Since it was introduced eight years ago, the digital currency Bitcoin has drawn attention for its rise in value. Like other digital currencies, it uses “blockchain” technology, which helps conduct transactions without using banks or credit card companies as conduits. Hari Sreenivasan spoke with Don Tapscott, co-author of "Blockchain Revolution," about the technology's potential.
https://www.youtube.com/watch?v=a8SDnI3fNl0 - Bitcoin documentary discovery channel
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