Bitcoin is a digital currency, not a company. Therefore there is no cash flow that can be analyzed or financial statements to determine the investment time. Bitcoin's volatility is so wild. For example, in December 2017, there was one condition that showed that the bitcoin exchange rate dropped to 1,000 US dollars, equivalent to Rp 13.3 million in one hour. Nevertheless, people who believe in bitcoin assume that the digital currency will be used by many people in the future. I don't know when it happened.