VeriFarm

contract MinterYT is ERC721, ERC721Enumerable, ERC721URIStorage {

using SafeMath for uint256;

uint public constant mintPrice = 0;

function _beforeTokenTransfer(address from, address to, uint256 tokenId)

internal

override(ERC721, ERC721Enumerable)

{

super._beforeTokenTransfer(from, to, tokenId);

}

function _burn(uint256 tokenId) internal override(ERC721, ERC721URIStorage) {

super._burn(tokenId);

}

function tokenURI(uint256 tokenId)

public

view

override(ERC721, ERC721URIStorage)

returns (string memory)

{

return super.tokenURI(tokenId);

}

function supportsInterface(bytes4 interfaceId)

public

view

override(ERC721, ERC721Enumerable)

returns (bool)

{

return super.supportsInterface(interfaceId);

}

constructor() ERC721("YTMinter", "YTM") {}

function mint(string memory _uri) public payable {

uint256 mintIndex = totalSupply();

_safeMint(msg.sender, mintIndex);

_setTokenURI(mintIndex, _uri);

}

}