In nostr, are all DMs encrypted by default and enforced by the protocol, or is encryption of DMs optional?
they are different aspects of the same thing: freedom
if you are talking about how it technically integrates: NIP-57 - https://nips.be/57
if you are talking about how it integrates from an infrastructure standpoint: economically; nostr can't exist without bitcoin
In nostr, are all DMs encrypted by default and enforced by the protocol, or is encryption of DMs optional?