According to the criminal complaint, Shrem himself bought drugs on Silk Road.
"Hiding behind their computers, both defendants are charged with knowingly contributing to and facilitating anonymous drug sales, earning substantial profits along the way," DEA agent James Hunt said in a release.
Shrem is a vice chairman at the Bitcoin Foundation. He is listed as a speaker at a Bitcoin conference in Miami that ended Sunday.
Shrem is believed to own a substantial amount of bitcoins.
http://www.businessinsider.com/report-c ... ted-2014-1
This should make for an interesting case. I believe one of the big selling points of Bitcoin was its anonymity. But it seems like there is an expectation by the Federal government that Bitcoin is to be treated as a bonifide currency complete with "suspicious activity" reporting requirements. One unintended outcome of this case could be the increased legitimacy of Bitcoin as an internationally recognized currency.
This case seems a little thin at first blush as well as a good example of selective prosecution. How many U.S. banks "knowingly" hold accounts for mafia front businesses? If I was the defense attorney I'd take every chance to compare Bitcoin to the U.S. dollar and other sovereign currencies.