Initial commit

backend/contracts/MyContract.sol

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract MyContract {
+    address public owner;
+
+    constructor() {
+        owner = msg.sender;
+    }
+
+    modifier onlyOwner() {
+        require(msg.sender == owner, "Only owner can call this function");
+        _;
+    }
+
+    function setOwner(address newOwner) public onlyOwner {
+        require(newOwner != address(0), "New owner cannot be zero address");
+        owner = newOwner;
+    }
+}