Antminer S19 Pro. Publicly traded crypto mining company Riot Blockchain, Inc. says it has purchased 1,000 next generation mining machines, as the Bitcoin (BTC) miners brace for the upcoming halving in mining rewards, expected to occur on May 12.
The company said it has recently completed a purchase of 1,000 units of the next generation Bitmain's S19 (110 TH) Pro Antminer machine,