Our closest example: Tor drug sites (darknet markets) safeguard user addresses via: 1) Tor's onion routing for IP anonymity; 2) PGP encryption; buyers encrypt shipping info with sellers' public keys, decryptable only by them; 3) No central storage of plaintext data; 4) Escrow & feedback to build trust without revealing identities.
Discussion
Great. Like it. Needs to be automated, somehow. Also, the physical address is a problem. Need local delivery hubs, or geo location points (encrypted of course)? And a transportation network, where people can just volunteer to pickup and deliver for zaps, based on geo locations?
I don’t know how to program anything. But can all that be added to Damus? To make it simple?