Liquid SDK
Liquid SDK Sidechain Masterclass 05 / 08

Yse

Core Developer at Breez • Breez SDK Liquid Architect • Multi-Platform SDK Engineer

Biography

Yse (GitHub: hydra-yse) is a core developer at Breez, one of the most innovative companies in the Lightning ecosystem. At Breez, Yse is the primary architect of the Breez SDK Liquid implementation, which provides developers with a simple API to integrate Lightning and Liquid payments into any application.

Yse authored the very first pull request (#2) for the breez-sdk-liquid repository, setting the foundational architecture for the entire project. Since then, they have accumulated over 106 contributions to the SDK, making them one of the most active contributors to the project.

Their engineering work focuses on the challenge of building cross-platform SDKs that work seamlessly across mobile (iOS/Android), desktop, and web environments. The Breez SDK uses Rust as its core with bindings generated for multiple platforms, a pattern that Yse has been instrumental in implementing.

Yse has also contributed teaching materials for the Lugano-2025 developer program, showing their commitment to educating the next generation of Bitcoin developers on Liquid and SDK development.

Technical Contributions

Yse's contributions are deeply technical and infrastructure-focused:

  • Breez SDK Liquid: Primary architect of the Liquid integration in the Breez SDK. Authored PR #2 that established the core architecture. 106+ contributions covering the entire stack.
  • Real-Time Sync System: Designed the synchronization system that keeps wallet state consistent across devices, a critical challenge in mobile SDK development.
  • NWC Plugin: Built the Nostr Wallet Connect plugin for the Breez SDK, enabling interoperability with the Nostr ecosystem.
  • Multi-Platform Bindings: Implemented the SDK binding layer that generates native APIs for Kotlin (Android), Swift (iOS), React Native, and Flutter from the Rust core.
  • Liquid Network Integration: Deep work on Liquid Network transaction handling, confidential transaction support, and swap mechanics within the SDK.

Masterclass: Liquid SDK

This masterclass covers the Liquid sidechain and how to build applications on it using the Breez SDK. The Liquid Network is a federated sidechain of Bitcoin that offers faster settlement, confidential transactions, and asset issuance capabilities.

Building with the Liquid SDK
Sidechain • Mar 10, 2026

Topics likely covered include:

  • Liquid Network fundamentals: federation model, L-BTC, confidential transactions
  • Breez SDK architecture: Rust core with multi-platform bindings
  • Integrating Liquid payments into mobile and web applications
  • Swap mechanics: moving between Lightning and Liquid
  • Building cross-platform SDKs with Rust + FFI bindings
  • Real-world use cases: point-of-sale, wallets, and commerce

Resources & Preparation

Breez SDK Liquid
The Liquid implementation of the Breez SDK that Yse architects.
Breez SDK Liquid Docs
Developer documentation for integrating the Liquid SDK.
Breez SDK (Greenlight)
The original Breez SDK with Greenlight Lightning backend.
Liquid Network
Official Liquid Network site with technical overview and ecosystem info.
Breez Technology
Breez company site with Lightning and Liquid product information.
Liquid Developer Docs
Technical documentation for the Liquid Network and Elements platform.
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