52 lines
2.1 KiB
Markdown
52 lines
2.1 KiB
Markdown
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# bit
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**B**lockchain g**it** is a proof of concept for a version control system built on a blockchain structure.
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> Notice: This project is an experiment in version control systems, exploring how blockchain concepts could lead to a more robust and secure system. It is not intended to replace existing VCS solutions yet but to serve as a proof of concept and potential foundation for future innovations.
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Each commit is treated as a block in the chain, containing hashes of diffs and the references to parent commits.
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It ensures the repository history is immutable, preventing unnoticable malicious modification through historical commits.
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# Concept
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**With high regards to [Martin](https://github.com/wmartinmimi)**
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- Immutability
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The hash calculation of each commit depends on the hash of its parents, tightly coupling the exact changes commit depends on.
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Any attempts to change a parent commit invalidates the parent's hash, and thus affecting the hash of the child commits due to the coupling, creating a chain effect of modified hashes.
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This allows a clear detection of any modification of historical commits, even with just a recent child commit, by detecting checking any changes in the most recent shared child.
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- Decentralization
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People who cloned the repository will also have a copy of the blockchain,
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allowing people to validate commits and ensure they belong to the original repository in a distributed network.
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# Disadvantages
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- Performance
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As a trade-off to immutability, any rebasing of large amount of commits will result in high amount of hash calculation.
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This may not affect small projects as heavily, but for large project with intensive history management and policy, rehashing may be too computational intensive.
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# Usage
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```
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bit create
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bit verify
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git diff | bit add # or your way to generate diff
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```
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# Building
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You will need to run these with elevated privilages.
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```
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$ make
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# make install
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```
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# Contributions
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Contributions are welcomed, feel free to open a pull request.
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# License
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This project is licensed under the GNU Public License v3.0. See [LICENSE](https://github.com/night0721/bit/blob/master/LICENSE) for more information.
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