Yes, Wasabi transactions is obvious, but it's also easy to tell if you used ChipMixer, because of the common chip sizes. Correct me if I'm wrong.
not necessarily. the on-chain footprint of coinjoins is much more obvious. blockchain analysis heuristics based purely on common output sizes are unlikely to be very useful.
chipmixer touches on the chip size stuff in their FAQ.
https://chipmixer.com/faqWhy chip values are so weird? 1.024 BTC? Why not 1 BTC?
We wanted to have a lot of chip sizes and to easily split/merge them. if you start with 1 BTC and you split it, your minimal chip is 0.015625 BTC which seems even weirder.
But 1.024 BTC is so uncommon that everyone will know I've used this mixer!
After a while it will get more common, because you won't even need to use mixer to anonymize your coins. Just split them into tokens and they look exactly like chips.
I really, really want 1 BTC chip!
You are in luck! We have introduced commonize function which will swap your weird looking 1.024 BTC chip into 1 BTC chip and weird looking 0.512 BTC into 0.5 BTC.