diff --git a/src/MultiSigContractV2.sol b/src/MultiSigContractV2.sol
index fc55b8c..e8f15c6 100644
--- a/src/MultiSigContractV2.sol
+++ b/src/MultiSigContractV2.sol
@@ -33,4 +33,73 @@ contract MultiSigContractV2 is Ownable, ReentrancyGuard, Pausable {
     error MultiSigContract__SignerNotFound();
     error MultiSigContract__InsufficientSignatures();
     error MultiSigContract__InvalidAddress();
+    error MultiSigContract__TimelockActive();
+    error MultiSigContract__EmergencyModeActive();
+    error MultiSigContract__InvalidThreshold();
+    error MultiSigContract__DuplicateSigner();
+
+    ////////////////////
+    // Constants //
+    //////////////////
+    uint256 public constant MAX_SIGNERS = 20;
+    uint256 public constant MIN_SIGNERS = 2;
+    uint256 public constant MAX_SIGNATURE_THRESHOLD = 100; // 100%
+    uint256 public constant DEFAULT_TX_EXPIRY = 7 days;
+    uint256 public constant TIMELOCK_DURATION = 2 days;
+    uint256 public constant EMERGENCY_TIMELOCK = 24 hours;
+
+    ////////////////////
+    // State Variables //
+    ////////////////////
+
+    /// @notice Factory token contract reference
+    FactoryTokenContract public factoryTokenContract;
+
+    /// @notice Sign Protocol instance
+    ISP public spInstance;
+
+    /// @notice Schema IDs for different attestation types
+    uint64 public signatureSchemaId;
+    uint64 public revocationSchemaId;
+    uint64 public executionSchemaId;
+
+    /// @notice Global signature threshold (percentage * 100, e.g., 6000 = 60%)
+    uint256 public signatureThreshold = 6000; // 60% by default
+
+    /// @notice Transaction expiry duration
+    //uint256 public transactionExpiry = DEFAULT_TX_EXPIRY;
+
+    /// @notice Emergency mode status
+    bool public emergencyMode;
+
+    /// @notice Emergency admin (can pause/unpause in emergencies)
+    address public emergencyAdmin;
+
+    ////////////////////
+    // Constructor //
+    ////////////////////
+
+    constructor(
+        address _spInstance,
+        uint64 _signatureSchemaId,
+        uint64 _revocationSchemaId,
+        uint64 _executionSchemaId,
+        address _emergencyAdmin,
+        address _initialOwner
+    )
+        Ownable(_initialOwner)
+    {
+        if (_spInstance == address(0) || _emergencyAdmin == address(0)) {
+            revert MultiSigContract__InvalidAddress();
+        }
+
+        spInstance = ISP(_spInstance);
+        signatureSchemaId = _signatureSchemaId;
+        revocationSchemaId = _revocationSchemaId;
+        executionSchemaId = _executionSchemaId;
+        emergencyAdmin = _emergencyAdmin;
+
+        // Add owner as initial signer with admin role
+        //_addSigner(_initialOwner, "admin");
+    }
 }