The Federal Bureau of Investigation could end up owning up to 5 percent of all bitcoins in circulation following its crackdown on the illegal drug market Silk Road. This speculative number is based on an assertion of an FBI spokesperson, who guessed that the Silk Road founder’s personal bitcoin wallet could contain up to $80 million in bitcoins. That would require that founder Ross Ulbricht had kept essentially all of the revenue he earned from Silk Road in bitcoin, which is highly unlikely.
Still, there's a stash there, and the FBI’s plan for it? "We will probably just liquidate them,” an FBI spokesperson told Kashmir Hill of Forbes.
That means markets that trade the alternative currency should brace for a fire sale.
Most of the bitcoins seized by the FBI are encrypted, so the agency won’t know exactly how many they have until whoever is responsible for cracking encryption on seized assets has had a go at them. (Perhaps they’ll enlist the NSA?)
Hill estimates the FBI could ultimately have seized 600,000 bitcoins.