That is the seized Silkroad 1 bitcoins.
I don't believe that Silkroad 2.0 was hacked at all I believe the person/persons running it did a scam and took all escrow money as it sits in there own little nest egg until the buyer recieves there order then releases it.
There where a lot of legal (not controlled) medications on Silkroad at fairly cheap prices. Sometimes much cheaper than the prices in USA especially.
Even seen on there valium 10mg tablets x 30 $22USD including post. The genuine thing not cheap generic.