Does one exist which does not require integration with Apple, Google, or Microsoft services?

I doubt that will ever matter. There are niche alternatives to lots of American tech. But that isn't what the "digital sovereignty" push is about. It's about not building fundamental services on American Big Tech in the first place.

But it's obvious that nobody really cares about it after all. For instance, Germany's own official EUDI wallet for Android explicitly requires Google Play Integrity

https://bmi.usercontent.opencode.de/eudi-wallet/wallet-devel...

Okay scratch my doubtfulness from the other comment, of course you're right what was I even thinking. Man I really hate that.

The play integrity dependency was removed in version 0.15.0

You are linking to version 0.14.0 of the documentation. The latest version is 0.19.0. The release notes of 0.15.0 mention that they dropped the Play Integrity dependency

Good news

> But it's obvious that nobody really cares about it after all.

That's not remotely obvious.

The push for digital sovereignty is only a few months old. Governments work on timescales of years—or even decades.

It's certainly true that it would be good if they could be a bit more responsive, particularly in this fast-paced digital age. But demanding them to be doing that already, today, is just not living in the real world.

Its an open spefication but the identity issuers (your country) locks it down so only their own wallet can be used for their countries ID