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480f454 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | // SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
contract Collection16 is ERC721 {
address public immutable minter;
constructor(address minter_) ERC721("Collection", "NFT") {
minter = minter_;
}
function mint(address to, uint256 tokenId) external {
require(msg.sender == minter, "only minter");
_mint(to, tokenId);
}
function exists(uint256 tokenId) external view returns (bool) {
return _ownerOf(tokenId) != address(0);
}
}
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