An NFT to track progress as JSON

nft.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
 
import "https://github.com/0xcert/ethereum-erc721/src/contracts/tokens/nf-token-metadata.sol";
import "https://github.com/0xcert/ethereum-erc721/src/contracts/ownership/ownable.sol";
 
contract newNFT is NFTokenMetadata, Ownable {

  constructor() {
    nftName = "Practical Crypto Progress Token";
    nftSymbol = "PCPT";
  }
 
  function mint(address _to, uint256 _tokenId) external onlyOwner {
    super._mint(_to, _tokenId);
    super._setTokenUri(_tokenId, '{"day1": false,"day2": false,"day3": false,"gameChamp": false}');
  }
  
  function update(uint256 _tokenId, string calldata _uri) external onlyOwner {
    super._setTokenUri(_tokenId, _uri);
  }
 
}