Introduction

The Exchange Union Daemon (xud) is the reference node implementation powering OpenDEX, a decentralized exchange (DEX) built on top of the Lightning and Raiden network. xud brings individual traders, market makers and exchanges onto OpenDEX to form a single global trading network.

Traders use OpenDEX-enabled exchanges as gateways to trade on OpenDEX. These exchanges are usually non-custodial and abstract away from the technological complexity of the DEX and offer a superior UX by enabling trading via a simple website. Exchanges use xud to hedge user trades on OpenDEX in order to lock in profits. Market Makers use xud to arbitrage with external exchanges (e.g. Binance) and provide liquidity on OpenDEX for a premium. Exchange Union provides SDK's for both, exchanges to automate hedging with xud and for market makers to connect to external exchanges and automate the arbitrage trades.

Get Started

-> Get started as Trader, buying and selling cryptocurrency preserving your privacy & without counterparty risk

-> Get started as Market Maker, providing liquidity from external exchanges making a profit

-> Get started as Exchange Operator, using a open-source white-label exchange platform to run your own exchange (coming soon!)

-> Get started as Developer, contributing or building on top of xud

Trading via XUD

Incentives

  • Traders benefit from anonymous peer-to-peer trading without KYC and accounts.

  • Market makers make profits via arbitrage between external exchanges and OpenDEX.

  • Exchanges make profits via locking in trading fees by hedging trades on OpenDEX.

Features

  • Supports individual traders, market makers, and and exchanges.

  • Order book aggregates orders from the network locally.

  • Orders get matched locally with peer orders from the network.

  • Instant order settlement via atomic swaps on the lightning & raiden network.

  • Full control over assets.

  • One mnemonic for all assets.

  • Tor by default.

  • Integration and simplified control of lnd and raiden clients.

  • Peer-to-peer discovery of other OpenDEX nodes.

  • gRPC API to serve other applications, also accessible via the command-line interface xucli.

API & Code Documentation

The daemon has been designed to be as developer friendly as possible in order to facilitate application development on top of xud.

Support & Community

  • Support, general questions and development-related discussions are welcome on our Discord!

Help us to improve!

xud is in an early stage; just like this page. Please help us to improve by opening issues (or even better PRs) for xud, xud-docker and the docs.

Feel like talking? Chat with us on Discord!