[jgawne]

A better answer is that you really cannot copyright a title. What protects it is a trademark registration. IP law is pretty specialized and while a lot of people claim to know everything, few do. In all cases consult an actual IP lawyer.

And dealing with any of this internationally is a major mess. Do a trademark search of the title, and if no one has it claimed you can probably go ahead and use it with no actual legal issues- although what Youtube would do is another thing as that is set by their Terms of use.