Telegram Stars: Payment Gateway

Designed a high-security automated marketplace for Telegram Stars. The focus was on financial integrity. I leveraged Prisma Transactions to ensure atomicity for every order—inventory deduction and status updates happen in lockstep, eliminating race conditions common in crypto payments.

Built on Next.js 14 App Router, the application uses Server Actions to keep business logic strictly backend-side. The CryptoBot integration is fortified with cryptographic signature verification for all incoming webhooks. I also implemented a singleton pattern for the Telegram API to reduce connection overhead, making user validation distinctively fast.