This is the talk that introduced Upspin: https://www.youtube.com/watch?v=ENLWEfi0Tkg
1: https://upspin.io/doc/arch.md
2: https://openpgp.dev/book/certificates.html#user-attributes-i...
I regularly referred others to Upspin’s source tree [1] if they wondered about larger systems written in Go but weren’t too big and gross like Kubernetes.
I’m sad to see this chapter of their work shut down, but excited to see where each of them goes from here.