A revolutionary iOS app for collaborative Bitcoin savings with trusted friends using multisig wallets and Nostr protocol.
✅ Build Status: SUCCESSFUL
✅ All Compilation Errors: RESOLVED
✅ UI/UX Styling: COMPLETE
✅ Core Features: IMPLEMENTING
🔄 BDK Integration: COMING TOMORROW
- Multisig Wallets: 2-of-3, 3-of-5 configurations with threshold signing
- PSBT Coordination: Advanced transaction signing with member coordination
- Lightning Network: NWC (Nostr Wallet Connect) integration for instant deposits
- Address Generation: Secure Bitcoin address generation and validation
- Fee Management: Dynamic fee calculation with RBF support
- End-to-End Encryption: NIP-44 compliant encrypted group messaging
- Group Coordination: Custom event types (1000-1009) for group activities
- Invite System: QR-based group invitations with expiration controls
- Multi-Relay Support: Redundant relay connections with auto-failover
- Two-Tier Encryption: AES-256-GCM with HKDF key derivation
- iOS Keychain: Hardware-backed secure key storage
- Optional Biometrics: Face ID/Touch ID with passcode fallback
- Zero Knowledge: No custody or control of user funds
- Modern Dark Theme: Professional dark mode interface with consistent styling
- Real-time Updates: Live balance and progress tracking
- Push Notifications: Smart milestone and signing alerts
- QR Code Integration: Camera scanning and generation
- Import Key Flow: Streamlined hardware wallet key import with QR/Manual options
Satsat/
├── Core/
│ ├── Security/ # Encryption, Keychain, Biometrics
│ ├── Bitcoin/ # Multisig, PSBT, Address Management
│ ├── Lightning/ # NWC Integration, Invoice Generation
│ ├── Nostr/ # Client, Encryption, Event Management
│ ├── Data/ # Core Data, Encrypted Storage
│ └── UI/ # Design System, Components
├── Features/
│ ├── Groups/ # Group Creation, Management
│ ├── Wallet/ # Send, Receive, Balance Views
│ ├── Lightning/ # Lightning Deposits, NWC Connection
│ ├── PSBT/ # Transaction Signing, Coordination
│ └── Compliance/ # App Store Compliance, Onboarding
├── Services/
│ ├── GroupManager/ # Group Lifecycle Management
│ ├── MessageManager/ # Encrypted Messaging
│ └── NotificationService/ # Push Notifications
└── Testing/
└── ComprehensiveTestSuite/ # 30+ Automated Tests
- Personal Data: User-specific AES-256-GCM encryption
- Group Data: Shared encryption for financial coordination
- Context-Specific Keys: HKDF key derivation for data isolation
- Hardware Security: iOS Keychain with Secure Enclave protection
- Multisig Standards: BIP-48 derivation paths, P2WSH scripts
- PSBT Workflow: Secure transaction signing and coordination
- Network Security: Testnet/mainnet support with proper validation
- Key Management: Hardware-backed private key storage
- Zero Custody: Users connect their own Lightning wallets
- Universal Support: Alby, Zeus, Mutiny, phoenixd, LNbits, Voltage
- Group Contributions: Lightning invoices for group goal funding
- Perfect Compliance: No custodial Lightning infrastructure
- Onchain Only: Users without Lightning wallets use Bitcoin only
- No Shared Infrastructure: Complete privacy between deployments
- Educational Positioning: App Store compliant educational tool
-
Learning Tool: Positioned as Bitcoin education platform
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External Service Links: Proper linking to licensed Bitcoin services
-
Risk Disclosures: Comprehensive financial risk warnings
-
Age Restriction: 17+ with mandatory age verification
-
No Custodial Services: Users manage their own keys and funds
-
External Service Integration: Strike, Coinbase, and other exchanges
-
Compliance Documentation: Complete regulatory compliance package
-
Privacy-First Design: Zero data collection beyond app functionality
- iOS 18.5+ Support: Latest iOS features and security
- App Store Guidelines: Full compliance with Apple's requirements
- Privacy Manifest: Complete privacy transparency
- Security Best Practices: Enterprise-grade security implementation
- Background Colors:
backgroundPrimary(black),backgroundSecondary(dark gray) - Text Colors: White text with proper contrast ratios
- Accent Colors: Orange (
#FF9500) for primary actions - Component Styling: Consistent rounded corners and spacing
- Wallet Cards: Black background with orange borders
- Search Bars: Dark gray background with white text
- Import Key Flow: Streamlined QR/Manual options
- Receive View: Clean interface with address display and copy functionality
- 🔄 BDK Integration: Bitcoin Development Kit for enhanced wallet functionality
- 🔄 Advanced Transaction Features: Improved PSBT handling
- 🔄 Performance Optimizations: Faster wallet operations
- Xcode 16+: Latest Xcode version
- iOS 18.5+: Target iOS version
- Swift 5.9+: Latest Swift language features
- macOS 14+: Required for development
# Clone the repository
git clone https://github.com/yourusername/satsat.git
cd satsat
# Open in Xcode
open Satsat.xcodeproj
# Build and run
# Use Xcode's build system for development- Bundle Identifier:
SatsNot.Bits - Development Team: Configure in Xcode
- Signing: Automatic signing for development
This project is licensed under the MIT License - see the LICENSE file for details.
Built with ❤️ for the Bitcoin community