Bitcoin in one sentence
Bitcoin is a scarce digital asset transferred over a public network without requiring a central settlement operator.
How transactions work
Wallets authorize transactions with cryptographic keys. Network participants validate those transactions and record confirmed activity in a shared ledger.
Supply and issuance
Bitcoin has a programmed maximum supply. New supply enters circulation through mining rewards that reduce over time.
Price and liquidity
Bitcoin prices vary across venues because each order book has its own buyers, sellers, spread and depth. Traders should evaluate liquidity rather than looking only at the last price.
Custody and risk
Private-key control, account security, withdrawal verification and position sizing are fundamental. Price volatility can cause rapid losses.