Bitcoin is the world's first distributed cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. In practice, it enables peer-to-peer electronic cash transactions without intermediaries like banks or governments, operating on a blockchain secured by Proof of Work mining and the SHA-256 cryptographic algorithm.
In practice, with a fixed supply cap of 21 million coins and programmatic halvings every four years that reduce miner rewards, Bitcoin is designed as a deflationary digital asset often called "digital gold." Its value stems from solving the double-spending problem without trusted intermediaries, creating the first truly scarce digital asset with censorship resistance and permissionless access that no government, corporation, or individual can control. Bitcoin operates as a distributed peer-to-peer network where transactions are recorded on a public ledger called the blockchain, distributed across thousands of computers globally.
Public reference history for this asset dates back to 2009-01-03. Project references place Bitcoin on the Bitcoin network. Market data providers usually group Bitcoin with Smart Contract Platform, Bitcoin Ecosystem, and Layer 1 (L1). Research links also include a whitepaper or docs reference and open-source code links for deeper verification.