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This refers to the shut down Samourai Whirlpool. But the coordinators listed on https://liquisabi.com/ use the WabiSabi protocol used by Wasabi Wallet which does not share the users xpub.
Yes. It was my mistake.
However, the BlocSci tool has a collection of known WabiSabi flaws when it comes to chain analysis. Albeit I am personally do not consider it as flawed protocol unlikely to JoinMarket for which my own analysis indicates that Fidelity bonds are ineffective and there is high likability that the orderbook is full of Sybills.
the BlocSci tool has a collection of known WabiSabi flaws
there was a recent fork https://github.com/crocs-muni/blocksci
Yes they did a good job about updating it. Oxt.me was a great too, hopefully someone will make something similar but using BlockSci.
A set of CJ-related heuristics implementations is here.
That's just the heuristics of detecting whether a tx is a wasabi2 coinjoin. There's also a isLongDormantInRemixes above that that attempts to identify based on the time between remixes whether the cj is initiated from trezor suite.
There are some deeper heuristics defined here which are about as far as you'd get. But are these weaknesses in the wasabi protocol? Or are they patterns that can be broken by behavior?
It is not 100% clear if FEDs could access collected XPUBs of Samourai Wallet users, but it was mentioned on the hearings and developers reported about 20% of users that were using Whirpool coordinators.
https://www.therage.co/samourai-wallet-maximum-sentence/