我正在尝试验证我的带有参数的合同,但出现了以下错误:
Error in plugin @nomiclabs/hardhat-etherscan: The contract verification failed.
Reason: Fail - Unable to verify
我也正在导入Open Zeppelin
合约中的ERC721Enumerable
和Ownable
。
这是我的NFTCollectible.sol
。
pragma solidity 0.8.10;
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "hardhat/console.sol";
contract NFTCollectible is ERC721Enumerable, Ownable {
using Strings for uint256;
string public baseURI;
string public baseExtension = ".json";
uint256 public cost = 0.08 ether;
uint256 public maxSupply = 5000;
uint256 public maxMintAmount = 25;
mapping(address => uint256) public addressMintedBalance;
constructor(
string memory _name,
string memory _symbol,
string memory _initBaseURI,
string memory _initNotRevealedUri
) ERC721(_name, _symbol) {
setBaseURI(_initBaseURI);
setNotRevealedURI(_initNotRevealedUri);
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function mint(uint256 _mintAmount) public payable {
require(!paused, "the contract is paused");
uint256 supply = totalSupply();
require(_mintAmount > 0, "need to mint at least 1 NFT");
}
function walletOfOwner(address _owner)
public
view
returns (uint256[] memory)
{
uint256 ownerTokenCount = balanceOf(_owner);
uint256[] memory tokenIds = new uint256[](ownerTokenCount);
for (uint256 i; i < ownerTokenCount; i++) {
tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokenIds;
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
string memory currentBaseURI = _baseURI();
return
bytes(currentBaseURI).length > 0
? string(
abi.encodePacked(
currentBaseURI,
tokenId.toString(),
baseExtension
)
)
: "";
}
function setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension)
public
onlyOwner
{
baseExtension = _newBaseExtension;
}
function withdraw() public payable onlyOwner {
(bool me, ) = payable(owner())
.call{value: address(this).balance}("");
require(me);
}
}
这是我的 `deploy.js` 文件。
const main = async () => {
const nftContractFactory = await hre.ethers.getContractFactory('NFTCollectible');
const nftContract = await nftContractFactory.deploy(
"NFTCollectible",
"NFTC",
"ipfs://CID",
"https://www.example.com"
);
await nftContract.deployed();
console.log("Contract deployed to:", nftContract.address);
};
const runMain = async () => {
try {
await main();
process.exit(0);
} catch (error) {
console.log(error);
process.exit(1);
}
};
runMain();
这是我的
hardhat.config
文件。require('@nomiclabs/hardhat-waffle');
require('@nomiclabs/hardhat-etherscan');
require('dotenv').config();
module.exports = {
solidity: '0.8.10',
networks: {
rinkeby: {
url: process.env.STAGING_ALCHEMY_KEY,
accounts: [process.env.PRIVATE_KEY],
},
mainnet: {
chainId: 1,
url: process.env.PROD_ALCHEMY_KEY,
accounts: [process.env.PRIVATE_KEY],
gasPrice: 3000000
},
},
etherscan: {
apiKey: process.env.ETHERSCAN_KEY
}
};
我意识到Hardhat不支持0.8.10+
编译器版本,但其他版本也无法正常工作。出现了相同的错误。