DrBitcoin

Description

DrBitcoin is a centralized Bitcoin payment system designed specifically for Brazilian medical professionals, enabling secure Bitcoin payments with automatic fee processing and perfect transaction tracking. The platform provides a complete solution for doctors to receive cryptocurrency payments while maintaining full compliance with tax requirements.

Key Features

• Centralized Payment Gateway: All payments flow through company wallet for perfect tracking and automatic distribution to doctors.
• Automatic Fee Distribution: 98.5% automatically transferred to doctor, 1.5% retained as platform fee with instant processing.
• Non-Custodial Doctor Wallets: Doctors maintain full control of their Bitcoin wallets with client-side key generation.
• Real-time Blockchain Monitoring: Payment detection every 30 seconds using Mempool.space API for instant confirmation.
• Unique QR Code System: Each transaction has unique identifier for zero ambiguity and complete audit trail.

Technologies Used

• Frontend: React 18, Vite, TypeScript, Tailwind CSS, Zustand for state management
• Backend: Node.js, Express, TypeScript, Prisma ORM, SQLite, JWT Authentication
• Bitcoin Integration: BitcoinJS-lib, BIP39/BIP84 wallet generation, SegWit (bech32) addresses
• APIs: Mempool.space for blockchain monitoring, CoinGecko for BTC/BRL price feeds
• Architecture: Monorepo structure with shared packages for Bitcoin utilities and TypeScript types

Implementation Highlights

• Security First: Private keys never touch servers, wallets created in user’s browser, encrypted storage for sensitive data.
• Tax Compliance: Perfect transaction history for accounting purposes with complete audit trail and blockchain proof.
• Optimized Fees: Using SegWit addresses for lower network fees and faster transaction confirmation.
• Medical-Focused UI: Clean, professional interface designed specifically for healthcare professionals.