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 A symbol in the window of a local pub indicates the acceptance of Bitcoins for payment on April 11, 2013 in Berlin, Germany. Bitcoins are a digital currency traded on the MTGox exchange
 A symbol in the window of a local pub indicates the acceptance of Bitcoins for payment on April 11, 2013 in Berlin, Germany. Bitcoins are a digital currency traded on the MTGox exchange

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    Here's how Bitcoin works

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Here's how Bitcoin works

CNN's Laurie Segall explains what Bitcoin is and how it works.

Here's how Bitcoin works

CNN's Laurie Segall explains what Bitcoin is and how it works.