Promenade by nostr:nprofile1qqsrhuxx8l9ex335q7he0f09aej04zpazpl0ne2cgukyawd24mayt8g2lcy6q and frostr by nostr:nprofile1qqsyy2wzruqsr27rhfzjx0shd6t4l20xwxa33fnj900hwf46y4z9l7gwlvtz8 and Austin might be helpful on the technical side. I like the idea of aligning key storage with existing trust relationships a lot.
