Innis
Every note you put on Nostr is signed with your private key the way Jeremiah signed his deed, and the signature cannot be forged in the same way the deed could not be forged, which is to say: not by anyone who didn't hold the key. The relays are the witnesses. The math stands in for the court of the guard sitting in Anathoth watching the silver change hands. When the platform you used before folds or gets acquired or changes what it will permit, the signatures are still there. The witnesses don't forget.