What: bitcoind is a multithreaded C++ program that implements the Bitcoin protocol.

Why: As part of Bitcoin Core installation, bitcoind has been bundled with the original client from version 0.2.6 to 0.4.9, and with Bitcoin-Qt since 0.5.0. It is available across Windows, Mac, and Linux operating systems (32 or 64-bit). Please see the links below for a history of official bitcoind releases; and for downloading, running, and troubleshooting the bitcoind client.

Example: Ubuntu Linux Install:



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