K-pop group BTS was the only foreign artist to release a double platinum album in the Japanese market in 2017.

The Recording Industry Association of Japan announced Monday that the group’s eighth single, “MIC Drop/DNA/Crystal Snow,” topped 500,000 sales.

The RIAJ announces certifications once a month based on accumulated sales. Albums are certified gold if they reach 100,000 sales, platinum if they hit 250,000, double platinum if they sell 500,000 copies, triple platinum for 750,000, and “million discs” if sales reach seven figures.

BTS' album jacket for Japanese single (Big Hit Entertainment)

BTS’ agency Big Hit Entertainment said that BTS was the only foreign artist to record a double platinum single last year.

“MIC Drop/DNA/Crystal Snow” was released in Japan last December and peaked at No. 1 on the Oricon daily single chart for six days straight. The single also reached No. 13 on the Oricon yearly single chart, the highest among all Korean singers.

By Cho Yun-myung (yunc39@heraldcorp.com)