Chumbucket

Call a football match with a friend and let the result settle it, on Solana.

Role
Lead developer and product owner. The Flutter app, the Arena backend and the brand.
When
2025 to 2026 · 1st place · TxODDS World Cup Hackathon Nigeria
Stack
Flutter, Dart, Mobile Wallet Adapter, TypeScript, Supabase, Helius, TxLINE
Links
chumbucket.fun, Android APK, App on GitHub, Arena backend

It started as a way to lock SOL on a bet with a friend. It grew into social football predictions: follow callers, copy a call, challenge a friend, and let a TxLINE proof settle it instead of an operator.

  1. A native Flutter app on Solana Mobile Wallet Adapter. Chumbucket never holds anyone's keys.
  2. The friend picker stays quick and readable past seven friends: a sheet that settles properly, with everyone's status at a glance.
  3. The Arena backend runs on-chain pots and one-on-one challenges settled from TxLINE match proofs, with a Supabase social layer and a Helius indexer.
  4. The original friend-challenge escrow runs on Solana mainnet. The escrow program was built with Ubadineke Prince.
185profiles, per project README
15funded challenges, per project README
1stTxODDS World Cup Nigeria
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