Coincheck is a Japan based cryptocurrency exchange that was launched in 2014 by Koichiro Wada, who remains the company’s CEO, and Yusuke Otsuka. In addition to being one of Japan’s largest cryptocurrency exchanges, Coincheck is also involved in both lending and payments business.
Coincheck was Japan’s largest cryptocurrency exchange in 2017 based on spot trading data from jpbitcoin.com data posted on Coincheck’s own website. According to a similarweb.com survey they were second largest through the third quarter of 2017.