My first name asserted in a conversation is one, as it's sufficient to define an endpoint for a low value transaction. 1:1 with cash or bitcoin is easy, because

My first name asserted in a conversation is one, as it's sufficient to define an endpoint for a low value transaction. 1:1 with cash or bitcoin is easy, because it's a straight retail transction. It only gets complicated when you have an intermediary. Identity is mainly a problem for dealing with intermediaries, and not for people who want to do things.