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Silent Swap (Private Swaps)

Silent Swap enables private, hidden cross-chain swaps with enhanced privacy features. Unlike Simple Bridge, Silent Swap requires user authentication and uses facilitator wallets to enable private transactions.

Features

  • Private Transactions - Swaps are hidden from public view
  • SIWE Authentication - Secure Sign-In with Ethereum
  • Facilitator Wallets - HD wallet generation for privacy
  • Multi-Output Support - Send to multiple recipients in one swap
  • Flexible Delivery Methods - Support for SNIP and other delivery methods
  • Order Management - Full lifecycle management of swap orders

How It Works

  1. Authentication - User signs in with Ethereum (SIWE)
  2. Wallet Generation - Generate facilitator wallet from entropy
  3. Quote Request - Get quote with facilitator public keys
  4. Order Creation - Create order with signed authorizations
  5. Execution - Execute deposit and bridge transactions
  6. Completion - Monitor order status

Architecture

User Wallet
    ↓
SIWE Authentication → Auth Token
    ↓
Wallet Generation → Facilitator Group
    ↓
Quote Request → Quote Response
    ↓
Order Creation → Order Response
    ↓
Transaction Execution → Order Completion

Use Cases

  • Private Payments - Send private cross-chain payments
  • Multi-Recipient Swaps - Split one input across multiple outputs
  • Privacy-Focused DApps - Applications requiring transaction privacy
  • Enterprise Solutions - Business use cases requiring hidden transactions

Prerequisites

  • User must have a connected wallet
  • User must authenticate via SIWE
  • Facilitator wallet must be generated
  • SilentSwap client must be initialized

Key Concepts

Facilitator Groups

Facilitator groups are HD wallets derived from user entropy. They enable:

  • Private transaction routing
  • Multi-account management
  • Secure key derivation

Authorization Instructions

Authorization instructions define what the user is authorizing:

  • EIP-3009 deposits
  • Token approvals
  • Other authorization types

Delivery Methods

  • SNIP - Standard delivery method
  • Other methods as supported by the protocol

Next Steps