let's imagine that I have tainted coins. Will it be possible to later have troubles because I used them? Since all bitcoin transaction history can be tracked, can it at some point be led to me?
Its easy to tell where the coins went in its whole life, the thing is, its very hard to prove that through all the loops, you were the one that was used for a X transaction that was proven to be a crime.
Its pretty much the same as real cash.
Your cash could have some cocaine residue on it, does it mean you were the one that did cocaine? No.
Ok. Now I understant. It works pretty much like cash... most notes was already used to pay for dubious services or illegal items, but that doesn't mean that you were the one doing it.
