okay. soo. 1.) hansa has a unique multisig wallet for each transaction right? If that's the case, do coins received from hansa sales need to be tumbled/cleaned? if they never came in/out of a site's hot wallet, doesn't that make it very difficult to know they were used in dnm sales?
2.) can LE/analytics companies tell thta coins coming out of GRAMS' tumbler...came from grams's tumbler? OR?
A bitcoin tumbler in my opinion is unnecessary. As long as coins are sent from a bitcoin bank > clearnet wallet > darknet wallet > dnm you should be fine. Investigating the transit of coins by LE if anything went bad will be the last thing they will do. If you want to optimize OPSEC then do so but i cannot give any advice on that.