A single mystery bidder has secured the entire Bitcoin stash seized by US authorities from Silk Road during the arrest the drug market's alleged founder Ross Ulbricht.
News of the auction's outcome came on Monday after a US Marshals Service spokesperson confirmed to Coindesk it completed the transaction to "one winning bidder".
The auction attracted 45 bidders, which submitted 63 bids during the 12 hour auction on 27 June. The transaction has since turned up on the Blockchain Bitcoin register.
The Bitcoin booty that went under the hammer last Friday was auctioned off in 10 blocks, with nine valued at 3,000 Bitcoin and one remaining block of 2,656.51 Bitcoin — a total of 29,656.51 Bitcoin.
While the identity of the winning bidder isn't known, an error by the Marshals Service resulted in the leak of a list of people who were interested in participating in the auction.
One person who did make his bids public was Barry Silber, CEO of Bitcoin investment vehicles SeconMarker and Bitcoin Investment Trust. Silber rallied together a syndicate which included 42 bidders, who lodged 186 bids for a total of 48,013 Bitcoin.
The Marshals Service required bidders to make a $200,000 deposit to participate in the auction and said it wanted to exclude anyone acting on behalf of Silk Road or Ross Ulbricht.
The Bitcoin that was auctioned were those seized from Silk Road's servers and not the currency seized from Ulbricht's hardware. Ulbricht has filed a claim for 144,000 Bitcoins — today worth around $92m — that was also seized from his hardware during the arrest.
Bitcoin's US dollar exchange rate continued to climb over the past week, according to Coindesk's charts, from $600 on the day of the auction to $635 on Tuesday.