What an incredible public good you are doing by carefully critically analyzing the crypto pieces of these specs. It’s really hard to appreciate how much background learning and then careful effort reading every detail of the spec goes into that. Thank you so much!
What’s ECDAA support like in browsers, backend libraries or hardware tokens?
Chrome doesn’t implement it. Neither does Firefox. I don’t know about any other browsers.
As far as everything else: https://twitter.com/herrjemand/status/1031511164671483906