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HashFlare Founders Seek Time Served as U.S. Prosecutors Demand 10-Year Sentences

By ToTo BugelmanNewcomer0 rep· 8/7/2025

Sergei Potapenko and Ivan Turõgin, the co-founders of the now-defunct cryptocurrency mining platform HashFlare, are seeking to avoid any additional prison time beyond the 16 months they have already served in pre-trial detention. The duo pleaded guilty to conspiracy to commit wire fraud in May 2024, admitting to orchestrating what prosecutors describe as a $577 million Ponzi scheme between 2015 and 2019. U.S. prosecutors, however, are pushing for a decade-long sentence for each founder, labeling the case the largest fraud the court has ever tried.

 

Key Takeaways

  • HashFlare founders Sergei Potapenko and Ivan Turõgin pleaded guilty to conspiracy to commit wire fraud.

  • Prosecutors are seeking 10-year prison sentences for each founder, citing a $577 million Ponzi scheme and $300 million in victim losses.

  • The defense argues for credit for the 16 months already served in custody and claims victims will be made whole.

  • The case highlights the increasing scrutiny of cryptocurrency businesses and the challenges of cross-border fraud enforcement.

  • The sentencing hearing is scheduled for August 14, with the outcome potentially setting a precedent for similar cases.

 

Founders Argue for Time Served

Potapenko and Turõgin's defense team has submitted a sentencing memo to U.S. District Court Judge Robert Lasnik, arguing that their 16 months in Estonian custody prior to extradition to the U.S. should suffice. They highlight their cooperation with investigators and the fact that HashFlare customers have withdrawn over $2.3 billion in cryptocurrency, significantly more than the $487 million initially invested in mining contracts. The defense also claims that all victims will be fully repaid through the forfeiture of over $400 million in assets as part of their plea agreement.

 

Prosecutors Seek Decade-Long Sentences

Conversely, U.S. prosecutors are advocating for a 10-year prison sentence for each defendant. They contend that the scheme caused approximately $300 million in victim losses and was fueled by the founders' "lavish lifestyles." Prosecutors argue that the scale of the fraud, which involved over 440,000 customers and operated as a classic Ponzi scheme, necessitates a severe sentence to deter future misconduct in the burgeoning crypto sector. They also emphasize that a significant portion of the victims were U.S. residents, justifying the case's jurisdiction in the United States.

 

Legal and Deportation Complexities

The case has also brought to light legal ambiguities regarding jurisdiction over foreign nationals in transnational crypto fraud cases. Potapenko and Turõgin have expressed a desire for deportation to their native Estonia, despite a court order keeping them in the U.S. for sentencing. A reported directive from the Department of Homeland Security suggesting immediate deportation has added further uncertainty to their legal status and future.

 

Broader Implications for Crypto Regulation

The HashFlare case is emblematic of the growing regulatory and prosecutorial attention on cryptocurrency-related activities in the U.S. The outcome of the sentencing hearing on August 14 is expected to have significant implications for how U.S. courts handle similar cross-border crypto fraud cases, potentially shaping the future of enforcement in the digital asset space.

 

Sources

 

This article was created with support from AI-driven technology, drawing on multiple reputable sources. The final content has been thoroughly reviewed and edited by BlockzHub's editorial team to ensure accuracy, clarity, and coherence. Original reporting sources are credited whenever appropriate and as required. The opinions expressed in this article do not necessarily represent the official views or positions of BlockzHub. This article is intended for informational purposes only and should not be considered financial or professional advice. Investing involves risk, and you should consult a qualified financial advisor before making any investment decisions.

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HashFlare Founders Seek Time Served as U.S. Prosecutors Demand 10-Year Sentences | BlockzHub