A next-generation Bitcoin Lightning Network wallet built for Android, leveraging the power of the Lightning Dev Kit (LDK) to deliver fast, secure, and scalable payment solutions.

Vaultix is a comprehensive mobile wallet application that demonstrates the integration of Lightning Network capabilities on Android devices. Built with Kotlin and powered by LDK's robust infrastructure, it provides users with a seamless experience for both on-chain Bitcoin transactions and off-chain Lightning payments.

The application utilizes the LDK Android AAR package, which provides native Kotlin language bindings for the Lightning Dev Kit. This integration allows for:

• Native Performance: Optimized C++ core with Kotlin-friendly APIs
• Memory Safety: Garbage-collected bindings prevent memory leaks
• Cross-Platform Compatibility: Supports ARM64 and x86_64 architectures

• Bitcoin Wallet Management: Full on-chain wallet capabilities using BDK
• Lightning Network Operations: Complete channel lifecycle management
• Peer Connectivity: Discover, connect, and manage Lightning Network peers
• Payment Processing: Send and receive Lightning payments instantly

• Node Identity Management: Generate and display unique node identifiers
• Channel Operations: Open, monitor, and close payment channels
• Payment Routing: Efficient payment path discovery and execution
• Network Monitoring: Real-time peer and channel status tracking

• Android Studio Arctic Fox or later
• Android SDK API level 24+
• Kotlin 1.5+

1. Clone this repository
2. Download the latest LDK Android AAR from official releases
3. Place the AAR file in the app/libs directory
4. Build and run the project

dependencies {
    implementation fileTree(include: ['*.aar'], dir: 'libs')
    // Additional dependencies as needed
}

For local testing and development, set up a Bitcoin regtest environment. Follow the comprehensive guide at Thunderbiscuit's Regtest Tutorial for complete setup instructions.

import org.ldk.structs.*

// Initialize LDK components
val channelManager = ChannelManager(...)
val peerManager = PeerManager(...)

// Connect to a Lightning node
peerManager.connect_node(nodeId, socketAddr)

// Open a payment channel
channelManager.open_channel(nodeId, channelValue, pushMsat, channelConfig)

• Architecture Support: ARM64 and x86_64 builds included
• Memory Management: Automatic garbage collection prevents leaks
• Performance: Optimized for mobile devices with efficient resource usage
• Security: Industry-standard cryptographic operations

We welcome contributions to enhance Vaultix's capabilities. Please ensure all submissions follow the project's coding standards and include appropriate tests.