Privacy by necessity will use end-to-end encryption, as artifacts will end up being propagated on the network. This isn't however so easy for long-lived artifac

Privacy by necessity will use end-to-end encryption, as artifacts will end up being propagated on the network. This isn't however so easy for long-lived artifacts (eg. what happens if your key is compromised sometime in the future), and we will need things such as forward secrecy.