When was Bitcoin created?

Bitcoin was created by an individual or group of individuals using the pseudonym Satoshi Nakamoto. The Bitcoin whitepaper, titled "Bitcoin: A Peer-to-Peer Electronic Cash System," was published by Nakamoto on October 31, 2008. The first block of the Bitcoin blockchain, known as the "genesis block," was mined on January 3, 2009. This date is often referred to as the birthday of Bitcoin, marking its official launch and the beginning of its decentralized network.