Ethereum: I can’t verify a proxy contract on polygon amoy testnet with Hardhat

Verifying Proxy Contracts on Polygon AMOY Testnet with Hardhat

As a developer working with Ethereum, you’ve likely encountered the challenges of testing proxy contracts on the Polygon AMOY testnet. In this article, we’ll explore how to verify a proxy contract using Hardhat and Etherscan.

Why Do Proxy Contracts Matter on AMOY?

Proxy contracts are essential for testing decentralized applications (dApps) that rely on proxy services, such as Ethereum Virtual Machines (EVM) instances. On the AMOY testnet, these proxy contracts help developers simulate real-world usage scenarios to identify and fix issues before deploying them to mainnet.

Troubleshooting Proxy Contract Verification

When running verify commands with Hardhat and Etherscan, you may encounter errors like those below:

• “Etherscan API call failed with status 404…”

• “Proxy contract not found on the testnet”

Let’s dive into how to fix these issues.

Step 1: Update Your Etherscan Account

Ensure that your Etherscan account is updated with the latest settings. This includes updating your etherscan.com account URL and API key.

Step 2: Verify Proxy Contract on Polygon AMOY Testnet with Hardhat

To verify a proxy contract using Hardhat, follow these steps:

Install Required Packages

Add the following packages to your Hardhat.config.js file:

module.exports = {

  // ... other configurations ...

  networks: {

    header: {

      provider: '

      network_id: 1, // Polygon AMOY testnet

    },

  },

  proxy: {

    contracts: ['path/to/proxy-contract.sol'],

  },

};

Replace YOUR_PROJECT_ID with your actual Infura project ID.

Verify Proxy Contract

Create a new file named tests/contract.js and add the following code:

const ethers = require('ethers');

const { verify } = require('@hardhat-dev/verify');


const proxyAddress = '0x...ProxyContractAddress...'; // Replace with your proxy contract address

const contract = new ethers.Contract(proxyAddress, contractsPath, provider);


// Define a test function to execute on the testnet

async function test() {

  try {

    await contract.test();

    console.log('Proxy contract verified successfully!');

  } catch (error) {

    console.error(error);

  }

}


test();

Replace 0x...ProxyContractAddress... with your actual proxy contract address.

Run Verify Command

Run the following command to verify your proxy contract:

npx hardhat verify --network polygon --contracts tests/contract.js

This will execute the test function on the Polygon AMOY testnet and return any errors that occurred during verification.

Step 3: Check Etherscan API Status

After verifying your proxy contract, check the Etherscan API status to ensure it’s working correctly:

etherscan.com/api/v2/txs/

Replace with the ID of your verified transaction. If you encounter any issues or errors, please refer to the [Etherscan API documentation]( for more information.

By following these steps, you should be able to successfully verify a proxy contract on Polygon AMOY testnet with Hardhat and Etherscan.

Additional Tips

• Make sure your Ethereum network is updated to the latest version.

• Ensure that your testnet account has sufficient balance to execute transactions.

• Consider using a testing framework like hardhat-tester for more comprehensive testing scenarios.

Ethereum Mining Using Possible Closed