The way I read it, I thought they would just check if the file hash exists on their end. Is that not the case?

dannyw an hour ago | parent | next [-]

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.

	▲	spockz an hour ago \| parent [-]
		Why? The browser can see the file and contents so it can calculate and send the hash over without the actual file ever leaving the browser.

quaintdev an hour ago | parent | prev [-]

> 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.