Bitcoin is the name of a cryptocurrency invented in 2008 by an unknown person or group using the name Satoshi Nakamoto. It was put into use when it was released as open-source software in 2009. Also known for not being tied to any central bank or single administrator, Bitcoin is a decentralized digital currency that can be transferred from user to user on the bitcoin network without the need for intermediaries. Transactions are verified by network nodes via cryptography and recorded in a public ledger called the blockchain. El Salvador declared Bitcoin the official currency with the bill passed by the Senate on June 6, 2021.

As with all revolutionary technologies, Bitcoin's predecessors and the sources that its creator refers to in his article. Wei Dai B-Cash, Nick Szabo BitGold, David Chaum Digicash are the most primitive and government-blocked versions of digital currencies. Satoshi Nakamoto managed to keep his identity secret due to the negative experiences of his predecessors.

The Bitcoin network went live on January 3, 2009. The author of the article is Satoshi Nakamoto. There is controversy over whether it was his real name, pseudonym, or a team title. The maximum number of Bitcoins that can be produced is limited to 21 million by specifying in the genesis block. The first Bitcoin transfer was between Satoshi Nakamoto, cryptographer Hal Finney, who helped him develop it. The first purchase was made on May 22, 2010, purchasing a pizza for 10,000 Bitcoins.

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