Crypto exchange operator HashKey Holdings has cleared its Hong Kong listing hearing after an earlier confidential filing, paving the way for a deal that will test investor confidence in the digital asset sector amid evolving regulation. The operator of Hong Kong’s biggest licensed crypto exchange did not disclose the size or the timing of its initial public offering (IPO) in a filing on Monday. It was reported in October that HashKey could raise as much as US$500 million in a listing this...