If I have 2 adsense and one gets banned because i copyrighted videos on youtube, will they be able to track down the other one? and will they ban it?
i have them set to the same address. am i allowed to have 2 in the first place?
what are the chances of it getting banned for copyright videos?
am i ever allowed to monetize again with adsense or ip banned forever?

Its against TOS to have two accounts. And they may be able to track the other account. Its best not to do wrong with Adsence, as it is unlikely you will be able to open another account.

my adsense account also banned due to same reasons