Digital certfifications for March:
http://www.riaj.or.jp/data/others/chart/w150420.html
Kana's GO FOR IT! got updated Double Platinum in Chaku Uta full, 2 new ones for AKB48 (Aitakatta got Double Platinum for Chaku Uta and Kokoro no Placard got Gold for Chaku Uta full) and AKB48's Koi suru no Fortune Cookie got updated to Million for Chaku Uta full.
A certification for Chaku Uta (ringtone) - this is really rare these days.