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April 28, 2021 08:50 pm

Feds Arrest an Alleged $336M Bitcoin-Laundering Kingpin

An anonymous reader quotes a report from Wired: For a decade, Bitcoin Fog has offered to obscure the source and destination of its customers' cryptocurrency, making it one of the most venerable institutions in the dark web economy. Now the IRS says it has finally identified the Russian-Swedish administrator behind that long-running anonymizing system and charged him with laundering hundreds of millions of dollars worth of bitcoins, much of which was sent to or from dark web drug markets. What gave him away? The trail of his own decade-old digital transactions. US authorities on Tuesday arrested Roman Sterlingov in Los Angeles, according to court records, and charged him with laundering more than 1.2 million bitcoins -- worth $336 million at the times of the payments -- over the 10 years that he allegedly ran Bitcoin Fog. According to the IRS criminal investigations division, Sterlingov, a citizen of Russia and Sweden, allowed users to blend their transactions with those of others to prevent anyone examining the Bitcoin blockchain from tracing any individual's payments. He took commissions on those transactions of 2 to 2.5 percent. In total, the IRS calculates, Sterlingov allegedly took home roughly $8 million worth of bitcoin through the service, based on exchange rates at the times of each transaction. That's before factoring in Bitcoin's massive appreciation over the past decade. Ironically, it appears that the 2011 transactions Sterlingov allegedly used to set up Bitcoin Fog's server hosting are what put the IRS on his trail. Of the $336 million the complaint accuses Bitcoin Fog of laundering, at least $78 million passed through the service to various narcotics-selling dark web markets like the Silk Road, Agora, and AlphaBay over the years that followed. The IRS also appears to have used undercover agents in 2019 to transact with Bitcoin Fog, in one case sending messages to Bitcoin Fog's administrator that explicitly stated that they hoped to launder proceeds from selling ecstasy. Bitcoin Fog completed that user's transactions without a response. Most remarkable, however, is the IRS's account of tracking down Sterlingov using the very same sort of blockchain analysis that his own service was meant to defeat. The complaint outlines how Sterlingov allegedly paid for the server hosting of Bitcoin Fog at one point in 2011 using the now-defunct digital currency Liberty Reserve. It goes on to show the blockchain evidence that identifies Sterlingov's purchase of that Liberty Reserve currency with bitcoins: He first exchanged euros for the bitcoins on the early cryptocurrency exchange Mt. Gox, then moved those bitcoins through several subsequent addresses, and finally traded them on another currency exchange for the Liberty Reserve funds he'd use to set up Bitcoin Fog's domain. Based on tracing those financial transactions, the IRS says, it then identified Mt. Gox accounts that used Sterlingov's home address and phone number, and even a Google account that included a Russian-language document on its Google Drive offering instructions for how to obscure Bitcoin payments. That document described exactly the steps Sterlingov allegedly took to buy the Liberty Reserve funds he'd used.

Read more of this story at Slashdot.


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