🚀 Digital Asset Exchange Platform

A production-ready, full-featured digital asset exchange platform that transforms gift cards into cryptocurrency with an innovative marketplace, referral system, and blockchain integration.

🎯 Vision

Move beyond simple "gift card for Bitcoin" swaps. We're building a complete ecosystem that captures market share through:

• P2P Marketplace: Users buy/sell gift cards directly with each other
• Instant Wallet Creation: Frictionless onboarding with auto-generated wallets
• AI-Powered Pricing: Dynamic fair market value calculation
• Blockchain Transparency: On-chain verification for all transactions
• Viral Growth: Referral system with rewards and incentives
• Social Impact: Donation features with transparent tracking

📋 Project Structure

gift-card-exchange/
├── backend/
│   ├── config/
│   │   └── db.js                    # MongoDB connection
│   ├── controllers/
│   │   ├── authController.js        # Authentication logic
│   │   ├── cardController.js        # Gift card operations
│   │   ├── cryptoController.js      # Crypto conversion
│   │   ├── referralController.js    # Referral system
│   │   ├── marketplaceController.js # P2P marketplace
│   │   └── donationController.js    # Donation tracking
│   ├── models/
│   │   ├── User.js                  # User schema with wallet
│   │   ├── Card.js                  # Gift card schema
│   │   ├── Transaction.js           # Transaction history
│   │   ├── Referral.js              # Referral tracking
│   │   ├── Listing.js               # Marketplace listings
│   │   └── Donation.js              # Donation records
│   ├── routes/
│   │   ├── authRoutes.js
│   │   ├── cardRoutes.js
│   │   ├── cryptoRoutes.js
│   │   ├── referralRoutes.js
│   │   ├── marketplaceRoutes.js
│   │   └── donationRoutes.js
│   ├── middleware/
│   │   └── authMiddleware.js        # JWT, validation, error handling
│   ├── utils/
│   │   ├── walletProvider.js        # Instant wallet creation
│   │   ├── aiPricing.js             # Dynamic pricing engine
│   │   └── blockchainVerifier.js    # On-chain verification
│   ├── server.js                    # Express app setup
│   ├── .env.example                 # Environment variables
│   └── package.json
├── frontend/                        # React web application
│   ├── src/
│   │   ├── components/
│   │   │   ├── Auth/
│   │   │   ├── Cards/
│   │   │   ├── Crypto/
│   │   │   ├── Marketplace/
│   │   │   ├── Referral/
│   │   │   ├── Donations/
│   │   │   └── Layout/
│   │   ├── context/                 # Global state management
│   │   ├── pages/
│   │   ├── styles/
│   │   └── App.js
│   └── package.json
├── mobile/                          # React Native mobile app
│   ├── src/
│   │   ├── screens/
│   │   ├── components/
│   │   ├── context/
│   │   └── App.js
│   └── package.json
└── README.md

🔑 Key Features

1. Authentication & User Management

• JWT-based authentication
• Email verification
• Two-factor authentication (2FA)
• KYC (Know Your Customer) verification
• Account security with login attempt tracking
• Password reset functionality

2. Gift Card Management

• Upload and store gift cards securely
• Card verification (manual, API, blockchain)
• Conversion history tracking
• Dispute resolution system
• Card expiration monitoring
• Remaining value calculation

3. Crypto Conversion

• Real-time exchange rates (CoinGecko API)
• Support for Bitcoin, Ethereum, Solana
• Dynamic fee calculation
• Transaction history
• Conversion estimation
• Blockchain transaction tracking

4. Instant Wallet Creation

• Auto-generate Solana wallets
• Auto-generate Ethereum wallets
• Secure private key storage
• Wallet validation
• Multi-chain support

5. AI-Powered Pricing Engine

• Brand reputation multipliers
• Expiration proximity discounts
• Card age bonuses
• Seller reputation scoring
• Market supply/demand analysis
• Seasonality factors
• Confidence scoring

6. Blockchain Verification

• Solana transaction verification
• Ethereum transaction verification
• Wallet address validation
• Transaction proof generation
• On-chain transparency
• Confirmation tracking

7. P2P Marketplace (Coming Soon)

• Create and manage listings
• Escrow-based transactions
• Buyer/seller ratings
• Dispute resolution
• Transaction history

8. Referral System (Coming Soon)

• Unique referral codes
• Commission tracking
• Reward distribution
• Referral dashboard
• Performance analytics

9. Donation System (Coming Soon)

• Crypto donations
• Impact tracking
• Transparent blockchain records
• Donation history
• Tax documentation

🛠️ Tech Stack

Backend

• Runtime: Node.js 18+
• Framework: Express.js
• Database: MongoDB
• Authentication: JWT (jsonwebtoken)
• Blockchain:
  • Solana Web3.js
  • Ethers.js
• APIs:
  • CoinGecko (exchange rates)
  • Solana RPC
  • Ethereum RPC
• Security:
  • bcryptjs (password hashing)
  • helmet (security headers)
  • CORS

Frontend (Coming Soon)

• Framework: React 18+
• State Management: Context API
• Styling: Tailwind CSS
• HTTP Client: Axios
• Routing: React Router

Mobile (Coming Soon)

• Framework: React Native
• State Management: Context API
• Navigation: React Navigation

🚀 Getting Started

Prerequisites

• Node.js 18+ and npm
• MongoDB (local or Atlas)
• Solana RPC endpoint
• Ethereum RPC endpoint
• CoinGecko API key (free)

Backend Setup

1. Clone the repository

git clone https://github.com/yourusername/gift-card-exchange.git
cd gift-card-exchange/backend

2. Install dependencies

npm install

3. Configure environment variables

cp .env.example .env
# Edit .env with your configuration

4. Start the server

npm run dev

The server will start on http://localhost:5000

API Endpoints

Authentication

• POST /api/auth/register - Register new user
• POST /api/auth/login - Login user
• GET /api/auth/me - Get current user
• PUT /api/auth/profile - Update profile
• PUT /api/auth/change-password - Change password
• POST /api/auth/logout - Logout

Gift Cards

• POST /api/cards - Upload gift card
• GET /api/cards - Get user's cards
• GET /api/cards/:id - Get single card
• PUT /api/cards/:id - Update card
• DELETE /api/cards/:id - Delete card
• POST /api/cards/:id/verify - Verify card
• POST /api/cards/:id/dispute - Report dispute
• GET /api/cards/:id/history - Get conversion history

Crypto

• GET /api/crypto/rates - Get exchange rates
• POST /api/crypto/convert - Convert to crypto
• GET /api/crypto/balance - Get crypto balance
• GET /api/crypto/history - Get conversion history
• POST /api/crypto/estimate - Estimate conversion
• GET /api/crypto/transaction/:id - Get transaction status

📊 Database Schema

User Model

{
  userId: String (UUID),
  email: String (unique),
  password: String (hashed),
  firstName: String,
  lastName: String,
  wallet: {
    solanaAddress: String,
    ethereumAddress: String,
    walletCreatedAt: Date
  },
  isEmailVerified: Boolean,
  kycStatus: String (pending|verified|rejected),
  twoFactorEnabled: Boolean,
  referralCode: String (unique),
  referredBy: ObjectId,
  balance: {
    usd: Number,
    crypto: Number
  },
  reputation: {
    rating: Number (1-5),
    reviewCount: Number,
    positiveReviews: Number
  },
  preferences: {
    emailNotifications: Boolean,
    pushNotifications: Boolean,
    theme: String (light|dark),
    currency: String
  },
  status: String (active|suspended|deleted),
  createdAt: Date,
  updatedAt: Date
}

Card Model

{
  cardId: String (UUID),
  owner: ObjectId (User),
  brand: String (Amazon|Apple|etc),
  denomination: Number,
  currency: String,
  cardCode: String (encrypted),
  cardCodeHash: String (indexed),
  status: String (active|used|expired|cancelled|disputed),
  isVerified: Boolean,
  expirationDate: Date,
  isListed: Boolean,
  listingId: ObjectId,
  conversionHistory: [{
    timestamp: Date,
    fromCurrency: String,
    toCurrency: String,
    fromAmount: Number,
    toAmount: Number,
    exchangeRate: Number,
    fee: Number,
    transactionId: String
  }],
  blockchainVerification: {
    isVerifiedOnChain: Boolean,
    blockchainNetwork: String,
    transactionHash: String,
    verificationTimestamp: Date
  },
  dispute: {
    isDisputed: Boolean,
    reason: String,
    reportedAt: Date,
    status: String (open|investigating|resolved|rejected)
  },
  createdAt: Date,
  updatedAt: Date
}

Transaction Model

{
  transactionId: String (UUID),
  type: String (card_upload|card_conversion|crypto_transfer|etc),
  status: String (pending|completed|failed|cancelled|disputed),
  initiator: ObjectId (User),
  recipient: ObjectId (User),
  amount: Number,
  currency: String,
  fee: Number,
  netAmount: Number,
  conversion: {
    fromCurrency: String,
    toCurrency: String,
    fromAmount: Number,
    toAmount: Number,
    exchangeRate: Number
  },
  card: ObjectId,
  blockchain: {
    network: String (solana|ethereum|polygon),
    transactionHash: String,
    blockNumber: Number,
    gasUsed: Number,
    confirmations: Number,
    isConfirmed: Boolean
  },
  dispute: {
    isDisputed: Boolean,
    reason: String,
    status: String
  },
  initiatedAt: Date,
  completedAt: Date,
  createdAt: Date,
  updatedAt: Date
}

🔐 Security Features

• Password Hashing: bcryptjs with configurable rounds
• JWT Tokens: Secure token-based authentication
• Account Locking: Automatic lock after failed login attempts
• Email Verification: Required before certain operations
• KYC Verification: Identity verification for compliance
• Two-Factor Authentication: Optional 2FA support
• Private Key Encryption: Secure wallet key storage
• CORS Protection: Cross-origin request validation
• Helmet Security Headers: HTTP security headers
• Rate Limiting: Request rate limiting middleware
• Input Validation: Joi schema validation

💰 Monetization Model

Platform Fees

• Conversion Fee: 2.5% on crypto conversions
• Marketplace Fee: 2.5% on P2P transactions
• Premium Features: Advanced analytics, priority support

Referral Commission

• Referrer Bonus: 5% commission on referred user transactions
• New User Bonus: $10 credit for signing up with referral code

Revenue Streams

1. Transaction fees
2. Referral commissions
3. Premium subscriptions
4. Donation platform fees
5. API access for partners

📈 Growth Strategy

Phase 1: MVP (Weeks 1-4)

• Core authentication
• Gift card upload & conversion
• Basic crypto integration
• Simple UI

Phase 2: Enhancement (Weeks 5-8)

• Marketplace launch
• Referral system
• Instant wallet creation
• Advanced pricing

Phase 3: Scale (Weeks 9-12)

• Mobile app launch
• Donation system
• Advanced analytics
• Marketing campaigns

Phase 4: Expansion (Months 4+)

• Additional cryptocurrencies
• More gift card brands
• International expansion
• Enterprise features

🤝 Contributing

Contributions are welcome! Please follow these steps:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.

👨‍💼 Author

Binx Piierre

• GitHub: @binxpiierre
• Email: [email protected]

🙏 Acknowledgments

• CoinGecko for exchange rate data
• Solana Foundation for blockchain infrastructure
• Ethereum community for smart contract standards
• MongoDB for database solutions

📞 Support

For support, email [email protected] or open an issue on GitHub.

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Built with ❤️ by Binx Piierre

Transform gift cards into crypto. Build wealth. Change lives.