OKX Ventures and Hong Kong-listed HashKey have agreed to invest in Vietnam’s cryptocurrency trading platform CAEX, a move the exchange said would give it enough capital to join the country’s regulated pilot scheme for digital asset trading.The combined capital injection from OKX Ventures and HashKey, which would be deployed in April, aimed to help CAEX – officially known as Vietnam Prosperity Cryptocurrency Asset Exchange Joint Stock Company – reach the minimum charter capital threshold of 10...