KuCoin is one of the world’s largest cryptocurrency exchanges.  In March of this year, the New York Attorney General (“AG”) sued KuCoin, accusing it of failing to register with the state before letting investors buy and sell cryptocurrencies on its platform.  According to the AG, an investigator from the AG’s office was able to create an account with KuCoin using a computer with a New York-based IP address to buy and sell cryptocurrencies, including popular tokens like ETH, LUNA, and UST. The Petition alleged that New York law requires securities and commodities brokers providing services in New York to register with the state, which KuCoin failed to do.  By trading cryptocurrencies that are commodities and securities with its New York users, KuCoin violated state law.  In addition, KuCoin claimed to be an exchange, but was not registered with the Securities and Exchange Commission as a national securities exchange or appropriately designated by the Commodity Futures Trading Commission, as is required under New York law.

On December 12, 2012, Ku Coin agreed to a Stipulation and consent order that settled the case.  KuCoin admitted that it operates a cryptocurrency trading platform on which users, including users in New York State, can purchase and sell cryptocurrencies which are securities or commodities as defined under the laws of New York State and that Ku Coin is not registered in New York State as a securities or commodities broker-dealer.  KuCoin also admitted that it represented itself as an “exchange” but was not registered as an exchange pursuant to the laws of New York State.

Ku Coin agreed to terminate access to its services for users in  New York  and will close the relevant accounts of New York users. KuCoin will continue to prohibit the creation of new New York accounts and will restrict access to its platform to existing New York accounts for the sole purpose of withdrawing assets.

As of November 29, 2023, New York customers held assets at KuCoin with an approximate notional value of $16,766,642 worth of fiat and/or cryptocurrencies.  Ku Coin agreed to return these current account balances held by New York customers, who can receive their refund by withdrawing their assets directly from KuCoin over the following 90 days.  Finally, KuCoin agreed to pay a disgorgement fine of $5.3 million to the Office of the AG.

One final point is worthy of note.  When the suit was commenced, the Petition alleged that Ether (ETH), the second-largest cryptocurrency by market capitalization, was a security.  The Stipulation settling the case included a statement that “KuCoin acted as an unregistered securities broker or dealer and commodities broker-dealer by offering, selling, and purchasing securities and commodities, including but not limited to the ETH, LUNA, and UST tokens . . . .”  Notably, there is some ambiguity here as to whether ETH is a security or a commodity.  At the federal level, the CFTC has taken the position that ETH is a commodity, while, as explained in this article from CryptoSlate, the SEC has noticeably refused to say that Ether is not a security (as it has done with Bitcoin).

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David Zaslowsky is partner in the Litigation Department of Baker McKenzie's New York office. He helps companies solve complex commercial disputes in arbitration and litigation, especially those involving cross-border issues and Section 1782 discovery. David has a degree in computer science and, as a result, has worked on numerous technical-related disputes, including, most recently, those involving blockchain and artificial intelligence. In April 2025, Attorney Intel named David one of the top 25 blockchain lawyers in the country. He is the editor of the Firm's blockchain blog and co-editor of the firm's International Litigation & Arbitration Newsletter. David has been included for a number of years in the Chambers USA Guide and Chambers Global Guide for his expertise in international arbitration. He also sits as an arbitrator and is on the roster of arbitrators for a number of arbitral institutions. David sits on the Board and chairs the governance committee of the New York International Arbitration Center, and is a founding member of the International Arbitration Club of New York. For over 35 years, he has written and spoken often on the subjects of arbitration and international litigation.