SharpChain is a free, open source lite version of a blockchain written in C#, designed for developers and students who want to study how blockchain data integrity works. It keeps the core idea of linked, hashed blocks in a small codebase, so you can read the logic without wading through a full network stack.
The project has had no code updates since February 3, 2018. Treat it as a reference implementation rather than current production software, and check the GitHub repository before relying on any part of it.
What Is a Lite Blockchain Project?
A lite blockchain project reproduces the main structure of a blockchain without the full set of features found in live networks. Instead of managing peers, consensus across thousands of nodes or real transactions, it concentrates on blocks, hashes and the rules that link them together.
This makes lite projects useful as teaching tools. You can inspect a few hundred lines of code and see exactly how one block refers to the previous one. For many learners, that clarity matters more than production features.
Who Is SharpChain For?
SharpChain suits C# developers who want to understand blockchain internals before working with larger frameworks. A .NET programmer might use it to test how hashing and chaining behave in a familiar language.
Students, instructors and hobbyists building a demo are also natural audiences. It can serve as a starting point for a classroom exercise or a personal experiment, but it is not intended to secure valuable assets.
How Hash Chains Protect Data Integrity
A hash chain links each record to the one before it. Every block stores the hash of the previous block, so changing an old record would alter every hash that follows. Anyone comparing the stored hashes with recalculated values can spot the change.
This idea is simple but powerful. Data integrity in blockchain-style systems depends less on secrecy and more on the ability to verify that history has not been rewritten. SharpChain demonstrates this principle in a compact form.
Key features
Lightweight blockchain structure
SHA-256 hashing
Supported coins
The project's listed hashing algorithm is SHA-256, the same family of hash function used in several well-known blockchains. SharpChain is best understood as a data-structure project rather than a connection to any live coin network.
How to install SharpChain on Windows
- 1
Open the official repository
Go to the official SharpChain repository on GitHub at github.com/ZenXChaos/SharpChain. Open the Releases section and look for a ready-made Windows build. Download only from the official website or GitHub, never from file-sharing sites.
- 2
Verify the file
Compare the SHA-256 checksum of the downloaded file with the value published on the release page. If the release provides a signature instead, check that as well. Do not run a file whose hash does not match.
- 3
Extract and run
If the download is an archive, extract it to a folder you control and run the executable from there. Windows SmartScreen may warn about unsigned files. Read the warning carefully and continue only if the file came from the verified source.
-
Build from source if needed
If the Releases page has no Windows build, you would need to compile the source code yourself with a C# development environment. This is a build-time step for developers, not a requirement for running a ready-made program.
How to use SharpChain
SharpChain is best approached as a learning exercise. Start with a clear goal, such as seeing how changing one block affects the rest of the chain.
- Launch the program and note how the initial block is created.
- Add a few blocks and record the hash that each one produces.
- Change the data in an earlier block and recalculate the hashes.
- Compare the new hashes with the old ones to see where the chain breaks.
- Repeat the test with different inputs to confirm the pattern.
- Read the C# source alongside the test to connect each step to the code.
Keep notes on what you observe. Because the project has not been updated since 2018, use it to understand concepts rather than to build production features.
Pros & cons
- Free and open source
- Compact C# codebase that is easy to read
- Clear demonstration of SHA-256 hash chaining
- Useful for teaching data integrity concepts
- No code updates since 2018
- Windows support is described as likely, so you must check releases yourself
- Not designed for production use or real funds
- Few documented features compared with modern frameworks
Is SharpChain safe?
SharpChain is open source, so you can inspect the code before running it. Download it only from the official GitHub repository and avoid copies on third-party sites. Compare the file's SHA-256 checksum with the published value, or verify a signature if one exists.
The main risk is the age of the code. With no updates since February 2018, it has not kept pace with newer security practices or dependencies. Do not connect it to live networks, wallets or any system that holds valuable assets. Check the latest status on the official website before you rely on it.
- Official source only. Download from github.com/ZenXChaos/SharpChain. Ignore ads and lookalike domains.
- Check the SHA-256. Compare the installer hash with the value the developer publishes before running it.
- Never share your seed phrase. No developer, support agent or website — including CryptApps — will ever ask for it.
Alternatives
Most tools on this list help you build or test smart contracts. Remix Desktop is an IDE for Solidity, Foundry bundles command-line tools for Ethereum contracts, and the Solidity compiler turns contract code into bytecode. Anchor is a framework for Solana programs.
SharpChain works at a different level. It is a C# lite blockchain for studying how blocks and hashes link together, not a contract environment. If your goal is to deploy contracts, one of the tools above fits better. If you want to understand the data structure beneath blockchains, SharpChain offers a simpler starting point.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- —
- Last update
- 3 Feb 2018
- Windows support
- Likely (builds for Windows; check releases)
- Source code
- github.com/ZenXChaos/SharpChain
Frequently asked questions
SharpChain is generally safe to download only from its official GitHub repository. Its code is open for inspection, but it has had no updates since February 2018. Verify the file's SHA-256 checksum before running it, and keep it away from wallets or funds you care about.
SharpChain is used to learn how a blockchain stores and links data using C#. Developers and students can use it as a compact reference for blocks, hashes and chaining. It is not designed as a production blockchain or a tool for handling real transactions.
SharpChain is described as building for Windows, so Windows support is likely. The best place to check is the Releases page on GitHub, which shows whether a ready-made Windows build is available. If none exists, you may need to compile the source yourself.
SharpChain lists SHA-256 as its hashing algorithm, which is the same family of hash function used by several well-known blockchains. It is best treated as a learning project rather than a mining tool. Do not expect it to earn coins or connect you to a live network.
No. The last code update was February 3, 2018, so the project should be treated as older reference code. Before using it, review the GitHub repository for any newer activity or community forks that may be more current.
If you only want to run a ready-made Windows build, you do not need a development environment. Compiling from source requires a C# toolchain, such as the .NET SDK, but that is a build-time step. Choose a build route based on whether you plan to read or change the code.
Verdict
SharpChain suits developers and students who want a small, readable C# blockchain for studying data integrity. It is free and open source, which makes it accessible for learning. However, it has not been updated since 2018, so it works best as a reference rather than a foundation for new projects. Check the latest version on the official website before you use it, and never use it with real funds.