What is Bitcoin Core?

Last updated 4 min read

Bitcoin Core is the original and most widely used software for interacting with the Bitcoin network. While Bitcoin refers to the cryptocurrency and its decentralized network, Bitcoin Core is the software that implements the protocol, enabling functions like mining, transaction validation, and running a full node.

Bitcoin Core’s open-source nature and community-driven development are essential to its integrity and security. Its role is not to control Bitcoin but to provide a reference implementation for the network.

Features of Bitcoin Core

1. Comprehensive Functionality:

Bitcoin Core includes tools for validating transactions, running a wallet, and contributing to network security by relaying transactions. It also supports mining but is not optimized for modern large-scale mining operations.

2. Privacy and Sovereignty:

Running a full node with Bitcoin Core allows users to verify their own transactions and avoid relying on third-party services.

3. Decentralized Development:

Bitcoin Core development is collaborative, with contributors from around the world. Updates are made through an open review process, ensuring transparency and trust.

How Bitcoin Core Development works

Bitcoin Core is maintained on GitHub and released under an MIT license, making it open. Updates follow a rigorous process:

  1. Proposal: Ideas are introduced as Bitcoin Improvement Proposals (BIPs).
  2. Review: Developers review and test the proposed changes.
  3. Consensus: Changes are only merged when a general consensus is reached among the community.
  4. Release: New versions of Bitcoin Core are released periodically, with users (Node Runners) deciding whether to adopt them.

Key Milestones in Bitcoin Core’s History

From its first release by Satoshi Nakamoto in 2009 to major updates like SegWit and Taproot, Bitcoin Core’s codebase has grown significantly. This evolution reflects improvements in scalability, usability, and security without altering Bitcoin’s fundamental principles.

Who Funds Bitcoin Core Development?

In its early days, Bitcoin Core development relied on volunteers. Today, developers are often supported by grants and organizations like Blockstream, Chaincode Labs, and the Human Rights Foundation. These funders typically allow developers to focus on what they believe is most critical for Bitcoin’s future.

Final Thoughts

  • Bitcoin Core is the Bitcoin Software
  • Bitcoin Core is developed decentralized
  • Bitcoin Core is supported by global contributors, with funding from organizations

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