Bitcoin extends losses to three-week trough

Bitcoin fell marginally on Friday for another session to near three-week lows hit yesterday, while on track for a weekly loss as a crypto selloff wave resumes. 

At Bitstamp, Bitcoin shed $17, or 0.5% to $3,610, with an intraday high at $3,657, and a low at $3,582. 

Bitcoin tumbled 9.5% on Thursday, the third loss in four days, and the heftiest since November 19, while marking three-week lows at $3,503. 

Market value of cryptocurrencies fell a billion dollars on Friday to a total of $121 billion, a December 28 low. 

Bitcoin is down 11% this week, heading for the second weekly loss in three. 

Analysts believe that one of the major hurdles standing against cryptocurrencies is the lack of US regulatory clarity when it come to classifying them.

Otherwise, Bloomberg reported that an ECB member warned that the crypto bubble is starting to already burst. 

Ardo Hansson, governor of Estonia's central bank warned that cryptocurrency are heading to an end, with the world currently witenssing "the collapse" according to him.