Bitcoin Core Node Software

Bitcoin Core is the reference implementation of the Bitcoin protocol, providing a full node, wallet, and mining software for the Bitcoin network. Originally released in 2009 by Satoshi Nakamoto as Bitcoin-Qt, the software was renamed Bitcoin Core in 2014 and is maintained by a global community of contributors. Key features: full node (validates all blocks and transactions since genesis block in 2009, enforcing all consensus rules and providing maximum security and trustless verification of the Bitcoin network). Bitcoin consensus (implements all Bitcoin Improvement Proposals BIPs including SegWit BIP141, Taproot BIP340-342, CHECKTEMPLATEVERIFY, and all soft fork and hard fork consensus rules). P2P networking (peer-to-peer protocol connecting to other Bitcoin nodes for block and transaction relay with address management and peer selection). Mempool (transaction memory pool for tracking unconfirmed transactions with fee estimation and replacement via RBF Replace-By-Fee and CPFP Child-Pays-For-Parent). Wallet (built-in HD hierarchical deterministic wallet with BIP32/39/44 support, address management, transaction creation, coin selection, and fee management). RPC interface (JSON-RPC API for programmatic access to node functionality including blockchain queries, wallet operations, and network management). REST API (HTTP REST interface for blockchain data queries without RPC authentication). ZMQ (ZeroMQ notifications for real-time block, transaction, and mempool event notifications). Pruning (configurable blockchain pruning to reduce disk usage while maintaining full validation). Compact block relay (BIP152 compact blocks for efficient block propagation reducing bandwidth). Tor support (connect via Tor network for enhanced privacy and censorship resistance). I2P support (connect via I2P anonymous network layer). Descriptor wallets (advanced wallet with output descriptors for complex spending policies and hardware wallet integration).