FILE - In this Monday, Jan. 6, 2014 file photo, Japan's Finance Minister Taro Aso speaks at the opening ceremony of the new year's first trading at the Tokyo Stock Exchange in Tokyo. Aso scoffed at ... more 
FILE - In this Monday, Jan. 6, 2014 file photo, Japan's Finance Minister Taro Aso speaks at the opening ceremony of the new year's first trading at the Tokyo Stock Exchange in Tokyo. Aso scoffed at Bitcoin’s woes as inevitable Friday, Feb. 28, and Vietnam banned the virtual currency, but enthusiasm was undimmed among its supporters in the aftermath of the collapse of one of the biggest bitcoin exchanges. (AP Photo/Shizuo Kambayashi, File) less 
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Associated Press | Photo By Shizuo Kambayashi, File
Fri, Feb 28, 2014 4:36 AM EST