To make a long story short: the coins can be traced. But bear in mind that in order for that to even matter, their ultimate destination has to first be directly proven to be "of interest." I mean the guy you give the coins to for drugs is going to cash out at some point, and how he does that is neither here nor there (infact I don't even know what the usual way is, frankly). But the coins will keep on circulating or just sit around in some speculator's wallet while the price goes up.Either way, it's unlikely that as a buyer you need to worry about this. But your answer is that yes, your name and bank account are pretty much forever traceable.