The encrypted exchange Kraken suspected that the transaction was abnormal, and the short-term spread was as high as $4,000.

Twitter user @ArminVanBitcoin posted a screenshot on Twitter today saying that what happened to Kraken. According to the screenshot, the BTC price reached a maximum of 12,000 US dollars in the early morning, the lowest to 8,000 US dollars, the highest minimum spread of up to 4,000 US dollars, and the current price is 10310.9 US dollars.