Sergei Potapenko and Ivan Turõgin, co-founders of HashFlare, received time served—16 months in custody—for running a $577 million crypto Ponzi scheme from 2015 to 2019. U.S. District Judge Robert Lasnik also imposed $25,000 fines, 360 hours of community service, and forfeiture of over $450 million in assets for victim restitution. The scheme lured investors with fake cloud-mining contracts and misused funds for luxury assets. The U.S. Department of Justice had sought 10-year sentences and is considering an appeal, citing the fraud’s scale and harm caused. Authorities stressed the importance of vigilance in crypto investments to avoid similar large-scale scams.