U.S. contract mining firm Core Scientific has agreed on a deal to buy 17,600 mining rigs from Chinese bitcoin hardware maker Bitmain Technologies Inc.The company is buying Bitmain’s next-generation bitcoin (BTC) miner, the Antminer S19, it said in a statement on June 29. The miners will be fully installed at data centers operated by Core Scientific in the U.S. over the next four months, it added.Washington-based Core Scientific did not provide details about cost, but the deal might come to a total of between $30 million and $42 million. Each S19 machine is currently selling at $1,785 while the newer S19 Pro is going for $2,407,…

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