Phiên họp khiếu nại của người vận hành Bitcoin Fog thử thách quyền tài phán của Hoa Kỳ đối với các dịch vụ tiền điện tử xuyên biên giới

The Huoxing Finance report states that on May 13, the U.S. Court of Appeals for the District of Columbia Circuit heard oral arguments on the appeal of Roman Sterlingov’s conviction related to the bitcoin mixing service Bitcoin Fog. This case tests a core theory of the U.S. Department of Justice: that global internet-based encryption services are subject to U.S. money transmission laws if they serve U.S. users and facilitate cross-border fund transfers, even if the services primarily operate abroad. The defense attorneys argued that the U.S. government artificially created jurisdiction by deploying undercover agents to conduct minimal transactions, questioning whether this standard could subject any website to U.S. enforcement. The prosecution emphasized that Bitcoin Fog intentionally served international users, including those in the U.S., and must comply with U.S. regulations. Judges also raised significant doubts about the reliability of the FBI’s use of “IP overlap” analysis to link Sterlingov to the service, noting a lack of scientific validation. The outcome of this case will impact similar prosecutions against developers of privacy tools such as Tornado Cash and Samourai Wallet, as well as define the boundaries of U.S. cross-border enforcement against cryptocurrency services.