Debate has been ongoing since the original bitcoin paper that outlined how the cryptocurrency would work was released in 2008.
A person or group of people called Satoshi Nakamoto are said to be behind it. But, to date, nobody knows who Nakamoto is.
In a post on blogging website Medium, Sahil Gupta, who is a former intern at Musk's space company SpaceX, theorized that "Satoshi is probably Elon."
Gupta, who was at SpaceX in 2015, according to his LinkedIn profile, said Musk could be behind bitcoin because of his deep understanding of economics and cryptography, grip on advanced coding languages, and the fact he is a "polymath".