Bitcoin, the world's biggest cryptocurrency, fell as much as 14% to $51,541 on Sunday, reversing most of the big gains it made over the past week.

Bitcoin was last trading down 10% at $53,991 as of 9:20 am ET, a whopping $12,000 below record highs set on Wednesday. Smaller rival Ether, the coin linked to the ethereum blockchain network, dropped 10% to $2,101.

Data website CoinMarketCap cited a blackout in China’s Xinjiang region, which reportedly powers a lot of bitcoin mining, for the selloff.

CRYPTO MARKET CAP SURGES TO RECORD $2 TRILLION, BITCOIN AT $1.1 TRILLION

Luke Sully, CEO at digital asset treasury specialist Ledgermatic, said in an email that people "may have sold on the news of the power outage in China and not the impact it actually had on the network".

"The power outage does expose a fundamental weakness; that although the Bitcoin network is decentralized the mining of it is not," Sully added.

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