ACL.sol

ACL.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract MyToken is ERC721, Ownable {

    mapping(address => bool) public minters;

    modifier onlyMinter() {
        require(minters[msg.sender], "Ownable: caller is not the minter");
    }

    using Counters for Counters.Counter;

    Counters.Counter private _tokenIdCounter;

    constructor() ERC721("MyToken", "MTK") {}
    
    function setMinter(address newMinter) public onlyOwner {
        minters[newMinter] = true;
    }

    function unsetMinter(address newMinter) public onlyOwner {
        minters[newMinter] = false;
    }

    function safeMint(address to) public onlyMinter {
        uint256 tokenId = _tokenIdCounter.current();
        _tokenIdCounter.increment();
        _safeMint(to, tokenId);
    }
}

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