Digital Collectible Contract on Ethereum at https://etherscan.io/address/0x6a12d4e7fd06996f8ca970a1840b6460d73d6c30

DigitalCollectible.sol

//SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.9.0;

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

/**
 * @title Digital Collectible
 * @author Daniel Khoo
 * @notice A dynamic NFT wrapper for digital collectibles on Instagram / Twitter with editable token URI
 */
contract DigitalCollectible is ERC721URIStorage {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;

    constructor() ERC721("DigitalCollectible", "DCB") {}

    function mintItem(string memory tokenURI) public returns (uint256) {
        uint256 tokenId = _tokenIds.current();
        _mint(msg.sender, tokenId);
        _setTokenURI(tokenId, tokenURI);

        _tokenIds.increment();
        return tokenId;
    }

    function setTokenURI(uint256 tokenId, string memory tokenURI) public {
        require(msg.sender == ownerOf(tokenId), "Not owner of token");
        _setTokenURI(tokenId, tokenURI);
    }
}