[stavros]

This is what Mozilla Persona did, too. I loved the UX, but it wasn't very successful, unfortunately.

[ErikBjare]

Apparently Persona was even based on some prior work called "VerifiedEmailProtocol", eerily similar to the OP

[callahad]

The Verified Email Protocol got renamed to BrowserID, and Persona was its reference implementation.

This looks broadly similar to that, but with some newer primitives (SD-JWT) and a focus on autocomplete as an entrypoint to the flow. If I recall correctly, the entire JOSE suite (JWT, JWK, JWE, etc.) was still under active iteration while we were building Persona.

And hey, I applaud the effort. Persona got a lot of things right, and I still think we as an industry can do better than Passkeys.

For historic interest, the Persona After Action Report has a few key insights from when we spun down the project: https://wiki.mozilla.org/Identity/Persona_AAR