The way I read it, I thought they would just check if the file hash exists on their end. Is that not the case?
> I thought they would just check if the file hash exists on their end
That would invalidate the hash on minor changes. Too much effort and not enough return.
That’s incompatible with the file not leaving your browser, which you can trivially verify with the Network tab in chrome (or wireshack, etc).
This is just a C2PA metadata checker.