WindRock interviews Paul Rosenberg, a leading expert on Bitcoin.  Mr. Rosenberg addresses such issues as: what is bitcoin (and other crytopcurrencies); why bitcoin may rise substantially in price and may warrant a place in an investor's portfolio; which firms have adopted bitcoin for payments and why its current acceptance may continue to increase; how bitcoin's blockchain technology can be utilized for other, non-monetary purposes; and what risks may prevent bitcoin from appreciating in price and gaining general acceptance.  January 2015.