Lesson 6 : Api Key error while verifying my contract on Rinkeby network

[iamansingh0]

time: 08:55:00
I have deployed my contract to Rinkeby network, using hardhat. Whiile verifying it, I get this error which is about etherscan API-key:

NomicLabsHardhatPluginError: You are trying to verify a contract in 'rinkeby', but no API token was found for this network. Please provide one in your hardhat config. For example:

{
  ...
  etherscan: {
    apiKey: {
      rinkeby: 'your API key'
    }
  }
}

I've checked my API and its fresh and does not have problem. Also I have used.
This is my hardhat.config.js file

module.exports = {
    defaultNetwork: "hardhat",
    networks: {
        rinkeby: {
            url: RPC_URL,
            accounts: [PRIVATE_KEY],
            chainId: 4,
        },
    },
    solidity: "0.8.8",
    etherscan: {
        apikey: ETHERSCAN_API_KEY,
    }
}

so where is the problem, why can I not verify my contract?

[SantanuDK]

did you declare your api key using process.env.ETHERSCAN_API_KEY ?

[iamansingh0]

yo like this:

const RPC_URL = process.env.RINKEBY_RPC_URL
const PRIVATE_KEY = process.env.RINKEBY_PRIVATE_KEY
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY

[SantanuDK]

try writing it in this format in your dot env file ETHERSCAN_API_KEY = HGKSFIU65FAF65AF6AF313A some times wrting the key inside double quotes doesnt help i also run into the same issue but after removing the double quotes from the key it worked fine for me.

Also try writing it in this format

etherscan: {
    apiKey: process.env.ETHERSCAN_API_KEY,  //apikey is written with camelCase K
  },

this also might be the issue but im not completely sure since im also new to this.

[iamansingh0]

Thanks for your solution tho..

[Nikzadkhan]

thanks SantanuDK i worked for me

[iamansingh0]

I just deleted artifacts and cache folders and re-deployed it and it worked.

[dgbweb3]

apiKEY will cause the error!

apiKey should fix this

This small change worked for me!

[Jay01541]

thanks bro this worked for me.....

[ManiBharathiSS]

you have typed apikey instead of apiKey.
the k was in lowercase
hope this helps

[shubhaminit]

What worked for me is changing:

etherscan: {
apiKey: process.env.ETHERSCAN_KEY
}
to:

etherscan: {
apiKey: {
rinkeby:"ETHERSCAN API KEY HERE",
}
}