Nostr DMs are not private
nostr:npub1ujm8l8mupgwvu8pye2ged78pg3huectlmm6at66x5wffgvl2fkgsygt8l4 just DM'ed nostr:npub1ehg5cqekjlj2jqqhc7z9y2sjq4am42dntahcyn225twv9xdu2m2sl5qe5t
message length: ~40
Discussion
nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s what are these posts? Lol
It’s just an automated account showing who is DMing who. The note type for DMs includes the public key of each party and an encrypted payload. There’s a calculation to estimate the size of the message based on the size of the encrypted message.
See here: https://github.com/nostr-protocol/nips/blob/master/04.md
Their challenge is to the way NIP-04 works and the disclosure of the parties involved in the DM.