Riot Blockchain, Inc. (NASDAQ: RIOT) ("Riot" or the "Company"), one of the few Nasdaq-listed cryptocurrency mining companies in the United States, has purchased an additional 1,000 next-generation Bitmain S19 Pro (110 TH) Antminers for USD $2.3 million from BitmainTech PTE. LTD. ("Bitmain"). This purchase was funded using available working capital and Riot has no long-term debt.