Hashkey Group, which runs one of the two licensed crypto exchanges in Hong Kong, has joined the unicorn club after completing a nearly $100 million round amid renewed optimism in the rattled digital assets market. Hashkey said on Tuesday that the Series A round valued the six-year-old startup at more than $1.2 billion. Joining the round were existing shareholders as well as new investors, Hashkey said. OKX Ventures, the investment arm of crypto exchange OKX, is one of the lead investors, according to people familiar with the matter. Hashkey declined to disclose investors’ information; OKX Ventures declined to comment.