingTxns", len(newBlock.StakingTransactions())).
-				Uint32("numSignatures", node.Consensus.NumSignaturesIncludedInBlock(newBlock)).
+				Uint32("numSignatures", numSignatures).
 				Msg("BINGO !!! Reached Consensus")
 
-			numSig := float64(node.Consensus.NumSignaturesIncludedInBlock(newBlock))
-			node.Consensus.UpdateValidatorMetrics(numSig, float64(newBlock.NumberU64()))
+			node.Consensus.UpdateValidatorMetrics(float64(numSignatures), float64(newBlock.NumberU64()))
 
 			// 1% of the validator also need to do broadcasting
 			rnd := rand.Intn(100)
diff --git a/node/node_handler_test.go b/node/node_handler_test.go
index 25d966f46..3de291839 100644
--- a/node/node_handler_test.go
+++ b/node/node_handler_test.go
@@ -103,7 +103,7 @@ func TestVerifyNewBlock(t *testing.T) {
 		t.Fatal("cannot get blockchain")
 	}
 	reg := registry.New().SetBlockchain(blockchain)
-	consensus, err := consensus.New(
+	consensusObj, err := consensus.New(
 		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsKey), reg, decider, 3, false,
 	)
 	if err != nil {
@@ -112,7 +112,7 @@ func TestVerifyNewBlock(t *testing.T) {
 	archiveMode := make(map[uint32]bool)
 	archiveMode[0] = true
 	archiveMode[1] = false
-	node := New(host, consensus, engine, collection, nil, nil, nil, archiveMode, nil, reg)
+	node := New(host, consensusObj, engine, collection, nil, nil, nil, archiveMode, nil, reg)
 
 	txs := make(map[common.Address]types.Transactions)
 	stks := staking.StakingTransactions{}
@@ -129,7 +129,7 @@ func TestVerifyNewBlock(t *testing.T) {
 
 	// work around vrf verification as it's tested in another test.
 	node.Blockchain().Config().VRFEpoch = big.NewInt(2)
-	if err := VerifyNewBlock(nil, node.Blockchain(), node.Beaconchain())(block); err != nil {
+	if err := consensus.VerifyNewBlock(nil, node.Blockchain(), node.Beaconchain())(block); err != nil {
 		t.Error("New block is not verified successfully:", err)
 	}
 }
diff --git a/node/node_newblock_test.go b/node/node_newblock_test.go
index 492175b1d..39affacab 100644
--- a/node/node_newblock_test.go
+++ b/node/node_newblock_test.go
@@ -46,14 +46,15 @@ func TestFinalizeNewBlockAsync(t *testing.T) {
 	decider := quorum.NewDecider(
 		quorum.SuperMajorityVote, shard.BeaconChainShardID,
 	)
-	consensus, err := consensus.New(
-		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsKey), nil, decider, 3, false,
+	reg := registry.New().SetBlockchain(blockchain).SetBeaconchain(blockchain)
+	consensusObj, err := consensus.New(
+		host, shard.BeaconChainShardID, multibls.GetPrivateKeys(blsKey), reg, decider, 3, false,
 	)
 	if err != nil {
 		t.Fatalf("Cannot craeate consensus: %v", err)
 	}
 
-	node := New(host, consensus, engine, collection, nil, nil, nil, nil, nil, registry.New().SetBlockchain(blockchain))
+	node := New(host, consensusObj, engine, collection, nil, nil, nil, nil, nil, registry.New().SetBlockchain(blockchain))
 
 	node.Worker.UpdateCurrent()
 
@@ -71,7 +72,7 @@ func TestFinalizeNewBlockAsync(t *testing.T) {
 		commitSigs, func() uint64 { return 0 }, common.Address{}, nil, nil,
 	)
 
-	if err := VerifyNewBlock(nil, blockchain, nil)(block); err != nil {
+	if err := consensus.VerifyNewBlock(nil, blockchain, nil)(block); err != nil {
 		t.Error("New block is not verified successfully:", err)
 	}
 
diff --git a/staking/slash/double-sign.go b/staking/slash/double-sign.go
index 6c871f992..aaaea0130 100644
--- a/staking/slash/double-sign.go
+++ b/staking/slash/double-sign.go
@@ -248,7 +248,7 @@ func Verify(
 			publicKey.Add(publicKeyObj)
 		}
 		// slash verification only happens in staking era, therefore want commit payload for staking epoch
-		commitPayload := consensus_sig.ConstructCommitPayload(chain,
+		commitPayload := consensus_sig.ConstructCommitPayload(chain.Config(),
 			candidate.Evidence.Epoch, ballot.BlockHeaderHash, candidate.Evidence.Height, candidate.Evidence.ViewID)
 		utils.Logger().Debug().
 			Uint64("epoch", candidate.Evidence.Epoch.Uint64()).
diff --git a/staking/slash/double-sign_test.go b/staking/slash/double-sign_test.go
index 470a8ae1d..7bed53b94 100644
--- a/staking/slash/double-sign_test.go
+++ b/staking/slash/double-sign_test.go
@@ -1151,8 +1151,7 @@ func (kp blsKeyPair) Pub() bls.SerializedPublicKey {
 }
 
 func (kp blsKeyPair) Sign(block *types.Block) []byte {
-	chain := &fakeBlockChain{config: *params.LocalnetChainConfig}
-	msg := consensus_sig.ConstructCommitPayload(chain, block.Epoch(), block.Hash(),
+	msg := consensus_sig.ConstructCommitPayload(params.LocalnetChainConfig, block.Epoch(), block.Hash(),
 		block.Number().Uint64(), block.Header().ViewID().Uint64())
 
 	sig := kp.pri.SignHash(msg)
diff --git a/staking/verify/verify.go b/staking/verify/verify.go
index 38783d4db..efc7e18ce 100644
--- a/staking/verify/verify.go
+++ b/staking/verify/verify.go
@@ -1,54 +1 @@
 package verify
-
-import (
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/harmony-one/bls/ffi/go/bls"
-	"github.com/harmony-one/harmony/consensus/quorum"
-	"github.com/harmony-one/harmony/consensus/signature"
-	"github.com/harmony-one/harmony/core"
-	bls_cosi "github.com/harmony-one/harmony/crypto/bls"
-	"github.com/harmony-one/harmony/shard"
-	"github.com/pkg/errors"
-)
-
-var (
-	errQuorumVerifyAggSign = errors.New("insufficient voting power to verify aggregate sig")
-	errAggregateSigFail    = errors.New("could not verify hash of aggregate signature")
-)
-
-// AggregateSigForCommittee ..
-func AggregateSigForCommittee(
-	chain core.BlockChain,
-	committee *shard.Committee,
-	decider quorum.Decider,
-	aggSignature *bls.Sign,
-	hash common.Hash,
-	blockNum, viewID uint64,
-	epoch *big.Int,
-	bitmap []byte,
-) error {
-	committerKeys, err := committee.BLSPublicKeys()
-	if err != nil {
-		return err
-	}
-	mask, err := bls_cosi.NewMask(committerKeys, nil)
-	if err != nil {
-		return err
-	}
-	if err := mask.SetMask(bitmap); err != nil {
-		return err
-	}
-
-	if !decider.IsQuorumAchievedByMask(mask) {
-		return errQuorumVerifyAggSign
-	}
-
-	commitPayload := signature.ConstructCommitPayload(chain, epoch, hash, blockNum, viewID)
-	if !aggSignature.VerifyHash(mask.AggregatePublic, commitPayload) {
-		return errAggregateSigFail
-	}
-
-	return nil
-}