New non KYC exchange on the map now: https://xmr2cex.com/ what's fascinating here is it offers clean UTXOs that pass sanctions and AML checks for a higher price of 5-6% per swap. Usually swap services...
Blockchain Tx history is just one factor in passing AML/KYC checks so even the purest of coins may not be sufficient for how some people will try and use them.
Additionally the risk rating of a tx based on its history is not static - one could imagine two people getting BTC from a common (ancestor) UTXO, and the way one person spends theirs could negatively effect the new scoring of the other person. Ultimately everybody's coins from this swap service could end up with bad KYC ratings after a few months in the worse case
Also if someone is willing to pay such a premium for untainted coins then the service should randomly delay the exchange (or allow the option for it) around a few hours to days not a constant ~30mins/10blocks since this leaks a lot of data that can (will) be correlated
Additionally the risk rating of a tx based on its history is not static - one could imagine two people getting BTC from a common (ancestor) UTXO, and the way one person spends theirs could negatively effect the new scoring of the other person. Ultimately everybody's coins from this swap service could end up with bad KYC ratings after a few months in the worse case
Also if someone is willing to pay such a premium for untainted coins then the service should randomly delay the exchange (or allow the option for it) around a few hours to days not a constant ~30mins/10blocks since this leaks a lot of data that can (will) be correlated