What is Union (U)?

Deep Dive

1. Purpose & Technology

Union aims to connect every blockchain by solving the critical problem of interoperability. Unlike bridges that rely on insecure multisigs or oracles, Union uses a combination of zero-knowledge (ZK) cryptography and consensus verification. This means it mathematically proves the validity of state changes from one chain to another by verifying the full validator set of connected chains, creating what it calls "true trustless bridging" (Union). Its architecture supports multiple execution environments (EVM, MoveVM, SVM) and is designed for sub-second finality.

2. Token Utility & Economics

The U token is central to the network's operations and economics, with three primary functions (Union Foundation).

• Gas & Fee Market: U is used to pay for critical actions like verifying ZK-proofs and relaying messages, creating a dynamic fee market.
• Network Security: Validators and delegators stake U in a Proof-of-Stake model to secure the Union L1 and earn emissions.
• Cross-chain Governance: U holders will eventually govern the network directly from connected chains like Ethereum.

Its genesis supply is capped at 10 billion tokens, with an initial annual inflation of 6% that decreases yearly to a long-term rate of 2%. Nearly 60% of the supply is directed toward community, ecosystem, and DAO governance to align incentives.

3. Key Differentiators

Union distinguishes itself through its security-first approach. By leveraging ZK-proofs and verifying source-chain consensus, it eliminates the private-key vulnerabilities that have plagued other cross-chain bridges. CEO Karel Kubat described it as a "decentralized, quantum-secure" protocol akin to a modern SWIFT for blockchains (KuCoin). This focus on being a foundational settlement and liquidity layer for institutions and developers, rather than a consumer-facing app, is a core part of its value proposition.

Conclusion

Fundamentally, Union is a security-focused interoperability engine that uses advanced cryptography to enable a seamlessly connected multi-chain future. Will its technical rigor be the key to achieving widespread institutional and developer adoption?