// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract BeeyCoin {
    string public name = "Beey Coin";
    string public symbol = "BEEY";
    uint256 public totalSupply = 860000000 * 10**18; // 8.6 billion tokens
    uint8 public decimals = 18;

    mapping(address => uint256) balances;
    mapping(address => mapping(address => uint256)) allowances;

    address public owner;
    address private contractOwner; // Keep track of initial owner

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    modifier onlyOwner() {
        require(msg.sender == owner, "Ownable: caller is not the owner");
        _;
    }

    constructor() {
        owner = msg.sender;
        contractOwner = msg.sender; // Set initial owner
        balances[msg.sender] = totalSupply;
    }

    function balanceOf(address account) external view returns (uint256) {
        return balances[account];
    }

    function transfer(address recipient, uint256 amount) external returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool) {
        uint256 currentAllowance = allowances[sender][msg.sender];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        _transfer(sender, recipient, amount);
        unchecked {
            _approve(sender, msg.sender, currentAllowance - amount);
        }
        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        uint256 senderBalance = balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            balances[sender] = senderBalance - amount;
        }
        balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    function approve(address spender, uint256 amount) external returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function _approve(address _owner, address spender, uint256 amount) internal {
        require(_owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        allowances[_owner][spender] = amount;
        emit Approval(_owner, spender, amount);
    }

    function allowance(address _owner, address spender) external view returns (uint256) {
        return allowances[_owner][spender];
    }

    function renounceOwnership() external onlyOwner {
        emit OwnershipTransferred(contractOwner, address(0));
        contractOwner = address(0);
    }

    receive() external payable {
        revert("Contract does not accept ether");
    }

    function transferOwnership(address newOwner) external onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(contractOwner, newOwner);
        contractOwner = newOwner;
    }
}

{
  "compilationTarget": {
    "BeeyCoin.sol": "BeeyCoin"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}