U.S. authorities have completed the seizure of bitcoins, real estate, and cash linked to one of the darknet’s leading mixing services.
The United States government has formally taken ownership of more than $400 million in bitcoin, cash, and real estate connected to Helix, once one of the most widely used bitcoin mixing services in the darknet ecosystem.
A federal court in Washington, D.C. issued the final forfeiture order on January 21, officially transferring the assets to the state following the conviction of Larry Dean Harmon, the operator of the service. The confiscated holdings include thousands of bitcoins, hundreds of thousands of dollars in fiat currency, and an Ohio residence purchased during Helix’s peak years.
According to prosecutors, the platform was specifically designed to serve darknet illicit markets and was directly integrated into their withdrawal systems via APIs. Court documents reveal that between 2014 and 2017 Helix processed approximately 354,468 bitcoins, worth about $300 million at the time. Harmon retained a fee on each transaction as compensation for the service provided.
Conviction and confiscation of the bitcoins
In August 2021, Harmon pleaded guilty to conspiracy to commit money laundering. After years of procedural delays, he was sentenced in November 2024 to three years in prison, followed by supervised release. In addition to the prison term, the court ordered the forfeiture of the seized assets and the payment of an additional amount as restitution. Authorities highlighted that Helix operated in tandem with Grams, a darknet search engine also run by Harmon, which helped users locate illicit marketplaces.
According to Realtor.com, prosecutors seized more than $325,000 in cash and approximately 4,500 bitcoins, currently valued at around $355 million.
Reports indicate that Harmon was released from prison in December 2025 under an early-release program after completing a drug rehabilitation program. The former Helix operator has reportedly stated his intention to relaunch a legitimate Bitcoin education business and is seeking new housing following the confiscation of his residence.
