AMPD Labs - Open Hackathon 3

Getting started with Solidity and Foundry. We will build a smart contract using a FactoryPattern, deploy it to the Base blockchain on the Sepolia testnet and interact with the smart contract through base scan.

⚙️ Prerequisites

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 .env and copy the content from .env.example
• Copy your key into BASESCAN_API_KEY in the .env file.
• Install Foundrycurl -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

✨Notes (for Base Sepolia Testnet)

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.

🚀 Deployment

forge create ./src/ProfileFactory.sol:ProfileFactory --rpc-url $BASE_SEPOLIA_RPC --account deployer --verify --etherscan-api-key $BASESCAN_API_KEY --broadcast

Verification of contract deployed by contract ✅

# Encode constructor args
cast abi-encode "constructor(string,string,string[])" "test" "test" '[]'

# Verify
forge verify-contract --rpc-url $BASE_SEPOLIA_RPC --compiler-version 0.8.24 \
  --optimizer-runs 200 --constructor-args 0x000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000047465737400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000474657374000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 \
0x294c8bEAD4385040B61C079349609cbA0537614E src/Profile.sol:Profile --etherscan-api-key $BASESCAN_API_KEY