Satoshi Nakamoto is credited with designing Bitcoin. Nakamoto claims to be a man living in Japan born on April 5th, 1975 but there are speculations that he is actually either an individual programmer or group of programmers with a penchant for computer science and cryptography scattered around the United States or Europe. Nakamoto is believed to have created the first blockchain database and have been the first to solve the double spending problem other digital currency failed to. While Bitcoin’s creator is shrouded in mystery, his Wizard of Oz status hasn’t stopped the digital currency from becoming increasingly popular with individuals, businesses, and even governments.
Our second assumption is that the supply of bitcoin will approach 21 million as specified in the current protocol. To give some context, the current supply of bitcoin is around 17 million, the rate at which bitcoin is released decreases by half roughly every four years, and the supply should get past 19 million in the year 2022. The key part of this assumption is that the protocol will not be changed. Note that changing the protocol would require the concurrence of a majority of the computing power engaged in bitcoin mining. (Related: How Does Bitcoin Mining Work?)