Even if money (BTC, etc.) is stolen at gunpoint? Blacklisting stolen money is a marvelous idea.
Oh GTFO you UnSavoryGarnish.
"I know it looks like I sent money into that exchange, but I was actually held at gun point so please reverse it!"
Let's start using social security numbers as our addresses while we're at it. So stupid.
If a thief is caught and still has the money then should they be forced to give it back? If the thief gave it to their brother who still has it then should the brother be forced to give it back? If the thief "bought" lunch from their brother-in-law who happens to own a restaurant then should the brother-in-law be forced to give it back? When is the stolen money no longer rightfully the original owner's?