In a developing story, HashFlare duo Sergei Potapenko and Ivan Turõgin are sentenced to time served for one of the largest cryptocurrency fraud cases in U.S. history.  The HashFlare duo previously pleaded guilty to their crime of the massive $577 million Ponzi scheme.  However, Federal Judge Robert Lasnik handed down the ruling, allowing the Estonian nationals to avoid additional prison time. They had served 16 months in custody by this time. For context, the HashFlare duo, Sergei and Turõgin were arrested in Estonia in November 2022 and extradited to the United States in May 2024.  The duo pleaded guilty to…