Smart contractsLiveEthereum
KatanaInu play-to-earn reward engine
An on-chain reward distribution engine that pays KATA tokens to eligible players after every match.
- My role
- Backend, smart contracts, and client integration
- Year
- 2025
- Status
- Live
- Context
- KatanaInu, a blockchain-integrated game
The problem
The game backend produced match results off-chain, but rewards had to be paid on-chain in KATA tokens, fairly and without wasting gas on players who did not qualify.
What I built
- Built a Node.js service that consumes match results from the game backend over NATS and computes player eligibility and reward amounts.
- Wrote the reward distribution smart contracts and designed the payout flow to keep gas costs low.
- Integrated thirdweb wallet connection in the Next.js client so players can view and claim rewards.
- Stored reward runs in MongoDB for auditability and to prevent double payouts.