• n0-space/whirlpool-client — Whirlpool CoinJoin Client
  • Metadata
  • Purpose
  • Architecture
  • Key Features
  • Relevance to Kapnet

§n0-space/whirlpool-client — Whirlpool CoinJoin Client

§Metadata

• Source: https://github.com/n0-space/whirlpool-client (fork of Samourai-Wallet/whirlpool-client)
• License: AGPL-3.0 (Copyright Samourai Wallet)
• Language: Java (Maven build)
• Size: 1.2MB
• Files: 104

§Purpose

Java client library for Whirlpool CoinJoin protocol. Enables users to participate in Chaumian CoinJoin transactions for Bitcoin privacy.

§Architecture

whirlpool-client/
  src/
    main/java/
      whirlpool/client/       — Client API
      whirlpool/client/api/   — REST API client
      whirlpool/client/tx/    — Transaction construction
      whirlpool/client/wallet/— Wallet integration
      whirlpool/client/model/ — Data models
    test/java/                — Unit tests
  pom.xml                     — Maven build

§Key Features

• BIP-47 payment codes for payjoin
• UTXO management and selection
• Transaction construction for CoinJoin
• Server communication (coordinator)
• Blinded credentials for anonymity

§Relevance to Kapnet

• Treasury privacy: mix Kapnet treasury UTXOs before distribution
• Kapnet payments: CoinJoin for private payouts
• Integration: kapnet-libbitcoin → whirlpool-client for privacy ops
• License: AGPL-3.0 (must share source if modified + served)