Cavopay — Stablecoin Neobank & Payment Account on Arc

Settlement Network: Arc Testnet
Core Assets: USDC & EURC

Cavopay is a stablecoin-native payment account on Arc that lets users, creators, freelancers, and small businesses send, receive, and manage USDC and EURC through usernames, payment links, QR codes, and Circle-powered in-app wallets.

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Key Features

• Web2 Onboarding: Sign in with Google Auth or Email OTP — no seed phrases or web3 browser extensions required.
• Circle In-App Wallets: Automatic developer-controlled wallet creation for every user.
• Public @username Handles: Claimable payment handles (e.g. /u/alex) for easy stablecoin transfers.
• Payment Links & QR Checkout: Sharable checkout links (/pay/:linkId) and QR codes for one-off and service payments.
• In-App Transfers & PIN Security: Send USDC/EURC directly to usernames or wallet addresses, protected by a 4-digit Payment PIN.
• Arc Settlement: Fast finality and USDC-denominated gas powered by Arc Testnet.
• Cross-Chain Bridge: Circle App Kit & CCTP integration to bridge USDC from external networks.

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Technology Stack

• Frontend: React 19, Vite, TypeScript, React Router, Wagmi, Viem, Lucide Icons, QR rendering.
• Backend: Node.js, Express, Supabase (PostgreSQL with RLS), Circle Developer Wallet SDK.
• Smart Contracts: Solidity, Hardhat, OpenZeppelin payment settlement contracts.

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Local Setup & Development

1. Frontend Setup

cd frontend
npm install
npm run dev

2. Backend Setup

cd backend
npm install
npm run dev

3. Smart Contracts

cd contracts
npm install
npx hardhat compile

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License

MIT License