japan Japanese chat giant Line sets up blockchain subsidiary in South Korea April 5, 2018 Tokyo-based social messaging platform Line has launched Unblock, a blockchain subsidiary in South Korea, the company announced. Japanese e-commerce platform to replace $9B loyalty program with a cryptocurrency-based one February 28, 2018 Rakuten, Japan's largest e-commerce platform, will transition its $9 billion rewards program to a blockchain-based system using a native coin…