Dan (rank) highest level that might be attained, with instructor certification and judge/judgment authorization being understood as higher-level or more sophisticated. Many arts use between one and ten dan ranks: In some martial arts, black belts are worn for all "dan" grades. In others, the highest grade (10th "dan") wears a red colored belt. In Jūdo and Shotokan 6th to 8th "dan" may wear a red and white-patterned belt and 9th to 10th "dan" may wear a solid red belt. There is some variation even within styles. Generally, belts do not have markings that indicate the actual "dan" grade. Okinawan styles used
Judo in Canada Mehmedovic, who competed in the 2008 and 2012 Olympics. Musician Mark Kasprzyk, who previously went by the stage name 'Kazzer', was an alternate for Canada's 2000 Olympic Judo team. In the video for his best known song as Kazzer, "Pedal to the Metal" (2002), Kasprzyk confronts a bully (played by Sebastian Pawlak, also a judo fighter) and disables him using the Judo throw "ippon seoi nage". He now goes by 'Kaz' and is the front man for the group Redlight King, best known for a song titled "Old Man" (2011) that samples fellow Canadian Neil Young's song by the same