在 Etherscan Rinkeby 上验证/发布智能合约

Question

我正在尝试使用 hardhat 和 hardhat-etherscan 验证并发布我已部署到 rinkeby 网络的智能合约。当我运行验证脚本时出现错误。

我运行以下命令

npx hardhat clean 
npx hardhat verify --network rinkeby 0xDDeE39Ae632760906d273B450493405Dc3C455Fe "ipfs://QmX6MjxS5NsEFGe9WtKCskf5fhuifFvZ9Xi12tTBYPjEiH"

运行上面的脚本后，出现以下错误。

Compiling 17 files with 0.8.4
Compilation finished successfully
Compiling 1 file with 0.8.4
Successfully submitted source code for contract
contracts/NFTCollectible.sol:NFTCollectible at 0xDDeE39Ae632760906d273B450493405Dc3C455Fe
for verification on Etherscan. Waiting for verification result...

我们尝试在不包含任何无关合同的情况下验证您的合同 NFTCollectible，但它失败了。 使用用于编译和部署它的完整 solc 输入再次尝试。 这意味着不相关的合约可能会显示在 Etherscan 上...

成功提交合约源代码 合约/NFTCollectible.sol:NFTCollectible 位于 0xDDeE39Ae632760906d273B450493405Dc3C455Fe 在 Etherscan 上进行验证。等待验证结果...

Error in plugin @nomiclabs/hardhat-etherscan: The contract verification failed.
Reason: Fail - Unable to verify

hardhat.config.js

require("@nomiclabs/hardhat-waffle");
require("@nomiclabs/hardhat-etherscan");
require('dotenv').config();

const { API_URL, PRIVATE_KEY, ETHERSCAN_API } = process.env;

// This is a sample Hardhat task. To learn how to create your own go to
// https://hardhat.org/guides/create-task.html
task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
  const accounts = await hre.ethers.getSigners();

  for (const account of accounts) {
    console.log(account.address);
  }
});

// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more

/**
 * @type import('hardhat/config').HardhatUserConfig
 */
module.exports = {
  solidity: "0.8.4",
  defaultNetwork: "rinkeby",
  networks: {
    rinkeby: {
      url: API_URL,
      accounts: [PRIVATE_KEY]
    }
  },
  etherscan: {
    apiKey: ETHERSCAN_API
  }
};

我的智能合约包括几个从 openzepplin 导入的内容。

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";

contract NFTCollectible is ERC721Enumerable, Ownable {
    using SafeMath for uint256;
    using Counters for Counters.Counter;

    Counters.Counter private _tokenIds;

    uint256 public constant MAX_SUPPLY = 100;
    uint256 public constant PRICE = 0.01 ether;
    uint256 public constant MAX_PER_MINT = 5;

    string public baseTokenURI;

    constructor(string memory baseURI) ERC721("NFT Collectible", "NFTC") {
        setBaseURI(baseURI);
    }

    function reserveNFTs() public onlyOwner {
        uint256 totalMinted = _tokenIds.current();
        require(totalMinted.add(10) < MAX_SUPPLY, "Not enough NFTs");
        for (uint256 i = 0; i < 10; i++) {
            _mintSingleNFT();
        }
    }

function _baseURI() internal view virtual override returns (string memory) {
    return baseTokenURI;
}

function setBaseURI(string memory _baseTokenURI) public onlyOwner {
    baseTokenURI = _baseTokenURI;
}

function mintNFTs(uint256 _count) public payable {
    uint256 totalMinted = _tokenIds.current();
    require(totalMinted.add(_count) <= MAX_SUPPLY, "Not enough NFTs!");
    require(
        _count > 0 && _count <= MAX_PER_MINT,
        "Cannot mint specified number of NFTs."
    );
    require(
        msg.value >= PRICE.mul(_count),
        "Not enough ether to purchase NFTs."
    );
    for (uint256 i = 0; i < _count; i++) {
        _mintSingleNFT();
    }
}

function _mintSingleNFT() private {
    uint256 newTokenID = _tokenIds.current();
    _safeMint(msg.sender, newTokenID);
    _tokenIds.increment();
}

function tokensOfOwner(address _owner)
    external
    view
    returns (uint256[] memory)
{
    uint256 tokenCount = balanceOf(_owner);
    uint256[] memory tokensId = new uint256[](tokenCount);
    for (uint256 i = 0; i < tokenCount; i++) {
        tokensId[i] = tokenOfOwnerByIndex(_owner, i);
    }

    return tokensId;
}

function withdraw() public payable onlyOwner {
    uint256 balance = address(this).balance;
    require(balance > 0, "No ether left to withdraw");
    (bool success, ) = (msg.sender).call{value: balance}("");
    require(success, "Transfer failed.");
}

}

Answer 1

我刚刚遇到了这个问题，并通过意识到我的构造函数参数与我最初部署合约的参数不匹配来解决它。对你来说，这是可能的：

npx hardhat verify --network rinkeby 0xDDeE39Ae632760906d273B450493405Dc3C455Fe "ipfs://QmX6MjxS5NsEFGe9WtKCskf5fhuifFvZ9Xi12tTBYPjEiH"

实际上应该是： npx hardhat verify --network rinkeby 0xDDeE39Ae632760906d273B450493405Dc3C455Fe "QmX6MjxS5NsEFGe9WtKCskf5fhuifFvZ9Xi12tTBYPjEiH" 如果您在最初部署合同时最初没有包含 ipfs://，则删除它。

我会重新部署它并仔细检查部署时使用的参数是否与验证时使用的参数相同。