FestChain

FestChain is a Web3 platform that enables peer-to-peer trading of prepaid festival cards. Festival-goers often end up with leftover balances, and FestChain turns that into value: users can list cards for sale, find buyers, and complete transactions securely through decentralized crypto wallet integration.

The interface embodies the festive Oktoberfest vibe — fun, colorful, and friendly — while maintaining a functional and responsive design.

FestChain’s frontend is built with Flutter for a fast, cross-platform user experience, while the backend runs on Golang, known for its concurrency and efficiency. Authentication is handled through Web3 wallets.

We integrated wallet-based authentication directly into a Flutter app. Making wallet interactions seamless in Flutter app was a bit hacky, but it ultimately worked beautifully.