使用 Hardhat 在 EtherScan 上验证智能合约时出错

Question

以下是我的智能合约（已部署）。当我尝试验证它以将代码提交到 Etherscan 时，我收到以下错误，我真的不知道为什么。请问有人可以建议吗？

 npx hardhat verify --network ropsten 0xE9abA803d6a801fce021d0074ae71256C9F24Da4

错误信息：

 Error in plugin @nomiclabs/hardhat-etherscan: More than one contract was found to match the deployed bytecode.
 Please use the contract parameter with one of the following contracts:
 * @openzeppelin/contracts/finance/PaymentSplitter.sol:PaymentSplitter
  * contracts/MyNFTContract.sol: MyNFTContract

 For example:

   hardhat verify --contract contracts/Example.sol:ExampleContract <other args>

 If you are running the verify subtask from within Hardhat instead:

   await run("verify:verify", {
     <other args>,
     contract: "contracts/Example.sol:ExampleContract"
  };

MyNFTContract.sol：

 // SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;

 import "@openzeppelin/contracts/finance/PaymentSplitter.sol";

 contract MyNFTContract is PaymentSplitter {
     // Addresses of payees
     address[] private _CSPayees = [
         0x23377d974d85C49E9CB6cfdF4e0EED1C0Fc85E6A,
         0x85F68F10d3c13867FD36f2a353eeD56533f1C751
     ];
     // Number of shares allocated per address in this contract.  In same order as _CSPayees
     uint256[] private _CSShares = [1, 2];

     constructor() PaymentSplitter(_CSPayees, _CSShares) {}
 }

我的部署脚本deploy.js：

 async function main() {
const PaymentSplitter = await ethers.getContractFactory("MyNFTContract")

// Start deployment, returning a promise that resolves to a contract object
const myNFT = await PaymentSplitter.deploy()
console.log("Contract deployed to address:", myNFT.address)
 }

 main()
.then(() => process.exit(0))
.catch((error) => {
    console.error(error)
    process.exit(1)
})

Answer 1

Hardhat 在项目中发现了多个合约（您的MyNFTContract和导入的PaymentSplitter），并且它不知道您要根据哪一个合约来验证字节码。

您需要使用选项指定合同（您要验证的合同）--contract。

npx hardhat verify \
--contract "contracts/MyNFTContract.sol" \
--network ropsten 0xE9abA803d6a801fce021d0074ae71256C9F24Da4