Interesting. Could you explain a bit more? I understand ring signature makes guessing the origin a 1/16 chance. But with stealth addresses and RingCTs you can’t know where it was sent or the amount that was sent. Lets say XMR gets transferred from A to B to C to D. Even without ring signatures, how could you derive that A’s XMR ended up at D? All we know is that A,B and C sent XMR but not knowing the amounts or where it was sent, there is no knowable or guessable relation between those transactions right?

And even you aggregate lets say 10 inputs marked by an exchange, wouldn’t churning that new single input a few times make it hard to link transactions from the newly churned input to the 10 original ones from the exchange?

FCMP that’s the proposed change that increases the ring signature size effectively from 16 to 100k right? Is that update already in the making and expected ready for release in the near future?

Right thanks. I buy small amounts of XMR whenever I have to spare and have lots of inputs. What exactly is visible when aggregating those if different sub addresses were used for all? Is it smart churn all inputs individually one time first before aggregating?

All transactions have at least two, so transactions with change will have 3. or A second bogus output is added only if needed to shield 1 output transactions from standing out. ?