The Coinage Act of 1792 introduced the U.S. The United States dollar is the official currency of the United States and several other countries. A few governments have used bitcoin in some capacity. The Library of Congress reports that, as of November 2021, nine countries have fully banned bitcoin use, and a further forty-two have implicitly banned it. It is a compound of the words bit and coin. The word "bitcoin" was defined in a white paper published on October 31, 2008. The currency began use in 2009, when its implementation was released as open-source software. The cryptocurrency was invented in 2008 by an unknown person or group of people using the name Satoshi Nakamoto. Because the token has characteristics of money, it can be thought of as a digital currency.īitcoin transactions are verified by network nodes through cryptography and recorded in a public distributed ledger called a blockchain.
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The user can update the ledger, assigning some of their bitcoin to another entry in the ledger. The protocol specifies that the entry indicates an amount of a token, bitcoin with a minuscule b. In order to add to the ledger, a user must prove they control an entry in the ledger.
Bitcoin is a protocol which implements a public, permanent, and decentralized ledger.
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