At the very beginning, bitcoin had no value at all until March 2010 when it was worth $0.003. Now, one coin is worth over $6,000, and its market capitalization is greater than Goldman Sachs, Bayer or UPS. For an early investor, $1 in bitcoin nine years ago is worth over $2,000,000 today.

The bitcoin whitepaper is still available on the original bitcoin.org wallpaper.

"A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution," it says.

"Digital signatures provide part of the solution, but the main benefits are lost if a trusted third party is still required to prevent double-spending. We propose a solution to the double-spending problem using a peer-to-peer network."

While there are three million users of bitcoin and other cryptocurrencies, the number is expected to hit 200 million by 2024.

Bitcoin sees it trading at about $6,100 on its birthday. The world's largest cryptocurrency peaked at a price of $6,306.58, just 10 days after it broke the $6,000 ceiling for the first time.