The fakes do a DECENT job, but you can still spot the edges...

These fakes coming out may be more convincing, but then, even if a real video comes out, it will be called a deep fake.

I could see these deep fake videos requiring some serious server time to get the job done too... I don't think too many people are going to use their desktop running for like a month just to build a 30 second clip.

I like your plan to use the block chain technology, that would be a great way to establish a YouTube replacement, and would help protect content creators.