The U.S. government has taken full legal ownership of more than $400 million in seized cryptocurrency, cash, and real estate tied to Helix, once one of the most widely used bitcoin mixing services on the darknet.
A federal judge in Washington, D.C., entered a final order of forfeiture on Jan. 21, transferring the assets to the government following the conviction of Helix operator Larry Dean Harmon. The forfeiture includes thousands of bitcoin, hundreds of thousands of dollars in cash, and an Ohio mansion purchased during the peak of Helix’s operation.
Helix functioned as a cryptocurrency mixer, pooling and rerouting bitcoin transactions to obscure their origins and destinations.
Prosecutors say the service was built to serve darknet drug markets and was directly integrated into their withdrawal systems through an application programming interface.
Court records show Helix processed roughly 354,468 bitcoin between 2014 and 2017, worth about $300 million at the time. Investigators traced tens of millions of dollars from major darknet marketplaces through the service. Harmon took a cut of each transaction as operating fees.
Harmon pleaded guilty in August 2021 to conspiracy to commit money laundering. After years of delays, he was sentenced in November 2024 to three years in prison, followed by supervised release. He was also ordered to forfeit seized assets and pay a forfeiture money judgment.
Authorities say Helix worked alongside Grams, a darknet search engine Harmon also operated, which helped users locate illicit marketplaces. Together, the services formed part of the financial infrastructure underpinning darknet drug trade during that period.
Cash, an Ohio mansion, and millions of dollars in bitcoin
Among the forfeited assets is a 4,099-square-foot home in Akron, Ohio, purchased by Harmon and his wife in 2016 for $680,000. Automated estimates place its current value between $780,000 and $950,000, according to reporting from Realtor.com.
The property sits on a 1.21-acre lot and includes multiple fireplaces, a backyard fire pit, and a whirlpool tub. Federal officials say the home will be sold at auction by the Internal Revenue Service.
In addition to the real estate, prosecutors reportedly seized more than $325,000 in cash and approximately 4,500 bitcoin, according to Realtor.com, now valued at roughly $355 million at current prices.
“This case shows that the darknet is not a safe haven for criminal activity,” U.S. Attorney Jeanine Pirro said in a statement, adding that law enforcement will continue to pursue cyber-enabled financial crimes.
Harmon was reportedly released from prison in December 2025 through an early release program after completing drug rehabilitation.
He has said he plans to restart a legitimate bitcoin education business and is seeking new housing following the forfeiture.
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