The indictment says:
involved the transport and transmission of funds that were known to the defendant to have been derived from a criminal offense and were intended to be used to promote and support unlawful activity
I wonder what that's about. I doubt that he was knowingly helping the Silk Road or anything like that...
I read somewhere that he wanted to sell bitcoin @ more than 10% of the market rate to an undercover agent, instead of knowing that the buyer will be using it for illegal purpose. Does anyone have any info backing up this claim ?