How to verify smart contract

Submit your smart contract code for independent verification and publishing on Avascan

If you'd like to verify contracts via our website, you may do so using the page.

With the Etherscan Compatible Verify Contract API, verify smart contract on Avascan is now more easy than ever. There are few things you need to connect your favorite verify contract client with Etherscan compatibility:

Define the networkId: mainnet, testnet
Retrieve the chainId of the evm compatible blockchain. You can use the .
Compose the Etherscan Compatible API endpoint: https://api.avascan.info/v2/network/:networkId/evm/:chainId/etherscan

The following endpoints are provided only as an example:

Blockchain

API Endpoint (https)

C-Chain

mainnet

api.avascan.info/v2/network/mainnet/evm/43114/etherscan

Swimmer

mainnet

api.avascan.info/v2/network/mainnet/evm/73772/etherscan

C-Chain

testnet

api.avascan.info/v2/network/testnet/evm/43113/etherscan

WAGMI

testnet

api.avascan.info/v2/network/testnet/evm/11111/etherscan

hardhat-etherscan

, is an hardhat plugin, that simplify the smart contract verification process on Etherscan. With the Etherscan Compatible Verify Contract API, you can use this tool to verify your smart contract on Avascan as well.

Let's say you want to verify your smart contract on wagmi, this is an example of hardhat.config.ts:

import { HardhatUserConfig } from "hardhat/config";
import "@nomicfoundation/hardhat-toolbox";
import "@nomiclabs/hardhat-etherscan";

const config: HardhatUserConfig = {
  etherscan: {
    apiKey: {
      wagmi: "avascan", // apiKey is not required, just set a placeholder
    },
    customChains: [
      {
        network: "wagmi",
        chainId: 11111,
        urls: {
          apiURL: "https://api.avascan.info/v2/network/testnet/evm/11111/etherscan",
          browserURL: "https://testnet.avascan.info/blockchain/wagmi"
        }
      }
    ]

  },
  networks: {
    wagmi: {
      url: 'https://subnets.avax.network/wagmi/wagmi-chain-testnet/rpc',
      accounts: [process.env.PRIVATE_KEY]
    },
  },
};

export default config;

Deploy

npx hardhat run scripts/deploy.ts --network wagmi

Verify

export PRIVATE_KEY=...
npx hardhat verify --network wagmi 0x...

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Last updated 2 years ago

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import { HardhatUserConfig } from "hardhat/config"; import "@nomicfoundation/hardhat-toolbox"; import "@nomiclabs/hardhat-etherscan"; const config: HardhatUserConfig = { etherscan: { apiKey: { wagmi: "avascan", // apiKey is not required, just set a placeholder }, customChains: [ { network: "wagmi", chainId: 11111, urls: { apiURL: "https://api.avascan.info/v2/network/testnet/evm/11111/etherscan", browserURL: "https://testnet.avascan.info/blockchain/wagmi" } } ] }, networks: { wagmi: { url: 'https://subnets.avax.network/wagmi/wagmi-chain-testnet/rpc', accounts: [process.env.PRIVATE_KEY] }, }, }; export default config;