I guess if they don't have copyrights Coin would not be here at the moment like now.

if you have any proof that they don't have copyrights - post here

You can always ask author of the Flappy.

That doesn't prove anything. Kanyecoin wasn't copyrighted and was like that for a few weeks until they forced to changed. The same thing can happen here.
And again I'm not the one who has to prove anything. This is the same argument as "Well you can't prove god DOESN'T exist".