How did they manage to get access to letters of guarantee? Weren't they supposed to be deleted 24 hours after transaction got confirmed?
The investigation started last year, I'm guessing like with some darknet markets, the Dutch police decided they'll run the service themselves for a while to glean some information from people using the service. Or they managed to locate bestmixer's servers and install a backdoor.
Interesting... So I got PM from the Dutch Police.

Nah, the owner account wouldn't be in the forum to post during all the months, and to defend his trust feedback They took access to the site no more than 1 month before. And to be honest, I have a little conviction to say he is still here...running a mixer....