Praise Board

Direct wallet tips with a live, on-chain supporter wall — built for the Zero to One: Tech Builder Series problem The Praise Board.

Commuters connect MetaMask, send a small Sepolia ETH tip with a note, and see their name appear on a verifiable wall. Tips go straight to the recipient's wallet — no platform in the middle.

Stack

• Smart contract: Solidity 0.8 + Hardhat (PraiseBoard.sol)
• Frontend: Next.js 16, wagmi, viem, Tailwind CSS
• Network: Ethereum Sepolia

Quick start

1. Install

npm install

2. Configure environment

Copy .env.example to .env and .env.local:

cp .env.example .env
cp .env.example .env.local

Fill in:

Variable	Purpose
PRIVATE_KEY	Deployer wallet (with Sepolia ETH from a faucet)
RECIPIENT_ADDRESS	Ifeoma's wallet — receives every tip
SEPOLIA_RPC_URL	Sepolia RPC (QuickNode, Alchemy, etc.)
NEXT_PUBLIC_SEPOLIA_RPC_URL	Same RPC for the frontend
NEXT_PUBLIC_CONTRACT_ADDRESS	Set after deploy (step 3)

3. Deploy contract

npm run compile
npm run deploy:sepolia

Copy the printed address into NEXT_PUBLIC_CONTRACT_ADDRESS in .env.local.

4. Run the app

npm run dev

Open http://localhost:3000, connect MetaMask on Sepolia, and send a test tip.

How trust works

• Every wall entry comes from a PraiseAdded event on the deployed contract.
• Tips are forwarded to recipient in the same transaction — nothing sits in the contract.
• The frontend reads on-chain state; entries cannot be faked without a real transaction.

Submit to Loops

loops auth login --provider github
loops project create --event zero-to-one-tech-builder-series \
  --name "Praise Board" \
  --repoUrl https://github.com/YOUR_USER/praiseboard \
  --tagline "Direct wallet tips with a live on-chain praise wall"
loops evaluate --event zero-to-one-tech-builder-series --problem thank-you-wall

License

MIT