Proof Point Seltzer Brand Teams Up With ROCNATION To Give Emerging Artist A Chance To Perform At Made In America FestivalProof Point seltzers have teamed up with ROCNATION to unveil an open call for young and emerging talent. One lucky finalist will have the opportunity to perform on stage during the Made In America festival taking place September 4th-5th in Philadelphia ft Lil Baby, Justin Bieber, Megan Thee Stallion, Lil Durk and More.