South Korea-based Blockchain analytics company, CryptoQuant stated that Chinese mining pool F2Pool started a huge sell-off which crashed the BTC/USD exchange rate by about 20% in less than a day. Ki Young-Ju the CEO of the company listed a series of bearish alerts once BTC started plunging. The index of miners went above 2.5 reflecting more growth in the BTC units that the miners moved from their wallets.