Bitcoin crossed $14,000 (£10,460; €11,870) on Thursday, surging $2,000 in less than 24 hours, BBC reports.
The cryptocurrency began the year below $1,000 but continues its sharp rise despite warnings of a dangerous bubble.
Bitcoin hit the latest milestone during early trading in Asia, according to the website Coindesk.com.
The new record high comes just days before the launch of bitcoin futures on two exchanges, including the world's largest futures exchange, CME.
Spread betting firm CMC Markets said the rise had all the symptoms of a bubble market, warning "there is no way to know when the bubble will burst".