Just added the certifications for June 2014 in the lists as I haven't done it so far.
Here's the list:
http://www.riaj.or.jp/data/others/chart/w140718.html
Or as screencap:
Namie Amuro got Platinum for TSUKI and Kana Nishino Gold for We Don't Stop for Single Track (Chaku Uta Full).
Actually almost all digital certifications today are for Single Track, cause Chaku Uta just starts at Double Platinum and digital sales don't seem to be that strong in comparison to some years before for ringtones.