I don't care, a letter of such takes minutes, if you know what country they are registered in and who the regulating body. Unfortunately these "privacy" services (money laundering services) are non compliant and operate as rogue traders essentially.

I came across this thread and couldn't resist to pipe in, I just find it so amusing.
A criminal launders money through a rogue service and gets scammed. Its like robbing drug dealers, what are they going to do? Unless they know who it was? NOTHING

The law wont be on his side here unfortunately, unless he can provide documentation as to the source of 13BTC, as well as who owns the site and stole his 13BTC.
If he cannot, then he will be reporting himself as well for money laundering.

I love how Crypto is becoming more compliant, and regulating bodies are more accepting.

This situation just reminds me even more why we need to do things properly and lawfully.