Coinarch

Founded in 2013 and based in Sydney, Australia, Coinarch was a digital currency platform that aimed to bridge the gap between traditional financial services and the emerging Bitcoin market. It provided users with a sophisticated interface to trade Bitcoin, notably offering features like leveraged trading (allowing users to borrow funds to increase their position size) and the ability to short Bitcoin. The company ceased its trading operations and shut down in February 2015, citing the "untenable" and "uncooperative" stance of Australian banking institutions towards digital currency companies at the time.