@tesaguri (also everything supporting the k256 curve feels like it's cluxed on because of blockchain ties??)
But technically they could also just implement Schnorr signatures over ristretto225 to have the same uniqueness guarantees. But that's a little more out there, so maybe support just isn't out there for libraries that match their quality criteria.
Understandable that they don't wanna impl it themselves and/or fund an audit, I guess when the alternative is a NIST curve
スマートカードでActivity Streamsオブジェクトを署名してみてえ〜(謎の欲求)