Cause People live in comtemporary have reached a consensus that Bitcoin is valuable. And when lots of people reached that consense, the value beheld by the item itself is no longer vital.For example, the currency has slight value, and it is just a paper. However, who can say they have no value today? The world is developing, the fast speed of our life stresses the urgent need for fast transaction speed. Cryptocurreny is all they need. Why is it GO VIRAL now? Partly because of unstoppable momentum, which some see as a CERTAIN sign of a bubble. In Bitcoin’s case, every rise above the $1,000 mark sparks a wave of investment frenzy. In the past December, the price of Bitcoin once exceeded the $20,000 mark. Many virtual currencies have multiplied by dozens or hundreds of times, and it is too easy to make money. Many people want to come in and make a fortune. People spread the news and spread the news, so the virtual currency became popular. In addition, the popularity of virtual currency is also driven by economic, financial and cultural development factors. Regulators in countries such as Japan have approved bitcoin transactions. The soaring stock market and the continued decline in the unemployment rate in the United States have also contributed to the fuel. These factors have made investors more eager to make high-risk investments, which indirectly led to the rise of virtual currencies.