Logs of mixing transection are kept for 7 days. He wrote the whole story why he is selling his wallets at such low price and shared proof also. BitMixer is one of the most popular Bitcoin Laundry platforms on the clearnet but currently they have shut down to provide mixing service on the surface web. It also has a very advanced dashboard which updates you on your progress, earnings and everything else. And you get paid for each view. The output can be split and sent out to as many as 5 address in total.