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Knight Shield

Knight Shield is the first independent privacy-first mobile wallet for the Midnight Network. It provides real privacy guarantees through zero-knowledge proofs, not just mixing or obfuscation.

What is Knight Shield?​

Knight Shield is a React Native mobile wallet that goes beyond basic send/receive functionality. It includes three Ghost Features — GhostCloak, GhostTracking, and GhostShard — that protect users against on-chain surveillance, timing analysis, and single-point-of-failure seed storage.

Key Features​

  • GhostCloak — Unlinkable transactions via ZK address obfuscation through a TLS relay
  • GhostTracking — Timing randomization and fee normalization to defeat pattern analysis
  • GhostShard — Shamir Secret Sharing for seed backup across multiple storage locations
  • Native Security — iOS SecureEnclave and Android Keystore for seed storage with secure memory wiping
  • Compact Smart Contracts — 5 contracts handling billing, fee pooling, shard registry, reserves, and tokens
  • TLS Relay Server — WebSocket proxy that decouples wallet identity from Midnight node connections

Monorepo Structure​

knight-shield/
├── packages/
│   ├── core/           # KnightShieldWallet, Ghost feature clients
│   ├── contracts/      # 5 Compact smart contracts
│   ├── native-bridges/ # iOS (Swift) + Android (Kotlin) secure storage
│   ├── relay-server/   # Node.js TLS proxy with WebSocket
│   ├── mobile/         # React Native app (7 screens)
│   └── docs/           # This documentation site
├── scripts/            # Deploy and compile scripts
├── knowledge/          # ADRs and security docs
└── content/            # Build-in-public content pipeline

Revenue Model​

Knight Shield sustains itself through:

  • Dev fee: 0.15% (15 basis points) on all transfers via TransferHelper
  • Session billing: Usage-based fees for relay server sessions
  • Fee reserve: Admin-controlled reserve for fee subsidies during growth

Built on Midnight​

Knight Shield leverages the Midnight Network's native ZK capabilities:

  • Compact language for smart contracts with built-in ZK proving
  • TypeScript SDK (@midnight-ntwrk/*) for wallet and contract interaction
  • Preprod network support with path to mainnet

Next Steps​