KEY POINTS
  • Bitcoin surged more than 5 percent at one point Thursday, reaching a price as high as $1,839.23
  • Analyst Brian Kelly attributes the bitcoin rally to Japan's legalization of the digital currency in April.
  • Bitcoin is up more than 30 percent in May.

The price of hit a record high Thursday, crossing above $1800 just two days after rising above $1700 for the first time.

Bitcoin jumped more than 5 percent at one point, reaching a price as high as $1,839.23, according to CoinDesk. The digital currency is now up roughly 36 percent so far this month.