One payment should not be a key to the whole wallet, that's the part of this that is actually hard & the part most private payments pitches skip
A public chain keeps the receipt, the balance & the week before it. Banks do not hand a stranger the statement because you paid them once. The design
@Americanfort_io walked through in Seoul is the other shape: the payment can stay private to outsiders and you can still prove that one transfer when someone with a reason asks
That is selective disclosure,not a mixer,nothing gets pooled. The person you paid can still know it came from your name. An exchange or an auditor gets proof of that payment, not a tour of everything else you have done. SafeSend is the name of that sender side layer & it is still in development,not a product you can click through today.
Send to Name already lets the address be a name, with a fresh receiving address instead of a permanent public wallet. The prove this one, hide the rest half is what they said is coming, 0G first,do not blur those two.
Private to the world, accountable to the person you paid,those are different jobs & most tools only attempt one of them.
If an exchange asked you to verify a single deposit,would you rather open the wallet,or prove that one payment and stop there?