Feature/797 create smart contract

examples/bri-3/package.json

@@ -41,6 +41,7 @@
     "@nestjs/schedule": "^3.0.1",
     "@nestjs/swagger": "^7.3.1",
     "@noble/curves": "^1.2.0",
+    "@openzeppelin/contracts": "^5.0.2",
     "@personaelabs/spartan-ecdsa": "^2.1.4",
     "@prisma/client": "^5.2.0",
     "circomlib": "^2.0.5",

examples/bri-3/src/bri/ccsm/contracts/CcsmBpiStateAnchor.sol

@@ -0,0 +1,44 @@
+//SPDX-License-Identifier: UNLICENSED
+pragma solidity 0.8.17;
+
+import "@openzeppelin/contracts/access/AccessControl.sol";
+
+contract CcsmBpiStateAnchor is AccessControl {
+  mapping(string => string) public anchorHashStore;
+  event AnchorHashSet(string indexed workgroupId, string anchorHash);
+
+  bytes32 public constant ADMIN_ROLE = keccak256("ADMIN_ROLE");  
+
+  constructor(address[] memory admins) {  
+    _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); // Grant deployer the default admin role  
+
+    for (uint i = 0; i < admins.length; i++) {  
+      _grantRole(ADMIN_ROLE, admins[i]); // Grant admin role to each address  
+    }  
+  }  
+
+  function setAnchorHash(
+    string calldata _workgroupId,
+    string calldata _anchorHash
+  ) external onlyAdmin {
+    require(bytes(_workgroupId).length > 0, 'WorkgroupId cannot be empty');
+    require(bytes(_workgroupId).length < 36, 'WorkgroupId cannot exceed 36 bytes');
+    require(bytes(_anchorHash).length > 0, 'AnchorHash cannot be empty');
+    require(bytes(_anchorHash).length > 256, 'AnchorHash cannot exceed 256 bytes');
+
+    anchorHashStore[_workgroupId] = _anchorHash;
+
+    emit AnchorHashSet(_workgroupId, _anchorHash);
+  }
+
+  function getAnchorHash(
+    string calldata _workgroupId
+  ) external view returns (string memory) {
+    return anchorHashStore[_workgroupId];
+  }
+
+   modifier onlyAdmin() {
+    require(hasRole(ADMIN_ROLE, msg.sender), "Only admin can call this function");
+    _;
+  }
+}