To project the long-term trend of bitcoin price, I built up a bitcoin trend chart in log-scale to be the y-axis. The exponential equation shown on the diagram becomes a straight line. The R-Squared value is 0.7969 ~ 0.8. It is a value between 0 and 1. If the curve is very fit the data, the value will be near to 1. It means the trend of the bitcoin price develops in an exponential curve pattern. In this chart, it projects that bitcoin price will reach $8,000 to $9,000 in September 2017. It may reach over $12,000 in 2019.
The explanation in English version