Riot Blockchain, Inc. (NASDAQ: RIOT) ("Riot" or the "Company"), one of the few Nasdaq listed public cryptocurrency mining companies in the United States, announced the purchase of 3,000 next generation Bitmain S17 Pro Antminers for approximately USD $5 million from BitmainTech PTE. LTD. ("Bitmain"). This upgrade was funded from Riot's available cash on hand.