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Bitcoin was down 12.6 percent on the Bitstamp exchange at $14,500.76 as of 0530 GMT, after rising to a record $16,666.66.
It was still up more than 30 percent for the week, as investors debated about whether the cryptocurrency was in a bubble that was about to burst.
(Reporting by Tokyo markets team; Editing by Kim Coghill)
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)