[barnaby]

This is very cool. Thank you for working on it.

I do know a team whom you should work with: keybase.io

Keybase.io have an early-level product which would help with your keyserver issue. It has a CORS-enabled API, a commandline tool, an online interface for encrypting, signing, verifying, etc. and a "ring of trust" tool that follows the modern social network model (where, you can "track" somebody and it auto-signs their keys each time they upgrade.