You're right, 2017 when the popularity of bitcoin climbed, it actually became a difficult year for the development of bitcoin and other digital currencies. At the beginning of 2017 several countries, such as China and Korea, have been driving bitcoin to be used as a transaction tool in their country. In addition, all activities related to cryptocurrency have also been banned. Different things happen in the country of birth of bitcoin, namely in Japan. Japan amended the law regarding payment services in force in Japan.