Quote from: albert0bsd on October 11, 2023, 11:52:19 PM

Quote from: BitcoinsGreat on October 11, 2023, 11:34:56 PM

How is that even possible?

What you just explained is correct, if someone did exactly what you said there is no problem.

I suppose that @Kruw said if you merge some mixed or coin-join transaction with another transaction that hasn't been mixed before.

Let's say that you don't have enough experience with all this topic, but you want to enter in this (i am talking of a newbie user).

Example: you have some mix of sources in your UTXOs, some of them from mixing/coin-join and some other from a KYC source like some CEX.
In that case if the user mixes some of those KYC UTXOs with some coin-joined UTXO then all the previous work becomes useless.

I remember reading somewhere before that all the "chain analysis" that some companies do is not based on any reliable document or research. It is basically something like "I believe that those Utxos belong to the same person/entity" obviously there are some cases where there is no doubt, but there are also cases where there may be doubts

People should never keep questionable UTXOs with those ones that are not problematic in one wallet.

Isolate wallets differing by ether derivation paths or any other attribute suitable for given user must be used to separate UTXOs by their types.

Fake conjoin is exclusively for consolidation purpose with preserving privacy ( Sparrow traces UTXOs and make sure that those ones that were in one of the previous transactions will never be separated between senders it mimics) .