Union is the leading zk interoperability L1, functioning as a settlement and liquidity layer for protocols and asset issuers. There are no dependencies on trusted third parties, oracles, multi-signatures, or MPC, unlike other interoperability protocols. Union’s hyper-efficient ZK interop layer enables seamless asset issuance and scaling across thousands of chains without sacrificing security, efficiency, decentralization or speed. This makes the Union network a first in its category, whilst aiming for sub-second settlement across chains - the end game for a crosschain future.