finished week4 task

.gitignore

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+node_modules
+.env
+
+# Hardhat files
+/cache
+/artifacts
+
+# TypeChain files
+/typechain
+/typechain-types
+
+# solidity-coverage files
+/coverage
+/coverage.json
+
+# Hardhat Ignition default folder for deployments against a local node
+ignition/deployments/chain-31337

contracts/Lock.sol

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+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.27;
+
+// Uncomment this line to use console.log
+// import "hardhat/console.sol";
+
+contract Lock {
+    uint public unlockTime;
+    address payable public owner;
+
+    event Withdrawal(uint amount, uint when);
+
+    constructor(uint _unlockTime) payable {
+        require(
+            block.timestamp < _unlockTime,
+            "Unlock time should be in the future"
+        );
+
+        unlockTime = _unlockTime;
+        owner = payable(msg.sender);
+    }
+
+    function withdraw() public {
+        // Uncomment this line, and the import of "hardhat/console.sol", to print a log in your terminal
+        // console.log("Unlock time is %o and block timestamp is %o", unlockTime, block.timestamp);
+
+        require(block.timestamp >= unlockTime, "You can't withdraw yet");
+        require(msg.sender == owner, "You aren't the owner");
+
+        emit Withdrawal(address(this).balance, block.timestamp);
+
+        owner.transfer(address(this).balance);
+    }
+}

contracts/SimpleNFT.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
+
+contract SimpleNFT is ERC721 {
+    uint256 private _nextTokenId;
+
+    constructor() ERC721("SimpleNFT", "SNFT") {
+        _nextTokenId = 0;
+    }
+
+    function safeMint(address to) public {
+        uint256 tokenId = _nextTokenId;
+        _nextTokenId++;
+        _safeMint(to, tokenId);
+    }
+
+    function totalSupply() public view returns (uint256) {
+        return _nextTokenId;
+    }
+}

deploy/01-deploy-simple-nft.js

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+const { ethers } = require("hardhat");
+
+module.exports = async ({ getNamedAccounts, deployments }) => {
+  const { deploy } = deployments;
+  const { deployer } = await getNamedAccounts();
+
+  console.log("Deploying SimpleNFT contract with account:", deployer);
+
+  const simpleNFT = await deploy("SimpleNFT", {
+    from: deployer,
+    args: [],
+    log: true,
+    waitConfirmations: 1,
+  });
+
+  console.log("SimpleNFT deployed to:", simpleNFT.address);
+
+  // Verify the contract on Etherscan
+  if (network.name !== "hardhat") {
+    try {
+      await hre.run("verify:verify", {
+        address: simpleNFT.address,
+        constructorArguments: [],
+      });
+    } catch (error) {
+      console.error("Error verifying contract:", error);
+    }
+  }
+};
+
+module.exports.tags = ["SimpleNFT"];

deployments/sepolia/.chainId

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+11155111