The Recording Industry Association of Japan (or 'RIAJ' for short), has just released the digital recording sales certifications that artists achieved during the month of January.

To announce the certifications, the RIAJ works together with almost all of the digital and mobile download portals in Japan, including recochoku, dwango, music.jp, mu-mo (Avex), oricon ME, and many more. After compiling the data from all the major download portals, the RIAJ then releases the new certifications on the 20th of every month.

For the RIAJ, the thresholds for digital (online and mobile) certifications are as follows:
Gold - 100,000 downloads, Platinum - 250,000 downloads, Double Platinum 500,000 downloads, Triple Platinum 750,000 downloads, and Million - 1,000,000+ downloads.

The January certifications are as follows:

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< Japanese Chaku-Uta > *


# 2 Million

"Lovers Again" - EXILE : 2006/12/13 (avex)

# Triple Platinum

"Love Story" - Amuro Namie : 2011/11/02 (avex)

# Double Platinum

"FIREWORKS" - EXILE : 2009/07/01 (avex)

"Rising Sun" - EXILE : 2011/07/16 (avex)

"Agehacho" - Porno Graffitti : 2002/11/29 (SME Records)

*Chaku-Uta only has certifications for Double Platinum, Triple Platinum, and Million+!

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< Japanese Chaku-Uta Full >

# Double Platinum

"Gift" - ET-KING : 2007/09/02 (Universal Music)

"Tamashii no Refrain" - Takahashi Yoko : 2007/07/11 (King Records)

# Platinum

"Aruite Ikou" - Ikimonogakari : 2011/11/09 (EPIC Records Japan)

"Rising Sun" - EXILE : 2011/09/14 (avex)

"Itsuka no Merry Christmas" - B'z : 2005/07/01 (Vermillion Records)

"Kazoku ni Narou Yo" - Fukuyama Masaharu : 2011/04/27 (Universal Music)

# Gold

"Doubt & Trust" - access : 2007/10/31 (SMA Records)

"Chance no Junban" - AKB48 : 2010/12/01 (King Records)

"Kaze wa Fuiteiru" - AKB48 : 2011/10/19 (King Records)

"Endless Tears feat. Nakamura Maiko" - CLIFF EDGE : 2011/04/06 (King Records)

"Sekai de Ichiban Suteki na Kimi e" - Sonar Pocket : 2012/01/18 (Tokuma Japan)

"Hitohira no Hana" - Hino Azuki : 2009/03/04 (King Records)

"BAD COMMUNICATION-ULTRA Pleasure Style-" - B'z : 2008/06/25 (Vermillion Records)

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< Japanese Digital (PC) Singles >

# Double Platinum

"Heavy Rotation" - AKB48 : 2010/08/18 (King Records)

# Platinum

"Ryuusei" - Kobukuro : 2010/11/17 (Warner Music Japan)

# Gold

"Kaze wa Fuiteiru" - AKB48 : 2011/10/26 (King Records)

"Koibumi~Love Letter~" - GReeeeN : 2011/11/16 (Universal Music)

"Shuraba" - Tokyo Jihen : 2005/11/02 (EMI Music Japan)

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< Non-Japanese Digital (PC) Singles >

# Platinum

"Baby I Love U (English Ver.)" - CheNelle : 2011/07/20 (EMI Music Japan)

# Gold

"Winter Magic" - KARA : 2011/10/19 (Universal Music) *

* Universal Music categorizes KARA�s releases as non-Japanese.

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Source: RIAJ