A U.S. appeals court heard Roman Sterlingov’s appeal in the Bitcoin Fog case after he received a 12.5-year sentence for a laundering conspiracy tied to the service. The case involves allegations that Bitcoin Fog laundered 1.2 million BTC over a 10-year period and centers on whether U.S. money transmission laws apply to internet-based crypto mixing services and how operator involvement should be assessed. The appeal also continues to examine Sterlingov’s 2024 conviction for money laundering conspiracy and operating an unlicensed money-transmitting business, alongside broader questions about the scope of Section 1960 in crypto-related prosecutions.