Question: can #Nostr be used as pure protocol ( so ignoring the notes/media side of it ) via tool that shares meta ( which could contain anything ) between clients which are able to listen to those metas, using custom kind or NIP ? Like ( i.e. ) sharing my position in the meta specifying kind = 123456 or NIP = 654321 . Said first random thing that came up to my mind. The point is, can I use it as pure protocol to send "data" and proof-of for recipient confirmation? Is there any reason which could lead reply server to ban such messages? I know I might spin up a custom relay, but I want to know if this could be a reason to do so #developer #dev