that after a certain amount of time the bitcoin becomes practically anonymous? As in, not being able to be traced back to the original KYC exchange, or in the case of "tainted" bitcoin, that?
No matter how many times you send bitcoins or any other coin from place to another place it most be traceable, unless that the person or team who is tracing the transaction is not ready to trace the coin from one place to another place, another aspect I may think that a coin get their position it will be difficult to trace the coin is when you send the coin to mixer. I don't know if I'm correct, please if it's wrong I will like to need more explanation