Cy

How do your users know which Public Key belongs to someone they want to communicate with?

Put it in their profile. Seriously that’s it. You can use a profile metadata field if you want to be formal about it.

Why would you need a history of what keys were whose?

People are trying to around here… though they’re like “ban leaf blowers cough cough I mean ban gas powered leaf blowers electric ones are fine I would never question our leaf blower overlords.”

Mower, fine. Weed eater, fine but you better not be using a plastic spool. Leaf blower… what good are they? It’s easy to rake up leaves. Getting them in bags is what’s hard. The vibration from the leaf blower would do more damage to your joints than raking. Leaf blowers don’t do anything else! There is no purpose do them! WHY ARE THEY A THING AAAAA