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An Ohio man named Larry Dean Harmon will serve three years in prison and forfeit more than $400 million worth of cryptocurrency and other assets, the Department of Justice announced on Friday<\/a>. Harmon was indicted in 2020<\/a> on money laundering conspiracy charges related to Helix, a darkweb cryptocurrency \u201cmixer\u201d service he ran.<\/p>\n<\/div>\n Also known as crypto \u201ctumbling,\u201d services like Helix are designed to hide cryptocurrency transactions \u2014 often for illegal drugs \u2014 and the identity of people involved. From 2014 to 2017, Harmon processed more than 350,000 Bitcoin (about $311 million USD at the time) in such transactions, according to the DOJ\u2019s announcement. <\/p>\n<\/div>\n Harmon, who pleaded guilty to conspiracy to commit money laundering in August 2021, will be on the hook for three years of supervised release after serving his prison sentence. He also received a $311,145,854 forfeiture money judgment.<\/p>\n<\/div>\n He faced a possible 20 years in prison, but the judge in the case gave him a more lenient sentence after he helped with multiple other investigations, as The Wall Street Journal <\/em>notes<\/a>. That reportedly included his testimony in the trial of Roman Sterlingov, who ran another crypto mixer called Bitcoin Fog. <\/p>\n<\/div>\n