Getting started with Solidity and Foundry. We will complete a TodoList smart contract, deploy it to the Base blockchain on the Sepolia testnet and interact with the smart contract through base scan.
Before we start there are a few things you need to do.
- Create Coinbase Wallet - https://www.coinbase.com/wallet/articles/getting-started-extension#create-a-new-wallet
- Fund wallet with Sepolia ETH from Faucet - https://www.alchemy.com/faucets/ethereum-sepolia
- Go to https://basescan.org/register and sign up
- Then go and create an API key at: https://basescan.org/myapikey
- Create a file called
.envand copy the content from.env.example - Copy your key into BASESCAN_API_KEY in the
.envfile. - Install Foundry
curl -L https://foundry.paradigm.xyz | bash - VSCode setup: https://book.getfoundry.sh/config/vscode
- If you are on Windows look into the remappings.txt file and update the paths. BASESCAN_API_KEY
Setting up deployer
🚨 You will need the private key from your coinbase wallet (NEVER show this to anyone EVER!). 🔐 When you have your private key run the command below to store your private key in an encrypted state on your local machine.
cast wallet import deployer --interactive
To get your private key go to your CoinBase Wallet > Settings > Show Private Key. Paste it to the terminal after running the command and then set a password.
You have to run source .env to read the .env values. Then you can deploy by running:
forge create ./src/TodoList.sol:TodoList --rpc-url $BASE_SEPOLIA_RPC --account deployer --verify --etherscan-api-key $BASESCAN_API_KEY
To checkout your deployed contract go to: https://sepolia.basescan.org/address and search for the contracts address that you got from the terminal when you ran forge create.
forge verify-contract 0x8ab1ed35bf801f4e4a326076dbed122b40747fc9 ./src/CoinFlip.sol:CoinFlip --etherscan-api-key $BASESCAN_API_KEY --chain-id 84532 --watch
# Install Solmate and OpenZeppelin contracts as dependencies
forge install transmissions11/solmate Openzeppelin/[email protected]
forge buildforge testforge test --debug testCreateTaskforge fmtforge snapshotanvilcast <subcommand>forge --help
anvil --help
cast --help