darknet market with PGP 3
https://extra-wiki.win/index.php/Understanding_Payment_Privacy_on_a_Darknet_Market:_Bitcoin,_Monero,_and_Escrow
I've been poking around a darknet market that requires PGP for all communications, and it's wild how much more secure everything feels once you get the hang of encrypting your messages and verifying vendors' keys.