How do I deploy to Ethereum mainnet from Hardhat?

Question

So I have followed multiple tutorials on getting started with smart contract development in Ethereum and have read many, many pages on security and development in OpenZeppelin. How exactly do I go about actually deploying my project to the Ethereum mai.net using Hardhat though? I can only find info on deploying to test.networks!

Answer 1

Expand the networks section of the config file.

Example configuration:

mainnet: {
    url: "https://mainnet.infura.io/v3/<your_infura_key>", // or any other JSON-RPC provider
    accounts: [<your_private_key>]
}

Instead of specifying the private key directly, you can also specify the mnemonic phrase.

For more details, see the docs .

Answer 2

In the context of hardhat, mai.net, tes.net or any other.network work in the same way. These are just the tags. you can define multiple.networks in hardhat config

module.exports = {
    solidity: "0.8.9",
    defaultNetwork: "hardhat",
    networks: {
        hardhat: {},
        rinkeby: {
            url: RAPI_URL,
            accounts: [RINKEBY_WALLET_ADDRESS_PRIVATE_KEY]
        },
        mainnet: {
            url: ETH_MAINNET_RPC_URL,
            accounts: [MAINNET_WALLET_ADDRESS_PRIVATE_KEY]
        },
    },
}

then for deploy use the command like this

npx hardhat run scripts/deploy.js --network rinkeby

or

npx hardhat run scripts/deploy.js --network mainnet