“Bitcoin bank” Circle is betting big on China. The company has announced that it raised $60 million in a new Series D funding round led by Beijing-based investment firm IDG Capital, an existing Circle investor. The company also announced the opening of its Chinese subsidiary Circle China, which had been separately funded earlier.Participants in the new Circle funding round include global venture capital and private equity firm, Breyer Capital, General Catalyst Partners and a group of Chinese firms including; Baidu, China International Capital Corporation ALPHA, China Everbright Limited, Wanxiang and CreditEase.