diff --git a/prover/db/db.go b/prover/db/db.go
deleted file mode 100644
index a86ae9ae0..000000000
--- a/prover/db/db.go
+++ /dev/null
@@ -1,52 +0,0 @@
-package db
-
-import (
-	"bytes"
-	"math/big"
-	"strconv"
-
-	"github.com/ethereum/go-ethereum/common"
-)
-
-var (
-	blockKeyPrefix = "block"
-	separator      = "++"
-)
-
-// SignedBlockData is the data stored in the db for a signed block
-type SignedBlockData struct {
-	BlockID   *big.Int
-	BlockHash common.Hash
-	Signature string
-}
-
-// BuildBlockKey will build a block key for a signed block
-func BuildBlockKey(blockTimestamp uint64, blockNumber uint64) []byte {
-	return bytes.Join(
-		[][]byte{
-			[]byte(blockKeyPrefix),
-			[]byte(strconv.Itoa(int(blockTimestamp))),
-			[]byte(strconv.Itoa(int(blockNumber))),
-		}, []byte(separator))
-}
-
-// BuildBlockValue will build a block value for a signed block
-func BuildBlockValue(hash []byte, signature []byte, blockID *big.Int) []byte {
-	return bytes.Join(
-		[][]byte{
-			hash,
-			signature,
-			blockID.Bytes(),
-		}, []byte(separator))
-}
-
-// SignedBlockDataFromValue will build a SignedBlockData from a value
-func SignedBlockDataFromValue(val []byte) SignedBlockData {
-	v := bytes.Split(val, []byte(separator))
-
-	return SignedBlockData{
-		BlockID:   new(big.Int).SetBytes(v[2]),
-		BlockHash: common.BytesToHash(v[0]),
-		Signature: common.Bytes2Hex(v[1]),
-	}
-}
diff --git a/prover/db/db_test.go b/prover/db/db_test.go
deleted file mode 100644
index edbf0b98f..000000000
--- a/prover/db/db_test.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package db
-
-import (
-	"bytes"
-	"math/big"
-	"testing"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/stretchr/testify/assert"
-)
-
-func Test_BuildBlockKey(t *testing.T) {
-	assert.Equal(t, []byte("block++1++300"), BuildBlockKey(1, 300))
-}
-
-func Test_BuildBlockValue(t *testing.T) {
-	v := BuildBlockValue([]byte("hash"), []byte("sig"), big.NewInt(1))
-	spl := bytes.Split(v, []byte(separator))
-	assert.Equal(t, "hash", string(spl[0]))
-	assert.Equal(t, "sig", string(spl[1]))
-	assert.Equal(t, uint64(1), new(big.Int).SetBytes(spl[2]).Uint64())
-}
-
-func Test_SignedBlockDataFromValue(t *testing.T) {
-	hash := common.HexToHash("1ada5c5ba58cfca1fbcd4531f4132f8cfef736c2cf40209a1315c489717dfc49")
-	// nolint: lll
-	sig := common.Hex2Bytes("789a80053e4927d0a898db8e065e948f5cf086e32f9ccaa54c1908e22ac430c62621578113ddbb62d509bf6049b8fb544ab06d36f916685a2eb8e57ffadde02301")
-
-	v := BuildBlockValue(hash.Bytes(), sig, big.NewInt(1))
-	data := SignedBlockDataFromValue(v)
-
-	assert.Equal(t, common.Bytes2Hex(sig), data.Signature)
-	assert.Equal(t, hash, data.BlockHash)
-	assert.Equal(t, data.BlockID, big.NewInt(1))
-}
diff --git a/prover/guardian_prover_heartbeater/guardian_prover.go b/prover/guardian_prover_heartbeater/guardian_prover.go
index 111379c15..fb66fbcbb 100644
--- a/prover/guardian_prover_heartbeater/guardian_prover.go
+++ b/prover/guardian_prover_heartbeater/guardian_prover.go
@@ -226,11 +226,6 @@ func (s *GuardianProverHeartBeater) signBlock(ctx context.Context, blockID *big.
 	return signed, header, nil
 }
 
-// Close closes the underlying database.
-func (s *GuardianProverHeartBeater) Close() error {
-	return nil
-}
-
 // SendHeartbeat sends a heartbeat to the health check server.
 func (s *GuardianProverHeartBeater) SendHeartbeat(
 	ctx context.Context,
diff --git a/prover/guardian_prover_heartbeater/interface.go b/prover/guardian_prover_heartbeater/interface.go
index 95232a74b..1c0939c1e 100644
--- a/prover/guardian_prover_heartbeater/interface.go
+++ b/prover/guardian_prover_heartbeater/interface.go
@@ -27,5 +27,4 @@ type Heartbeater interface {
 type BlockSenderHeartbeater interface {
 	BlockSigner
 	Heartbeater
-	Close() error
 }
diff --git a/prover/prover.go b/prover/prover.go
index bcad2fac5..38a74c99e 100644
--- a/prover/prover.go
+++ b/prover/prover.go
@@ -321,12 +321,6 @@ func (p *Prover) eventLoop() {
 
 // Close closes the prover instance.
 func (p *Prover) Close(ctx context.Context) {
-	if p.guardianProverHeartbeater != nil {
-		if err := p.guardianProverHeartbeater.Close(); err != nil {
-			log.Error("failed to close database connection", "error", err)
-		}
-	}
-
 	if err := p.server.Shutdown(ctx); err != nil {
 		log.Error("Failed to shut down prover server", "error", err)
 	}