Blackout had sold over half a million copies in the United States and was certified platinum by the RIAA , before April 2015 .
As of March 2015 , the album had sold one million copies in the United States , and has been certified platinum by the Recording Industry Association of America ( RIAA ) .In Canada , Blackout debuted atop the Canadian Albums Chart with sales of 29,000 units , becoming her first number-one album there since Britney ( 2001 ) .
Blackout -LRB-Britney Spears album-RRB-