A Bitcoin address is a unique identifier, similar to a bank account number, that allows users to send, receive, and store Bitcoin (BTC) on the blockchain. It is a string of 26-35 alphanumeric characters, often starting with "1," "3," or "bc1," depending on the address type (Legacy, SegWit, or Taproot). Bitcoin addresses are generated from cryptographic private keys through a one-way mathematical process, ensuring security. Unlike traditional banking details, Bitcoin addresses do not reveal personal information, providing pseudonymity.

Each address is case-sensitive and must be entered accurately in transactions, as errors can lead to irreversible loss of funds. Users can generate multiple addresses for enhanced privacy. When someone sends Bitcoin, the transaction is recorded on the public blockchain, verifying the transfer without needing a third party. Modern wallets often simplify this process by using QR codes for easy scanning.

Bitcoin addresses are disposable, meaning users can create new ones for each transaction to improve security. However, they should always be backed up via a wallet’s recovery phrase (seed phrase) to prevent loss of access. By serving as a secure gateway for blockchain transactions, Bitcoin addresses play a crucial role in decentralised finance (DeFi) and digital asset management.