BTS's 'Love Yourself ? - Answer' will be certified Double Million for selling over 2,000,000 copies approximately two months after release. Albums can receive Gaon certification once the release date has passed the two month mark, beginning with Platinum (250,000 copies), all the way up to Million (1,000,000 copies). As of October 11, 'Love Yourself ? - Answer' is the only Double Million certified album since the Gaon certification system's installation in January of this year. 

Congratulations, BTS!