>We have public-key infrastructure for machines. We don’t have it for people.

We do, you just don't know about:)

SDK: https://github.com/CipherTrustee/certisfy-js

Web trust use: https://bsky.app/profile/bitlooter.bsky.social

Some examples of how you could leverage it: https://blog.certisfy.com/

Happy to answer questions.