BopToken

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

/**
 * @title BopToken
 * @notice Plain ERC-20. Fixed 1,000,000,000 supply minted once at deploy to `initialOwner`.
 * @dev Owner can call OpenZeppelin `renounceOwnership()` to make the token ownerless.
 *      No mint / burn / pause / tax.
 */
contract BopToken is ERC20, Ownable {
    uint256 public constant TOTAL_SUPPLY = 1_000_000_000 * 10 ** 18;

    constructor(address initialOwner) ERC20("Board of Proof", "BOP") Ownable(initialOwner) {
        require(initialOwner != address(0), "zero owner");
        _mint(initialOwner, TOTAL_SUPPLY);
    }
}