Multi-Chain Crypto Wallet API

A high-performance, secure REST API for generating cryptocurrency wallets across 30+ blockchain networks. Built with Rust for maximum performance and security. A TrustWallet Wallet-Core alternative (trying to be) Please support!!

🚀 Features

• 30+ Blockchain Support: Generate wallets for Bitcoin, Ethereum, Solana, Cosmos ecosystem, and many more
• BIP39 Mnemonic Generation: Support for multiple languages (English, Japanese, Korean, Spanish, Chinese, French, Italian, Czech, Portuguese)
• HD Wallet Support: Hierarchical Deterministic wallet generation following BIP32/BIP44 standards
• Symbol-Based API: Simple, intuitive API using currency symbols (BTC, ETH, etc.)
• Multiple Address Formats: Automatic support for chains with multiple address types (e.g., Bitcoin Legacy/SegWit/Taproot)
• High Performance: Built with Rust and Actix-web for blazing-fast response times
• Secure: No private keys are stored; everything is generated on-the-fly
• CORS Enabled: Ready for web application integration

📋 Supported Blockchains

Symbol	Blockchain	Address Format
BTC	Bitcoin	Legacy (1...), SegWit (bc1q...), Taproot (bc1p...)
ETH	Ethereum	0x...
SOL	Solana	Base58
XRP	Ripple	r...
DOGE	Dogecoin	D...
ATOM	Cosmos	cosmos1...
OSMO	Osmosis	osmo1...
JUNO	Juno	juno1...
SCRT	Secret Network	secret1...
SEI	Sei	sei1...
TIA	Celestia	celestia1...
INJ	Injective	inj1...
XTZ	Tezos	tz1...
NEAR	NEAR Protocol	Hex string
TRX	TRON	T...
SUI	Sui	0x...
AKT	Akash	akash1...
FIL	Filecoin	f1...

🛠️ Installation

Prerequisites

• Rust 1.75 or higher
• Cargo

Clone and Build

git clone https://github.com/yourusername/multichain-wallet.git
cd multichain-wallet
cargo build --release

Run

# Development
cargo run

# Production
./target/release/crypto-wallet-api

Docker

# Build
docker build -t multichain-wallet .

# Run
docker run -p 8080:8080 multichain-wallet

📖 API Documentation

Base URL

http://localhost:8080/api/v1

Endpoints

1. Health Check

GET /health

Response:

{
  "status": "healthy",
  "version": "0.1.0",
  "timestamp": 1703123456
}

2. Generate Mnemonic

POST /mnemonic/generate

Request:

{
  "language": "english",
  "word_count": 12
}

Response:

{
  "mnemonic": "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
  "language": "english",
  "word_count": 12,
  "generated_at": 1703123456
}

3. Validate Mnemonic

POST /mnemonic/validate

Request:

{
  "mnemonic": "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
  "language": "english"
}

Response:

{
  "valid": true,
  "word_count": 12,
  "message": "Valid mnemonic phrase"
}

4. Generate Wallet

POST /wallet/generate

Request:

{
  "mnemonic": "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
  "passphrase": "",
  "index": 0,
  "symbol": "ETH"
}

Response (Single address for most coins):

{
  "address": "0x71C7656EC7ab88b098defB751B7401B5f6d8976F",
  "chain_name": "Ethereum",
  "chain_symbol": "ETH",
  "address_type": "ethereum",
  "derivation_path": "m/44'/60'/0'/0/0",
  "index": 0,
  "public_key": "02b4632d08485ff1df2db55b9dafd23347d1c47a457072a1e87be26896549a8737",
  "private_key": "4c0883a69102937d6231471b5dbb6204fe5129617082792ae468d01a3f362318"
}

Response (Array for BTC):

[
  {
    "address": "1BvBMSEYstWetqTFn5Au4m4GFg7xJaNVN2",
    "chain_name": "Bitcoin",
    "chain_symbol": "BTC",
    "address_type": "bitcoin_legacy",
    "derivation_path": "m/44'/0'/0'/0/0",
    "index": 0,
    "public_key": "...",
    "private_key": "..."
  },
  {
    "address": "bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4",
    "chain_name": "Bitcoin",
    "chain_symbol": "BTC",
    "address_type": "bitcoin_segwit",
    "derivation_path": "m/84'/0'/0'/0/0",
    "index": 0,
    "public_key": "...",
    "private_key": "..."
  },
  {
    "address": "bc1p5d7rjq7g6rdk2yhzks9smlaqtedr4dekq08ge8ztwac72sfr9rusxg3297",
    "chain_name": "Bitcoin",
    "chain_symbol": "BTC",
    "address_type": "bitcoin_taproot",
    "derivation_path": "m/86'/0'/0'/0/0",
    "index": 0,
    "public_key": "...",
    "private_key": "..."
  }
]

5. Batch Generate Wallets

POST /wallet/batch

Request:

{
  "mnemonic": "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
  "passphrase": "",
  "start_index": 0,
  "count": 5,
  "symbols": ["BTC", "ETH", "SOL"]
}

6. Get Supported Languages

GET /languages

7. Get Supported Wallet Types

GET /wallet/types

🔧 Configuration

Environment variables:

# Host and Port
APP_HOST=0.0.0.0
APP_PORT=8080

# Logging
APP_LOG_LEVEL=info

🏗️ Architecture

src/
├── api/
│   ├── handlers.rs    # HTTP request handlers
│   └── models.rs      # Request/Response models
├── chains/
│   ├── bitcoin.rs     # Bitcoin implementation
│   ├── ethereum.rs    # Ethereum implementation
│   ├── cosmos.rs      # Cosmos ecosystem
│   └── ...           # Other chain implementations
├── core/
│   ├── chain_info.rs  # Chain metadata
│   ├── traits.rs      # Core traits
│   └── types.rs       # Core types
├── services/
│   └── wallet.rs      # Wallet generation service
├── errors.rs          # Error handling
├── config.rs          # Configuration
└── main.rs           # Application entry point

🔐 Security Considerations

1. No Storage: Private keys are never stored - they're generated on-demand
2. Secure Random: Uses cryptographically secure random number generation
3. Standard Compliance: Follows BIP32/BIP39/BIP44 standards
4. Memory Safety: Built with Rust for memory safety guarantees

🤝 Contributing

Please see CONTRIBUTING.md for details on our code of conduct and the process for submitting pull requests. - will be added soon

📄 License

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

🙏 Acknowledgments

• rust-bitcoin for Bitcoin support
• ed25519-dalek for Ed25519 curves
• bip39 for mnemonic generation
• All the amazing Rust crypto libraries that make this possible

📞 Support

• Create an issue for bug reports or feature requests
• Will keep adding new chains

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Made with ❤️ for the crypto community.