KuCoin Lists Union (U), a ZK Chain for Cross-Chain Settlement and Liquidity

• KuCoin lists Union (U) with the U/USDT pair on September 4, 2025.
• Union uses zero-knowledge cryptography to enable cross-chain settlement and liquidity.
• Deposits are live via Ethereum ERC-20, with withdrawals opening on September 5.

Global crypto exchange KuCoin has announced the listing of Union (U), a zero-knowledge interoperability blockchain built for cross-chain settlement and liquidity. 

The listing introduces a high-tech infrastructure project to KuCoin’s massive user base, with deposits on the Ethereum ERC-20 network already open.

KuCoin Trading Schedule and Other Details 

According to the announcement, the U/USDT trading pair launched today, September 4, 2025, at 09:00 UTC. This gives users direct access to a network designed to unify fragmented blockchain ecosystems. 

Ahead of the full trading, a call auction for Union will run from 08:00 to 09:00 UTC, followed by the official launch of spot trading. Notably, Kucoin advised users to ensure deposits are made only via Ethereum ERC-20, as no other chains are supported at this stage.

As part of the trading details, withdrawals for the Union token will be available from 10:00 UTC on September…

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