The US Justice Department has opposed former Ethereum developer Virgil Griffith's bid to reduce his 63-month prison sentence. Griffith was sentenced in April 2022 for violating sanctions on North Korea by teaching them how to use cryptocurrency and blockchain technology to evade US and UN sanctions. Griffith's legal team requested a revision of his sentence based on new US sentencing guidelines, potentially reducing his time in prison by up to a year. The Justice Department argued that Griffith's recent conduct in prison, including petty theft, does not warrant leniency.