The original title is "Loyalty Ledger: storing fan check-in streaks on Solana blockchain"

Short summary

The author built Loyalty Ledger, a fan loyalty tracker that stores check-in streaks and badges on Solana instead of a centralized database. Fans connect a wallet, pick a team, and check in via real on-chain transactions that create program-owned accounts. The FIFA World Cup path is fully functional with real chain writes, badge minting, and on-chain leaderboards.

• •Fan loyalty streaks stored on Solana as program-owned accounts, not app databases
• •FIFA World Cup path is fully working with real on-chain check-ins and SPL badge minting
• •Built with Anchor; uses PDA keyed to wallet, sport, and team for each fan record

Generated with AI, which can make mistakes.