Bitcoin (BTC) is the first decentralized digital currency that appeared in 2009, by an anonymous person or group under the name "Satoshi Nakamoto". Bitcoin is based on blockchain technology, which is a decentralized public ledger that records all transactions in a transparent and secure manner.
Bitcoin is characterized by being a decentralized currency, which means that it is not subject to the control of governments or financial institutions. Instead, all transactions are verified by a network of computers known as nodes. This model makes Bitcoin a unique financial instrument that avoids traditional restrictions.
Bitcoin is used as a means of exchanging value, and it is also an attractive investment for some individuals and institutions. With a limited supply of only 21 million coins, the limited supply is a major factor in its increasing value over the years.
Despite its large fluctuations in price, Bitcoin has proven itself as a staple in the world of digital currencies, and has opened the door for the emergence of thousands of other currencies that have been inspired by this pioneering project.