Casino-on-chain
Real-time multiplayer casino platform built on Yellow Network's state channels (ERC-7824)
Demo
About
Casino-on-Chain is a real-time multiplayer casino platform built on Yellow Network's state channels (ERC-7824). Our MVP features a coin flip game where players: - Deposit USDC into Yellow Network channels - Play instant, gas-free games against other players - Win/lose chips off-chain with zero fees - Cash out anytime with on-chain settlement Why State Channels? Traditional on-chain gaming suffers from high gas fees ($10-50/tx) and slow confirmations. State channels enable thousands of games per second with instant settlements and zero gas fees during gameplay. Tech Stack: - Frontend: React + Vite + MetaMask - Backend: Node.js + WebSocket server - Blockchain: Yellow Network (ERC-7824) + Ethereum + USDC The game demonstrates how state channels can power real-time multiplayer gaming while maintaining blockchain security. Future plans include Blackjack, Poker, Roulette, and a universal chip system across all games.
How it's made
Architecture: - React frontend connects to MetaMask for wallet integration - yellowService.js handles Yellow Network state channel operations (authentication, balance queries, channel management) - WebSocket server coordinates real-time multiplayer gameplay and game state synchronization - Players sign once to open Yellow channels, then play unlimited games gas-free Key Technologies: 1. Yellow Network SDK - State channel protocol implementation 2. WebSocket (ws library) - Real-time bidirectional communication for game lobby and moves 3. React + Vite - Fast development and smooth UI 4. MetaMask - Wallet connection and transaction signing Challenges & Solutions: - Challenge: React closure issues with chip calculations Solution: Used useRef to avoid stale state in async callbacks - Challenge: Real-time game synchronization across browsers Solution: WebSocket pub-sub pattern for instant game state updates - Challenge: Yellow Network app session API still in development Solution: Simulated game sessions locally while maintaining real authentication and balance queries The project demonstrates production-ready architecture for state channel gaming, with authentication and balance management fully integrated with Yellow Network's ClearNode.