The Bitcoin website.
The Bitcoin website. - 
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It has already been a rough year for virtual currencies like Bitcoin, and for some of the dark online markets that often use virtual currencies. In the wake of online illegal drug market Silk Road being shut down, a second version of Silk Road was hacked, and a similar online market called Utopia has also been shuttered by authorities. Dave Lee is a technology reporter for the BBC, and joined us to talk about it.

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