How to do millisecond timestamps on Nostr? 🐒 In chats it's not unusual to send multiple messages during the same second, not to mention other stuff like games.
Chat applications that need millisecond timestamps can add an additional tag for milliseconds
Pow: Add a nonce and make sure the event id, ordered alphabetically, comes after the previous message.
I am kidding... Just watch for conflicts and add +1 to the previous message's created_at...