There's no magical shorting mechanism -- you'd have to find a counterpart and enter into a futures contract. A few exchanges offer this as a service. [0] http:

There's no magical shorting mechanism -- you'd have to find a counterpart and enter into a futures contract. A few exchanges offer this as a service. [0] http://finance.fortune.cnn.com/2013/12/05/betting-against-bitcoin-bubble/ http://finance.fortune.cnn.com/2013/12/05/betting-against-bi...