Bitcoin (BTC) is the first decentralized digital currency launched in 2009 by a person or group under the name "Satoshi Nakamoto". It relies on blockchain technology to secure transactions and prevent fraud without the need for intermediaries like banks. Bitcoin is characterized by its scarcity, as its maximum supply is only 21 million coins. It is considered an attractive investment due to its significant value increase over the years. It is used in trading, transfers, and some purchases. Despite its price volatility, many see it as "digital gold" and a store of value. The future of Bitcoin remains a topic of debate, but it has certainly changed the concept of money in the world.