The price of bitcoin on May 28 fell to its lowest level in a week – $35,539, a drop was 8.2 percent.

The agency estimates that Bitcoin lost 37 percent in May. If the trend continues, it could be the worst monthly result in nearly a decade – since September 2011.

On May 27, the head of the Central Bank of Japan, Kuroda, expressed skepticism about bitcoin. He pointed to the speculative nature of Bitcoin trading and its excessive volatility.