I'm currently working on a decentralized instant messenger Ensichat [1] which does exactly that. Right now, it only works over Bluetooth, but internet support w

I'm currently working on a decentralized instant messenger Ensichat [1] which does exactly that. Right now, it only works over Bluetooth, but internet support will be coming very soon! But as others have mentioned, many problems become really difficult in a decentralized application, most importantly offline messaging. [1] https://github.com/Nutomic/ensichat https://github.com/Nutomic/ensichat