CNBC's Mary Thompson reports on the first congressional hearings on how to regulate digital currencies without diminishing the promise that they hold. Thompson says Bitcoin is the preferred form of ... more 
CNBC's Mary Thompson reports on the first congressional hearings on how to regulate digital currencies without diminishing the promise that they hold. Thompson says Bitcoin is the preferred form of money for criminals. less 
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Mon, Nov 18, 2013 2:56 PM EST