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 could raise around US$500 million in a listing this month, according to a source familiar with the matter. HashKey did not disclose the size or the timing of its initial public offering (IPO) in a filing on Monda ...