[qroshan]

The problem with that is, the video can only be watched at it's true raw form. Any edits will need to be re-signed with "Edited by X". Now, X has to be trusted and not compromised (by money, bias or hacks).

If X is CNN, then half the population will not believe it. If X is Fox, the other half won't believe. Bottomline, the world will be truly living in virtual alternative universes and it doesn't even matter what truth is as long as everyone in that world believe that.

[uHuge]

Watching and verifying are two separate procedures, if the edited piece has a link to the original source, the verification can pass to that.

[panda88888]

This is actually a valid use case of blockchain, where each edit is signed by an entity in cascading fashion.