Looks like this is part of a FinCEN violations investigation, which probably means the feds don't care about your drug purchases of a couple hundred bucks. =================== http://arstechnica.com/tech-policy/2013/05/feds-reveal-the-search-warrant-that-seized-mt-gox-account/ Feds reveal the search warrant used to seize Mt. Gox account The Department of Homeland Security is investigating Mt. Gox, the largest Bitcoin exchange, for violating laws on US money exchange and money transfersand it's grabbing the exchange's money in the process. DHS officials refused to comment on the ongoing investigation, but they did provide a copy of the warrant that was used yesterday to seize funds that Mt. Gox had in Dwolla, a money transfer service. Dwolla is a Des Moines, Iowa company that provides one of the most popular ways to move US dollars to Mt. Gox, where they can be used to buy bitcoins. In the warrant, a special agent with Homeland Security Investigations (HSI), states that there's probable cause to believe Mt. Gox is engaging in "money transmitting" without a license, a crime punishable by a fine or up to five years in prison. The warrant goes on to demand that Dwolla hand over the keys to account number 812-649-1010, which is owned by Mt. Gox subsidiary Mutum Sigillum LLC. The funds in that account "are those of Mt. Gox customers that withdraw said funds from Mt. Gox and direct their transfer to Dwolla." Homeland Security used a confidential informant, based in Maryland, to conduct the investigation. The informant simply created accounts with Dwolla and Mt. Gox, bought bitcoins, and then changed them back into dollars. Tracing that money, HSI was able to see that the money passed through a Wells Fargo account, number 7657841313, which was created by a single authorized signer: Mark Karpeles, the president and CEO of Mt. Gox. The Dwolla account shows transfers to Dwolla going back to at least December 2011, according to the warrant. The special agent then explains what appears to be the smoking gun: Karpeles specifically denied he was going to get into the currency exchange business. The warrant reads: The agent then gives a brief description of how Mt. Gox deals in the "crypto-currency" of Bitcoin: We've reached out to Mark Karpeles and will update the story if we hear back.