Handled 350,000 Bitcoins! Mixer Helix's over $400 million in assets were seized by the U.S. Department of Justice

The United States has seized over $400 million in assets related to the Helix mixer case, marking the end of a money laundering conviction. The legality of mixing tools, developer responsibilities, and privacy boundaries have once again sparked regulatory disagreements in Washington.

The U.S. Department of Justice (DOJ) has officially completed a large-scale cryptocurrency seizure operation targeting Helix, a mixing service that played a key role in laundering on the dark web. The U.S. government has lawfully obtained final ownership of assets exceeding $400 million.

The DOJ issued a statement on Thursday indicating that a final forfeiture order was issued last week, confirming that the government can legally receive and dispose of previously seized cryptocurrencies, real estate, and financial account assets, all closely related to Helix’s operations and money laundering activities.

Investigations show that between 2014 and 2017, Helix handled at least 354,468 Bitcoins. The platform’s main users were individuals attempting to obscure the origins of illegal funds, including transactions from dark web black markets.

The so-called “cryptocurrency mixers” or “mixing services” refer to tools that obscure the flow of funds by blending multiple cryptocurrency transactions. They are often used to enhance privacy but have also become hotbeds for money laundering and illegal fund transfers.

Helix’s mastermind, Larry Dean Harmon, admitted to conspiracy to commit money laundering in August 2021. After years of litigation, he was sentenced to 3 years in prison in November 2024 and will remain under supervised release after serving his sentence.

With the Helix case settled, the legal positioning and regulatory boundaries of mixing tools have once again become focal points in Washington policy debates.

In December last year, President Donald Trump publicly stated that he was evaluating whether to pardon Keonne Rodriguez, co-founder of Samourai Wallet, who was convicted of money laundering and operating an unlicensed money transfer business, and was sentenced to 5 years in prison last November.

Meanwhile, the judicial case against Roman Storm, the developer of Tornado Cash, has also attracted significant attention. He was convicted last year for involvement in money laundering and violating sanctions regulations and is currently awaiting sentencing, which could carry a maximum sentence of 5 years.

Ethereum co-founder Vitalik Buterin recently publicly supported Roman Storm, stating that privacy tools like Tornado Cash are essential defenses against data exploitation and should not be criminalized solely because of their privacy features.

• This article is reprinted with permission from: 《BlockCast》
• Original title: 《Handling 350,000 Bitcoins in 3 Years! US DOJ Seizes Over $400 Million in Cryptocurrency from Mixer Helix》
• Original author: Block Sister MEL