U.S. prosecutors have formally secured ownership of more than $400 million in assets tied to the Helix cryptocurrency mixing service, closing one of the largest forfeiture actions linked to darknet-era crypto activity. The U.S. Department of Justice said a federal court issued a final order of forfeiture on Jan. 21, transferring legal title of the seized assets to the U.S. government. The assets include cryptocurrency, cash, and other property traced to Helix’s operations. According to court records, Helix functioned as a crypto “mixer” designed to obscure transaction trails. Authorities said the service was widely used to launder proceeds from illegal online marketplaces, including darknet drug markets. The forfeiture marks the final step in a years-long investigation that began with seizures and criminal charges. Officials said the order allows the government to dispose of the assets under federal forfeiture law, ending pending ownership claims tied to the case. Helix Operations and Criminal Case Prosecutors said Helix operated between 2014 and 2017, processing roughly 354,000 bitcoin during that period. At the time, the total value was estimated at about $300 million, though the assets later appreciated significantly as crypto prices rose. The DOJ identified Larry Dean Harmon as the operator of Helix. Court filings said Harmon ran the service alongside Grams, a darknet search engine, and offered technical tools that allowed marketplaces to integrate Helix directly into their payment systems. Investigators said this setup enabled users to move funds while masking their origin and destination. Authorities said Helix generated revenue by charging fees on each transaction. Investigators later traced large volumes of bitcoin from darknet markets through Helix wallets, forming the basis for money laundering charges. Court Rulings and Asset Seizure Harmon pleaded guilty in August 2021 to conspiracy to commit money laundering, according to prosecutors. In November 2024, a federal judge sentenced him to 36 months in prison, followed by supervised release, and ordered forfeiture of assets linked to the scheme. The DOJ said the newly finalized forfeiture order consolidates earlier seizures into a single judgment. As a result, the government now holds clear title to assets valued at more than $400 million. Federal officials said the case highlights the government’s ability to trace and seize crypto tied to illicit activity, even years after transactions occurred. They added that the Helix forfeiture stands among the largest crypto-related recoveries connected to darknet investigations.
