What We're Building

An automated subscription billing system demonstrating how blockchain-native recurring payments work with LazorKit integration:

• ✓Subscribe with minimal friction (gasless flow via LazorKit)
• ✓Get charged automatically every billing cycle (no user signature needed!)
• ✓Cancel anytime with rent refunds
• ✓View subscription history and payment details

The Core Innovation: Token Delegation

The key mechanism enabling automatic recurring payments is Solana's token delegation:

// During subscription, user delegates once
const delegateIx = createApproveInstruction(
  userTokenAccount,
  merchantDelegate,
  userWallet,
  amountToDelegate
);

// Now merchant can charge automatically
// without requiring signatures! 🎉

After this one-time approval with Face ID, the merchant can charge the user automatically without requiring signatures for each payment.