Union is a modular interoperability protocol designed to facilitate the exchange of assets and messages between various blockchains and decentralized applications (dApps). It leverages zero-knowledge (ZK) cryptography and consensus verification to enable secure, decentralized, and cost-efficient cross-chain communication without relying on trusted third parties, oracles, multi-signatures, or multi-party computation (MPC).
Union’s mission is to unify the modular multi-chain landscape by providing a sovereign interoperability layer accessible to all Layer 1 blockchains, appchains, rollups, and future blockchain innovations. By enabling permissionless composability across ecosystem borders, Union aims to foster a world of fast, application-specific blockchains and rollups, eliminating the need for centralized entities, multi-signatures, and reducing the risk of bridge hacks.
Union: Revolutionizing Blockchain Communication via Modular Interoperability
1. What is Union?
Union is a decentralized interoperability protocol designed to enable seamless communication between blockchains. Unlike traditional bridges, Union adopts a modular architecture that combines:
Secure off-chain computation (via TSS networks)
On-chain verification
Decentralized governance
2. Core Innovations Modular Stack:
Separates components (messaging, verification, execution) for flexibility
Developers can plug in custom solutions (e.g., prefer ZKPs for some chains, TSS for others)
Decentralized Network:
Node operators (called “Signers”) run threshold signature schemes (TSS) to validate cross-chain messages
Eliminates single points of failure
Universal Adapter Framework:
Supports any VM (EVM, CosmWasm, MoveVM, etc.)
Dynamic gas fee abstraction across chains
3. Solving Key Interoperability Problems
Issue
Traditional Bridges
Union’s Solution
Security
Centralized validators
Decentralized TSS network
Flexibility
Hardcoded connections
Modular adapters
Cost
Chain-specific gas handling
Unified gas economics
Scalability
Limited to pre-supported chains
Any chain via SDK
4. Real-World Impact
DeFi: Atomic swaps between Ethereum & Cosmos without wrapped assets
Gaming: NFT teleportation with state preservation
Institutional: Cross-chain settlements with regulatory compliance layers
5. Technical Edge
Union VM: Processes cross-chain logic in isolated environments
Fault proofs: Slashable security for malicious actors
6. Current Traction
Live testnet with 20+ connected chains
Backed by Pantera, Coinbase Ventures
Used by dApps like SushiSwap for cross-chain liquidity routing
Why It Matters:
Union isn’t just another bridge—it’s TCP/IP for blockchains, creating a standardized language for decentralized systems to interact trustlessly.
For builders: Their SDK lets you add cross-chain functions in <50 LOC. Test it at Union Builder Dashboard.
“The future is multi-chain, not cross-chain – and Union’s modular design is how we get there.”
Modular Stack: