https://getsession.org/ There's no identification requirement (phone number, email, etc). Only Loki entry nodes see your IP address. Swarms of nodes cache messages, and there are no central servers to be compromised. Session is a fork of Signal, and Loki is a fork of ZeroNet. I'm 0525c5ba8a4bc6fc6f107b637b5107b6b7abfd1153ea042b5e9fe474acb5d9cf35 if y'all would like to chat.