diff --git a/solidity/contracts/StorageMirrorRootRegistry.sol b/solidity/contracts/StorageMirrorRootRegistry.sol
index abccd89..0bbed98 100644
--- a/solidity/contracts/StorageMirrorRootRegistry.sol
+++ b/solidity/contracts/StorageMirrorRootRegistry.sol
@@ -30,6 +30,11 @@ contract StorageMirrorRootRegistry is IStorageMirrorRootRegistry {
    */
   bytes32 public latestVerifiedStorageMirrorStorageRoot;
 
+  /**
+   * @notice The latest verified block number of the Home chain
+   */
+  uint256 public latestVerifiedBlockNumber;
+
   constructor(address _storageMirror, IVerifierModule _verifierModule, IBlockHeaderOracle _blockHeaderOracle) {
     STORAGE_MIRROR = _storageMirror;
     VERIFIER_MODULE = _verifierModule;
@@ -49,6 +54,7 @@ contract StorageMirrorRootRegistry is IStorageMirrorRootRegistry {
       VERIFIER_MODULE.extractStorageMirrorStorageRoot(_blockHeader, _accountProof);
 
     latestVerifiedStorageMirrorStorageRoot = _latestVerifiedStorageMirrorStorageRoot;
+    latestVerifiedBlockNumber = _blockNumber;
 
     emit VerifiedStorageMirrorStorageRoot(_blockNumber, latestVerifiedStorageMirrorStorageRoot);
   }
diff --git a/solidity/interfaces/IStorageMirrorRootRegistry.sol b/solidity/interfaces/IStorageMirrorRootRegistry.sol
index 51c0049..165686a 100644
--- a/solidity/interfaces/IStorageMirrorRootRegistry.sol
+++ b/solidity/interfaces/IStorageMirrorRootRegistry.sol
@@ -38,6 +38,12 @@ interface IStorageMirrorRootRegistry {
    */
   function BLOCK_HEADER_ORACLE() external view returns (IBlockHeaderOracle _blockHeaderOracle);
 
+  /**
+   * @notice The latest verified block number of the Home chain
+   * @return _latestVerifiedBlockNumber The latest verified block number of the Home chain
+   */
+  function latestVerifiedBlockNumber() external view returns (uint256 _latestVerifiedBlockNumber);
+
   /**
    * @notice The latest verified storage root of the StorageMirror contract in Home chain
    * @return _latestVerifiedStorageMirrorStorageRoot The latest verified storage root of the StorageMirror contract in Home chain