proof of reserves are dumb. they don't actually stop theft or anything. and you weirdos keep freezing people's accounts for made up reasons so what good is any of this anyway?
Not a single Bitcoin exchange has implemented Proof of Reserves in 2025.
You should be able to verify that your bitcoin is real, every step of the way.

We prove to our clients each month that their unique balance is part of the total assets under custody and our liabilities.
You can walk through the flow on our page. https://river.com/reserves
Discussion
So you'd prefer then not to show and push transparency
hi -- we were trying to zap you -- but it looks like you haven’t set up a NIP-05 or ⚡ lightning address yet — grab one free at https://rizful.com .. then pls reply here and we will try zapping you...
there is no upside for a custodian to publish proof of reserves. they are just advertising how many funds an attacker could steal. and if they want to steal from their own reserves they can just do that whenever they want and stop publishing. it is security theater. I literally don't want them to publish proof of reserves at all.
and again, why the fuck should I care if they weren't fractional yesterday? they have no way of proving that they are not going to become fractional tomorrow. they have no way of proving that they will not freeze my account for made up reasons at some point in the future, and often the state forces them not to tell me why my account is frozen. proof of reserves fix nothing.