alexanderattar

var ethUtil = require('ethereumjs-util');

var data = 'Login';
var message = ethUtil.toBuffer(data);
var msgHash = ethUtil.hashPersonalMessage(message);

var privateKey = new Buffer('62debf78d596673bce224a85a90da5aecf6e781d9aadcaedd4f65586cfe670d2', "hex")
var sig = ethUtil.ecsign(msgHash, privateKey);

var signature = ethUtil.toBuffer(sig)

z0r0z

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.8.4;

import "https://github.com/Rari-Capital/solmate/src/tokens/ERC721.sol";
import "https://github.com/kalidao/kali-contracts/blob/main/contracts/utils/NFThelper.sol";

/// @notice Minimal ERC-20 interface.
interface IERC20minimal { 
    function balanceOf(address account) external view returns (uint256);