The domain name Bitcoin.org was registered on 18 August 2008. The assumed pseudonym for the unknown Bitcoin developer is Satoshi Nakamoto. No one knows for sure who established the world's first and most widely used cryptocurrency, but it is believed to have been created by a single person.
Satoshi's white paper would become the Magna Carta for how Bitcoin functions today. "I've been working on a new electronic payment system that's totally peer-to-peer, with no trusted third party," Satoshi said.
The first Bitcoin block was mined on 3rd January 2009 it contains the text "The Times 03/Jan/2009 Chancellor on the brink of second bailout for banks". It was just 5 days after the first mining of Bitcoin, that the first version of Bitcoin software was launched.
The Bitcoin system works on a network of computers (also known as "nodes" or "miners") that all execute Bitcoin's code and store its blockchain. No one can trick the system since all of the machines have the same list of blocks and transactions, and can observe these new blocks as they're filled with recent Bitcoin transactions.