Libbitcoin Common

The common libbitcoin-system (formerly "libbitcoin") library is a dependency of all others with the exception of libbitcoin-consensus. It was the first library created and originally contained the core functionality of all of the others.

Example

#include <cstdint>
#include <iostream>
#include <string>
#include <bitcoin/bitcoin.hpp>

// Extract Satoshi's words.
int main()
{
    const auto block = bc::chain::block::genesis_mainnet();
    const auto& tx = block.transactions().front();
    const auto& input = tx.inputs().front();
    const auto script = input.script().to_data(false);
    std::string message(script.begin() + sizeof(uint64_t), script.end());
    std::cout << message << std::endl;
    return 0;
}

The Times 03/Jan/2009 Chancellor on brink of second bailout for banks

Bitcoin Related Features

• Key formats (raw, BIP32, WIF, compressed/uncompressed, minikey)
• Encoding functions (base 2/10/16/58/64/85)
• Hash functions (ripemd160, sha1, sha256, sha512, hmac_sha256, hmac_sha512, pkcs5_pbkdf2_hmac_sha512)
• URL parsing (BIP21 and BIP72)
• Mnemonic functions (BIP39)
• All published mnemonic dictionaries
• Curve math, deterministic ECDSA, verification and encryption functions
• Address functions (P2PKH and P2SH/BIP16)
• Stealth addresses functions for wallets and blockchain search
• Wire and text serializable type library (P2P protocol)
• Bitcoin script engine (see libbitcoin-consensus for more information)
• Asynchronous P2P networking stack built on ASIO (moved to libbitcoin-network in version 3)

General Purpose Features

• Logging utilities
• Patricia Trie template with binary alphabet
• UTF8 Everywhere tools and integration for Windows
• Command line and configuration file utilities based on boost program options

Build and Quality Control

• Autotools builds for GCC/Clang
• All build artifacts generated by libbitcoin-build
• Continuous integration builds via Travis-CI
• Automated test coverage reporting via Coverall
• Visual Studio 2013 project and solution files
• Support for 32/64 bit processors and endianness differences
• Uses C++11 advancements and restricts use of pointers and exceptions

Dependencies (Version2)

• boost
• libsecp256k1
• ICU (optional)

Dependencies (Version3)

• boost
• libsecp256k1
• ICU (optional)
• libpng (optional)
• libqrencode (optional)

See Also

• Libbitcoin