Vancouver, British Columbia--(Newsfile Corp. - December 20, 2021) - HIVE Blockchain Technologies Ltd. (TSXV: HIVE) (NASDAQ: HIVE) (FSE: HBF) (the "Company" or "HIVE") announces that management will host a webcast on Tuesday, December 21, 2021, at 4:00 p.m. Eastern Time to provide a corporate update and announce results from its 2021 Annual...