QuietGain DCA is a privacy‑first Bitcoin DCA app: stack sats via Nostr with BIP‑352 Silent Payments, use Lightning stable channels to keep your fiat exposure steady when BTC pumps, and settle long-term wealth on P2QRH addresses generated with ML-DSA (CRYSTALS-Dilithium) to remain secure against quantum attacks.

• Multi-Currency Support: Buy Bitcoin in USD, IDR (Indonesian Rupiah), or INR (Indian Rupee)
• Direct Lightning Payments: Pay directly to Lightning addresses via YakiHonne wallet
• Silent Payments: Receive Bitcoin privately using BIP-352 Silent Payments
  • Recommended wallet: Silentium Wallet for Silent Payment address generation
• Smart Widget Handler: Native payment integration with YakiHonne using smart-widget-handler SDK

Lock in your Bitcoin value using Lightning Network stable channels. When BTC price increases, protect your gains by depositing into stable channels that maintain USD-equivalent value.

Scenario: You've accumulated 0.5 BTC through DCA purchases

Without Stable Channel: 0.5 BTC @ $67,200 = $33,600 (-$8,400 from peak)
With Stable Channel: $20,160 + $16,800 = $36,960 (+$3,360 saved! ✅)

1. Deposit: When BTC price rises, deposit a portion into Lightning stable channels
2. Lock Value: Your deposited BTC maintains its USD value regardless of price changes
3. Withdraw: Exit the channel anytime to convert back to regular Bitcoin
4. Rebalance: Optimize channel capacity for better Lightning routing

• Optimized for YakiHonne playground
• Progressive Web App (PWA) support
• Touch-friendly interface
• Responsive layout for all screen sizes

• Silent Payments (BIP-352): Receive Bitcoin without address reuse
  • Generate addresses with Silentium Wallet
  • No on-chain linkability between transactions
  • Enhanced privacy for all DCA purchases
• Nostr Integration: Your identity and history on decentralized relays
• Lightning Payments: Fast, low-fee Bitcoin transactions

As Bitcoin evolves, we're preparing for quantum-resistant cryptography:

ML-DSA (Module-Lattice-Based Digital Signature Algorithm) - FIPS-204 standard for post-quantum signatures. See implementation example: btc-vision/noble-post-quantum

This ensures your Bitcoin transactions remain secure even against quantum computers. The noble-post-quantum library provides:

• ML-DSA: Lattice-based signatures (FIPS-204)
• ML-KEM: Key encapsulation mechanism (FIPS-203)
• SLH-DSA: Hash-based signatures (FIPS-205)

Integration planned for future Nostr event signing and Bitcoin transaction security.

• Node.js 18+
• Nostr browser extension (nos2x, Alby)
• Lightning wallet with LNURL support

# Clone the repository
git clone https://github.com/Vib-UX/dca-bitcoin.git
cd dca-bitcoin

# Install dependencies
npm install

# Start development server
npm run dev

Open http://localhost:5173 in your browser.

1. Open YakiHonne app
2. Navigate to Widget Playground
3. Load the widget using widget.json configuration
4. Start DCA-ing Bitcoin with native payments!

• React 18 - UI framework
• Redux Toolkit - State management
• React Router - Navigation
• Vite - Build tool & dev server

• NDK (@nostr-dev-kit/ndk) - Nostr Development Kit
• nostr-tools - Core Nostr utilities
• Dexie - IndexedDB cache for Nostr events

• smart-widget-handler - Native payment integration for YakiHonne
• LNURL - Lightning address support
• BIP-352 Silent Payments - Privacy-preserving Bitcoin reception

• wss://nostr-01.yakihonne.com
• wss://nostr-02.yakihonne.com
• wss://relay.damus.io
• wss://relay.nostr.band
• wss://nos.lol

User Input → Calculate Sats → Request Payment → YakiHonne Approval → Success

Example: Buy $100 USD of Bitcoin

• BTC Price: $84,000
• Amount in BTC: 0.00119048 BTC (119,048 sats)
• Payment to: [email protected]
• Silent Payment Address: Receive Bitcoin privately

Accumulate BTC → Price Rises → Deposit to Stable → Lock USD Value → Rebalance

Strategy:

1. DCA into Bitcoin regularly
2. When BTC pumps 30-50%, move 40% to stable channels
3. Lock in gains at higher prices
4. Buy back BTC when price dips

All DCA purchases are published as Nostr events (kind 31111):

{
  "kind": 31111,
  "content": {
    "fiatAmount": 100,
    "currency": "USD",
    "btcAmount": 0.00119048,
    "btcPrice": 84000,
    "silentPaymentAddress": "sp1...",
    "timestamp": 1735868876
  }
}

• Automate Bitcoin accumulation with DCA
• Track all purchases on Nostr
• Protect gains with stable channels during bull runs

• Use Silent Payments for anonymous Bitcoin reception
• No address reuse, no on-chain tracking
• Recommended: Silentium Wallet for Silent Payment addresses

• Instant payments via Lightning Network
• Low fees (<1%)
• Native YakiHonne integration

• Identity and history on Nostr
• Decentralized, censorship-resistant
• Portable across clients

Create a .env file:

VITE_DEFAULT_LIGHTNING_ADDRESS=[email protected]
VITE_ENABLE_MARKETPLACE=false

Edit widget.json for YakiHonne integration:

{
  "name": "DCA Bitcoin",
  "version": "1.0.0",
  "permissions": ["payment", "nostr"]
}

The app is optimized for mobile devices:

• Viewport: Configured for mobile screens
• Touch: Large, touch-friendly buttons
• Responsive: Adapts to all screen sizes
• PWA: Install as standalone app
• Manifest: public/manifest.json

# Run tests
npm test

# Run linter
npm run lint

# Build for production
npm run build

Contributions welcome! Please:

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Submit a pull request

MIT License - see LICENSE file

• YakiHonne: https://yakihonne.com - Nostr client with Smart Widget Handler
• Smart Widget Handler: https://github.com/Vib-UX/smart-widget-handler - Native payment SDK
• Silentium Wallet: https://github.com/AndySchroder/silentium - Silent Payment wallet
• BIP-352: https://github.com/bitcoin/bips/blob/master/bip-0352.mediawiki - Silent Payments spec
• Noble Post-Quantum: https://github.com/btc-vision/noble-post-quantum - Future quantum-resistant cryptography
• Nostr: https://nostr.com - Decentralized social protocol

• Built with NDK
• Lightning integration via smart-widget-handler
• Inspired by Bitcoin DCA strategies and privacy best practices
• Future-ready with noble-post-quantum for ML-DSA integration

⚡ Start DCA-ing Bitcoin today with privacy, Lightning speed, and gain protection!