Hello Czino!. Ultimate proof may be non other than to be "there", no? right next to the guy at the moment of posting...
Here at nostr I think if the nsec gets stolen it could happen; same as faked accidents 🧐
Discussion
You are absolutely right, I don't know if you are the real moizen posting here!
At the very least we still have that safeguard and not a single person can exploit the nostr protocol to post on behalf of any account. That's what I am referring to.
Getting your nsec leaked or stolen sounds catastrophic though. There's no way back.