contracts

Smart Contract

After making any changes to contracts, remember to compile using yarn build

Then deploy to the networks you want, by running yarn deploy <network>

When deploying to localhost make sure the localhost node is running, which is called using yarn node:localhost

Etherscan verification

To try out Etherscan verification, you first need to deploy a contract to an Ethereum network that's supported by Etherscan, such as Ropsten.

In this project, copy the .env.example file to a file named .env, and then edit it to fill in the details. Enter your Etherscan API key, your Ropsten node URL (e.g. from Alchemy), and the private key of the account which will send the deployment transaction. With a valid .env file in place, first deploy your contract:

yarn deploy ropsten

Then, copy the deployment address and paste it in to replace DEPLOYED_CONTRACT_ADDRESS in this command:

npx hardhat verify --network ropsten DEPLOYED_CONTRACT_ADDRESS "Hello, Hardhat!"

Performance optimizations

For faster runs of your tests and scripts, consider skipping ts-node's type checking by setting the environment variable TS_NODE_TRANSPILE_ONLY to 1 in hardhat's environment. For more details see the documentation.