> It's impossible to cash out a tainted bitcoin since it cannot be deposited at exchanges. Its value is essentially zero. Given the limitless number of cryptoc

> It's impossible to cash out a tainted bitcoin since it cannot be deposited at exchanges. Its value is essentially zero. Given the limitless number of cryptocurrencies coupled with the limitless number of exchanges, there will always be some series of hops that someone can make between cryptos such that by the end, there is no amount of algorithmic analysis your exchange can perform that will automatically connect the coins and block them. Manual intervention would be required, by a privileged law enforcement expert who is personally tracking that value across novel and disparate networks using domain-specific knowledge.