[cookiecaper]

With Bitcoin that problem may be somewhat short lived. The blockchain is forever. Once unmasked, your permanent, irrevocable, and cryptographically-verified transaction log is sitting in the open for all the world to analyze.

Doesn't matter how many years it's been since you've done business. Doesn't matter if you knew that the random dude you bought an antique thimble from was a political dissident or not. You still sent money to that btc address, that address owned by a terrorist, and now they're gonna wanna know why you were funding terrorism...