Now in its sixth year of existence, bitcoin is rising in popularity, value, and accessibility. The question remains, however, if the digital currency can realistically open new doors for international commerce. Bitcoin is a digital currency that hit the marketplace back in 2008.  Like other currencies, its algorithm-based exchange rate fluctuates daily. The currency is not backed by a central bank or government; as such, it cannot be stored in a bank. Tightly encrypted online accounts facilitate transactions. The currency has earned a mixed reputation. Some hail bitcoin as the next step in digital exchange, the future of global commerce.  Bitcoin transactions result in fewer fees and capital controls, thus promoting more fluid trade. Others view bitcoin as the currency of thieves, vagabonds and unsavory black market merchants. Some governments won’t even humor bitcoin exchanges with their presence; the Chinese government forced the nation’s largest bitcoin exchange to stop accepting yuan deposits late last year. China’s actions somewhat crush the notion that bitcoin could survive as an independent currency. If other governments follow China’s example, their currencies could no longer be used to fuel bitcoin exchanges. Ultimately, bitcoin would be reduced to figures on a screen with no real world value, the equivalent of gaining or losing points on Candy Crush. But so far that hasn’t happened. While the value of bitcoin slumped miserably after China’s rejection, the currency is rebuilding strength in other markets. In fact, it may be used in American real estate transactions. Bond New York, a Manhattan-based real estate broker, is now accepting bitcoin as payment for real estate. In December, The Wall Street Journal reported that two sellers—one for an $800,000 ranch in the Hamptons and the other for a $7.85 million mansion in Las Vegas—are willing to accept...