Another approach at a more general messaging system that can be used to similar ends is Whisper, by the same community that makes Ethereum: https://www.youtube.

Another approach at a more general messaging system that can be used to similar ends is Whisper, by the same community that makes Ethereum: https://www.youtube.com/watch?v=BrWlAtfqF6s https://www.youtube.com/watch?v=BrWlAtfqF6s