Bitcoin

Bitcoin (BTC) is the world's first decentralized cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It operates on a peer-to-peer network that allows users to send and receive value without intermediaries like banks or payment processors. Bitcoin transactions are verified by network nodes through cryptography and recorded on a public distributed ledger called a blockchain.

Bitcoin has a fixed supply cap of 21 million coins, making it inherently deflationary — a design choice that contrasts sharply with fiat currencies that can be printed in unlimited quantities. New bitcoins are created through a process called mining, where powerful computers solve complex mathematical puzzles to validate transactions and add new blocks to the blockchain. The mining reward is halved approximately every four years in an event known as the "halving," which reduces the rate of new bitcoin creation and historically has preceded significant price increases.

As both a store of value and a medium of exchange, Bitcoin has evolved from a niche technology experiment into a globally recognized asset class. Institutional adoption has accelerated with the approval of spot Bitcoin ETFs, corporate treasury allocations, and even sovereign nation adoption (El Salvador made Bitcoin legal tender in 2021). Despite its volatility, Bitcoin remains the benchmark against which all other cryptocurrencies are measured, often referred to as "digital gold" for its scarcity properties.