$BTC Bitcoin (BTC) is the first decentralized cryptocurrency, created in 2009 by an anonymous developer under the pseudonym Satoshi Nakamoto. It functions as a digital payment system without intermediaries, based on blockchain technology, which records transactions in a public ledger. Its supply is limited to 21 million coins, making it a deflationary asset. Bitcoin is used as a store of value, medium of exchange, and hedge against inflation. It is highly volatile, but its adoption has grown globally in financial, commercial, and technological sectors. Its security relies on mining, which secures the network through cryptography.