DJMaesen why do you need to prove anything? 😃, once you post something online its "free for all".
Include a LICENSE.txt and hope some good ol fella will follow it through.
IF ya got elon money to spend you could higher nintendo lawyers to raid them if you really wanted.
Look at the what ws that game marvel or some other game hero shooter or maybe some fps or something that is upcomming that stole art "textures" from some no good bum online and no the company said they didnt know better..
One tweet can put a company down in no time. So i guess hope your twitter account dont get deleted 😃.