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Bitcoin Core is a software program created to maintain and support the decentralized nature of Bitcoin, which is currently the most prominent and widely used digital currency in the world. The main purpose of Bitcoin Core is to verify whether transactions on the Bitcoin network are legitimate or not. It does this by looking at various blockchains and deciding which one is the most trustworthy. People who use Bitcoin Core will only accept transactions that appear on the blockchain that the software has selected. This helps to ensure that everyone on the Bitcoin network agrees on which blockchain is the "official" one to use.
General Information
Aspect | Description |
Name |
Bitcoin Core |
First Release |
2009 (as Bitcoin-Qt) |
Latest Version |
25.0 (as of 2023) |
Developer(s) |
Bitcoin Core developers, Satoshi Nakamoto (original) |
Programming Language |
C++, C |
Operating Systems |
Windows, macOS, Linux |
License |
MIT License |
Website |
bitcoincore.org |
Technical Features
Feature | Description |
Full Node Implementation |
- Complete blockchain validation - Transaction verification - Network relay functionality |
Wallet Functionality |
- HD wallet support - Multi-signature support - Watch-only addresses - Coin control features |
Network Protocols |
- P2P protocol implementation - Bitcoin network connectivity - SPV mode support |
Security Features
Feature | Description |
Consensus Rules |
- Implementation of all Bitcoin consensus rules - Block validation - Mining rules enforcement |
Cryptography |
- ECDSA signatures - SHA-256 hashing - Private key management |
Security Measures |
- Encrypted wallet - Backup functionality - Anti-DoS protection |
Components
Component | Description |
Bitcoin Daemon (bitcoind) |
- Command-line interface - Server functionality - RPC interface |
GUI Wallet |
- Graphical user interface - Transaction management - Address book |
Development Tools |
- Test framework - Debugging tools - Network monitors |
Network Functions
Function | Description |
Block Synchronization |
- Initial block download - Block verification - Chain reorganization handling |
Mempool Management |
- Transaction pool maintenance - Fee estimation - Transaction relay |
Peer Management |
- Node discovery - Connection handling - Ban list management |
Configuration Options
Option | Description |
Startup Options |
- Custom data directory - Network selection (mainnet/testnet) - RPC configuration |
Runtime Settings |
- Transaction fee settings - Network parameters - Performance options |
Debug Options |
- Logging levels - Debug categories - Trace options |
Resource Requirements
Resource | Requirements |
Storage |
- Full blockchain (400+ GB) - Index databases - Wallet files |
Memory |
- Minimum: 2 GB RAM - Recommended: 8+ GB RAM |
Network |
- Initial download: 500+ GB - Regular operation: Variable bandwidth |
Development Process
Process | Description |
Code Review |
- Peer review process - Multiple reviewer requirements - Testing requirements |
Release Cycle |
- Major releases - Minor releases - Security updates |
Contributing |
- GitHub repository - Bug reporting - Pull request process |
Use Cases
Use Case | Description |
Individual Users |
- Personal wallet - Transaction verification - Network participation |
Businesses |
- Payment processing - Network validation - Custom applications |
Developers |
- Application building - Network testing - Protocol development |
Support & Community
Resource | Description |
Documentation |
- Developer documentation - User guides - API references |
Community Resources |
- GitHub discussions - IRC channels - Developer meetings |
Support Channels |
- Stack Exchange - GitHub issues - Developer mailing list |