A partial solution to the PGP bootstrapping problem?

Is it possible: some kind of LetsEncrypt for pgp email addresses? (“LetsPGP”)

N.B. There are some great projects working on improving PGP, in particular Bitmask/LEAP and pEp. The ideas presented here were brainstormed mostly about a year ago (approximately?), so it’s entirely possible that these projects are already addressing some of the problems this post touches on, or perhaps still not yet. Figured I’d braindump to share anyway.

Some brainstormed ideas…

Assorted resources in no particular order…

[edit 12017-Nov-22: adding a few links]