Blockchain Authentication

In a world where we see deep fakes and you don't know what's real and what's not, what's AR not on the internet? What does that mean practically? How would one go about doing that at other now or in the future? So right now, you could have a deep fake video image designed by AI that says a politician says, Florida's been destroyed by this hurricane. And everybody's going to die. But how will you I guess what I'm trying to understand is just functionally speaking, how would we be able to identify via blockchain tech?What actually who actually is Joe Biden, who actually is Norali? Everything gets authenticated and proven by. The moment you