unionlabs/union
Union
Union is an interoperability messaging protocol and trust-minimized asset bridge designed to transport data and instructions across diverse blockchain ecosystems. It provides a zero-knowledge cross-chain bridge and a state verifier that uses zero-knowledge provers and light clients to validate blockchain state transitions without relying on trusted intermediaries.
The project features a WebAssembly blockchain runtime that hosts virtualized smart contracts and stacks for extensible network functionality. It employs a modular relayer architecture and a decentralized mechanism for moving assets and messages between networks while maintaining security and censorship resistance.
The system covers a broad range of capabilities including zero-knowledge proof generation for block and state transitions, multi-party computation coordination, and light client protocol implementation. It also includes infrastructure tools for declarative network provisioning via NixOS, local network simulation, and blockchain node lifecycle management.
Features
- Cross-Chain Bridges - Transfers assets and messages between networks using zero-knowledge protocols to maintain security and censorship resistance.
- Consensus Engines - Provides core consensus engines to manage state replication and network agreement via Proof of Authority or Proof of Stake.
- Light Client Synchronization - Tracks external chain headers and validator sets to enable trust-minimized verification of remote network states.
- Blockchain Nodes - Provides the infrastructure for running full nodes and validator sets to maintain blockchain consensus.
- Message Relayers - Transports data between diverse network ecosystems using a modular relayer for high-performance delivery.
- Cross-Chain State Synchronization - Establishes secure communication channels to maintain state synchronization between disparate blockchain networks.
- Transaction Relayers - Transports data packets and assets between networks using a decoupled system of transactional queues and state machines.
- State-Machine Relayers - Implements a state-machine-driven relayer architecture for high-performance, parallel cross-chain data transport.
- Transactional Queue Relayers - Provides a transactional queue system for relayers to ensure reliable data delivery and crash recovery.
- Blockchain - Provides a WebAssembly-based blockchain runtime to host virtualized smart contracts and protocol stacks.
- Smart Contract - Executes virtualized smart contracts and blockchain stacks using a WebAssembly virtual machine.
- Trust-Minimized Asset Bridges - Implements a decentralized mechanism for moving digital assets between networks with high security and censorship resistance.
- Trust-Minimized Consensus Management - Generates cryptographic proofs and manages validator signatures to secure state transitions across environments.
- Block Transition Proofs - Produces zero-knowledge proofs that verify block transitions and the authenticity of validator sets.
- Proof Verification Interfaces - Exposes a high-performance gRPC interface for checking the validity of zero-knowledge proofs against network state transitions.
- Zero-Knowledge Proof Orchestration - Provides a gRPC endpoint for the orchestration and verification of zero-knowledge proofs to authenticate state transitions.
- Consensus Proofs - Generates zero-knowledge proofs for block headers to facilitate trust-minimized light client verification.
- Zero-Knowledge Bridge Orchestration - Transfers assets and messages between blockchains using zero-knowledge proofs to ensure a trust-minimized bridge.
- State Transition Verification - Validates the state and block headers of external blockchains using zero-knowledge proofs without trusted intermediaries.
- Block Header Validations - Validates the authenticity of non-adjacent block headers by checking voting power thresholds and aggregated signatures.
- Historical State Verification - Provides network state verification using light clients and zero-knowledge provers to validate diverse blockchain states.
- State Transition Verifiers - Uses zero-knowledge provers and light clients to validate the authenticity of blockchain state transitions.
- State Transition Proofs - Processes transactions and generates proofs to verify cross-chain state transitions for relayers.
- WebAssembly Contract Runtimes - Runs virtualized smart contracts and protocol logic within a portable WebAssembly bytecode environment.
- Blockchain Node Lifecycle Management - Automates the lifecycle and upgrade process of blockchain node deployments to ensure consistent availability.
- Chain History Bootstrapping - Syncs networks from the genesis block using bundled binary packages to verify full transaction history.
- Declarative Provisioning Engines - Utilizes declarative provisioning engines to automate the lifecycle of blockchain nodes and network services.
- Blockchain Node Provisioning - Provides reproducible deployments of blockchain nodes and network services using NixOS modules and container configurations.
- Infrastructure Configuration - Defines node infrastructure and service settings as reproducible code using NixOS modules.
- Zero-Knowledge Gossip Modules - Implements zero-knowledge gossip modules to maintain secure and trust-minimized state synchronization across chains.
- Cross-Chain Communication Protocols - Defines canonical channels and specifies gas fees and timeout durations for sending packets between networks.
- Interoperability Protocol Deployment - Configures and installs messaging protocols and light clients to enable secure cross-chain communication.
- Cross-Chain Deployment Registries - Maintains a registry of contract addresses and application handlers to ensure consistent routing across networks.
- MPC Coordination State Machines - Coordinates multi-party computation participants through a structured sequence of contributions to generate cryptographic reference strings.
- Multi-Party Computation Coordination - Coordinates participants to collectively generate cryptographic reference strings via a state-machine-driven process.
- Rollup Finality Verifications - Validates rollup contracts against roots and settlement conditions to ensure secure state synchronization between layers.
- Rollup State Verifications - Validates account roots and state against rollup contracts to secure Layer 2 cross-chain communication.
- Local Network Simulators - Creates local end-to-end network environments to test bridging functionality before production deployment.
Star history
How this analysis was created: This summary and feature list were written by an AI model that read the project's README and public documentation pages. Each feature links to the documentation it came from; stars, license and language come straight from the GitHub API. The model does not read the source code, and the analysis is refreshed when the project is re-analysed. Learn more on our About page.
