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contracts...lolo.sol

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

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract T3KN4RK1ST is ERC721URIStorage{
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;
    mapping(string => uint8) hashes;
    
    constructor() ERC721("T3KN4RK1ST", "TKT") {}
  
    function awardItem(address recipient, string memory hash, string memory metadata) public returns (uint256){
        require(hashes[hash] != 1);
        hashes[hash] = 1;
        _tokenIds.increment();
        uint256 newItemId = _tokenIds.current();
        _mint(recipient, newItemId);
        _setTokenURI(newItemId, metadata);
        
        return newItemId;
    }
}