diff --git a/pkg/rpc/utils.go b/pkg/rpc/utils.go
index e4de73293..068be794a 100644
--- a/pkg/rpc/utils.go
+++ b/pkg/rpc/utils.go
@@ -192,17 +192,17 @@ func GetBlockProofStatus(
 		return nil, err
 	}
 
-	l1Header, err := cli.L1.HeaderByNumber(ctxWithTimeout, new(big.Int).Sub(l1Origin.L1BlockHeight, common.Big1))
+	header, err := cli.L2.HeaderByHash(ctxWithTimeout, l1Origin.L2BlockHash)
 	if err != nil {
 		return nil, err
 	}
 
-	if l1Origin.L2BlockHash != transition.BlockHash || transition.StateRoot != l1Header.Root {
+	if l1Origin.L2BlockHash != transition.BlockHash || transition.StateRoot != header.Root {
 		log.Info(
 			"Different block hash or state root detected, try submitting a contest",
 			"localBlockHash", common.BytesToHash(l1Origin.L2BlockHash[:]),
 			"protocolTransitionBlockHash", common.BytesToHash(transition.BlockHash[:]),
-			"localStateRoot", l1Header.Root,
+			"localStateRoot", header.Root,
 			"protocolTransitionStateRoot", common.BytesToHash(transition.StateRoot[:]),
 		)
 		return &BlockProofStatus{
diff --git a/prover/proof_submitter/proof_submitter.go b/prover/proof_submitter/proof_submitter.go
index 1ee720947..d24417ceb 100644
--- a/prover/proof_submitter/proof_submitter.go
+++ b/prover/proof_submitter/proof_submitter.go
@@ -115,11 +115,6 @@ func (s *ProofSubmitter) RequestProof(ctx context.Context, event *bindings.Taiko
 		return err
 	}
 
-	l1Header, err := s.rpc.L1.HeaderByHash(ctx, event.Meta.L1Hash)
-	if err != nil {
-		return err
-	}
-
 	// Request proof.
 	opts := &proofProducer.ProofRequestOptions{
 		BlockID:            block.Number(),
@@ -129,7 +124,7 @@ func (s *ProofSubmitter) RequestProof(ctx context.Context, event *bindings.Taiko
 		MetaHash:           blockInfo.Blk.MetaHash,
 		BlockHash:          block.Hash(),
 		ParentHash:         block.ParentHash(),
-		StateRoot:          l1Header.Root,
+		StateRoot:          block.Root(),
 		EventL1Hash:        event.Raw.BlockHash,
 		Graffiti:           common.Bytes2Hex(s.graffiti[:]),
 		GasUsed:            block.GasUsed(),