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Feb 3 2018 Buyers of China made bitcoin mining hardware come from Russia and India despite Beijing 39 s clampdown on trading mining farms and payment channels

Aug 17 2017 The mine belongs to Bitmain a Beijing based company that also makes mining machines that perform billions of calculations per second to try and crack the cryptographic puzzle that yields new bitcoins Fifty Bitmain staff many of them local to Ordos watch over eight buildings crammed with 25 000

Jan 20 2015 Instead the necessary record keeping is decentralised into a blockchain an ever expanding ledger that holds the transaction history of all bitcoins in circulation and lives on the thousands of machines on the bitcoin network But if there is no central authority who decides which transactions are valid and