Definition and goal
Bitcoin is a peer-to-peer electronic cash system. Participants broadcast transactions and use cryptographic proof of control without a central clearing institution.
Public ledger
Transactions are shared and recorded on a public chain that anyone can verify. Addresses are visible, so public records should not be confused with complete anonymity.
Consensus and mining
Miners collect transactions and compete to add blocks using proof of work. Nodes check signatures, block rules, and issuance before accepting a chain.
Limits and responsibility
Confirmations, fees, and congestion vary. A lost private key is usually unrecoverable, so learn backup, scam, and local compliance basics first.
参考来源
Sources are checked by the editorial team at publication.