diff --git a/evidence/pool_test.go b/evidence/pool_test.go
index 8f696a640..38b0b8f86 100644
--- a/evidence/pool_test.go
+++ b/evidence/pool_test.go
@@ -6,6 +6,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/line/ostracon/crypto"
 	"github.com/line/ostracon/crypto/bls"
 	"github.com/line/ostracon/crypto/composite"
 	"github.com/line/ostracon/crypto/ed25519"
@@ -325,12 +326,11 @@ func TestLightClientAttackEvidenceLifecycle(t *testing.T) {
 func TestRecoverPendingEvidence(t *testing.T) {
 	height := int64(10)
 	val := types.NewMockPV(types.PrivKeyComposite) // TODO 🏺 need to test by all key types
-	valAddress := val.PrivKey.PubKey().Address()
 	evidenceDB := dbm.NewMemDB()
 	stateStore := initializeValidatorState(val, height)
 	state, err := stateStore.Load()
 	require.NoError(t, err)
-	blockStore := initializeBlockStore(dbm.NewMemDB(), state, valAddress)
+	blockStore := initializeBlockStore(dbm.NewMemDB(), state, val.PrivKey)
 	// create previous pool and populate it
 	pool, err := evidence.NewPool(evidenceDB, stateStore, blockStore)
 	require.NoError(t, err)
@@ -424,13 +424,15 @@ func initializeValidatorState(privVal types.PrivValidator, height int64) sm.Stor
 
 // initializeBlockStore creates a block storage and populates it w/ a dummy
 // block at +height+.
-func initializeBlockStore(db dbm.DB, state sm.State, valAddr []byte) *store.BlockStore {
+func initializeBlockStore(db dbm.DB, state sm.State, valPrivkey crypto.PrivKey) *store.BlockStore {
 	blockStore := store.NewBlockStore(db)
+	valAddr := valPrivkey.PubKey().Address()
 
 	for i := int64(1); i <= state.LastBlockHeight; i++ {
 		round := int32(0)
 		lastCommit := makeCommit(i-1, valAddr)
-		proof := state.MakeHashMessage(round)
+		message := state.MakeHashMessage(round)
+		proof, _ := valPrivkey.VRFProve(message)
 		block, _ := state.MakeBlock(i, []types.Tx{}, lastCommit, nil,
 			state.Validators.SelectProposer(proof, i, round).Address, round, proof)
 		block.Header.Time = defaultEvidenceTime.Add(time.Duration(i) * time.Minute)
@@ -457,11 +459,10 @@ func makeCommit(height int64, valAddr []byte) *types.Commit {
 
 func defaultTestPool(height int64) (*evidence.Pool, types.MockPV) {
 	val := types.NewMockPV(types.PrivKeyComposite) // TODO 🏺 need to test by all key types
-	valAddress := val.PrivKey.PubKey().Address()
 	evidenceDB := dbm.NewMemDB()
 	stateStore := initializeValidatorState(val, height)
 	state, _ := stateStore.Load()
-	blockStore := initializeBlockStore(dbm.NewMemDB(), state, valAddress)
+	blockStore := initializeBlockStore(dbm.NewMemDB(), state, val.PrivKey)
 	pool, err := evidence.NewPool(evidenceDB, stateStore, blockStore)
 	if err != nil {
 		panic("test evidence pool could not be created")
diff --git a/evidence/verify_test.go b/evidence/verify_test.go
index d8a3b5fbc..44d81a3e2 100644
--- a/evidence/verify_test.go
+++ b/evidence/verify_test.go
@@ -8,8 +8,6 @@ import (
 
 	"github.com/line/ostracon/light"
 
-	"github.com/coniks-sys/coniks-go/crypto/vrf"
-
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
@@ -17,6 +15,7 @@ import (
 
 	"github.com/line/ostracon/crypto"
 	"github.com/line/ostracon/crypto/tmhash"
+	"github.com/line/ostracon/crypto/vrf"
 	"github.com/line/ostracon/evidence"
 	"github.com/line/ostracon/evidence/mocks"
 	"github.com/line/ostracon/libs/log"
@@ -735,7 +734,7 @@ func makeHeaderRandom(height int64) *types.Header {
 		LastResultsHash:    crypto.CRandBytes(tmhash.Size),
 		EvidenceHash:       crypto.CRandBytes(tmhash.Size),
 		ProposerAddress:    crypto.CRandBytes(crypto.AddressSize),
-		Proof:              crypto.CRandBytes(vrf.ProofSize),
+		Proof:              crypto.CRandBytes(vrf.ProofLength()),
 	}
 }
 
diff --git a/types/block_test.go b/types/block_test.go
index e0163a929..9c0535b1b 100644
--- a/types/block_test.go
+++ b/types/block_test.go
@@ -518,8 +518,8 @@ func TestHeaderHash(t *testing.T) {
 			EvidenceHash:       tmhash.Sum([]byte("evidence_hash")),
 			ProposerAddress:    crypto.AddressHash([]byte("proposer_address")),
 			Round:              1,
-			Proof:              tmhash.Sum([]byte("proof")),
-		}, hexBytesFromString("0368E6F15B6B7BC9DC5B10F36F37D6F867E132A22333F083A11290324274E183")},
+			Proof:              make([]byte, vrf.ProofLength()),
+		}, hexBytesFromString("5616282392957326AF5D014F227B82C9EB1081CD7FB85C8BAE1476E2E3BF77F8")},
 		{"nil header yields nil", nil, nil},
 		{"nil VotersHash yields nil", &Header{
 			Version:            tmversion.Consensus{Block: 1, App: 2},
@@ -537,7 +537,7 @@ func TestHeaderHash(t *testing.T) {
 			EvidenceHash:       tmhash.Sum([]byte("evidence_hash")),
 			ProposerAddress:    crypto.AddressHash([]byte("proposer_address")),
 			Round:              1,
-			Proof:              tmhash.Sum([]byte("proof")),
+			Proof:              make([]byte, vrf.ProofLength()),
 		}, nil},
 	}
 	for _, tc := range testCases {