A group of Tornado Cash users has filed an appeal in federal court after the United States Treasury Department sanctioned the cryptocurrency mixer. In their appeal, the users' lawyers argued that the Treasury had exceeded its authority in sanctioning Tornado Cash transactions. The appeal claimed that the actions of the Treasury were contrary to law and exceeded its statutory authority. The plaintiffs argued that the smart contracts used by Tornado Cash were "immutable and ownerless" and did not meet the Treasury's definition of "property" subject to sanctions. The filing is the latest development in a lawsuit first filed in September 2022. Coinbase's chief legal officer, Paul Grewal, voiced his support for the plaintiffs in a Twitter thread. The advocacy group Coin Center, which also sued the Treasury over Tornado Cash, lost their case in October 2022 and has filed an appeal. The US authorities have also pursued criminal charges against individuals involved with Tornado Cash. Read more AI-generated news on: https://app.chaingpt.org/news