Bitcoin introduction:

With the rapid globalization of the contemporary world, the progress of the internet increases quickly, electronic currency has gradually become the focus of people's attention, because of its unique characteristics, bitcoin which issued in 2009, becoming the largest and the earliest also the most valuable virtual currency,the valuation has reached $24.3 billion, far more than other virtual currencies(currency Wright, LTC, issue, in 2011, the valuation of $36 billion; unlimited money, IFC, the issue of in 2013, the valuation of 20 million dollars).

Bitcoin principle:

The principle of bitcoin is actually a special solution generated by the hash algorithm.A particular solution is a set of equations that can be obtained by a finite or infinite solution.And every special solution can solve the equation and is unique. Bitcoin code is just like the serial number of the RMB, if you know the serial number on the bill,bitcoin system, you will have the bitcoin of this number(just as you have the paper money in reality). The mining process is used by computer for the equations of particular integral of this set in all of the syetem is designed with only 21 million special solution, the digital namely the upper limit.