Flax for Windows is a free, open source blockchain node client for people who want to run a Chia-style node on their own PC. It is a fork of Chia, so the codebase and general workflow will feel familiar to anyone who has worked with Chia's software. The main audience is developers, node operators and hobbyists who want to read or change the source code rather than people looking for a polished consumer app.
Before you install anything, note two things. The most recent code update in the project's repository dates to November 2022, more than two years ago, so do not expect recent fixes or active development. Windows support is also listed as likely rather than guaranteed, so the release page is the place to confirm what you can actually install. This guide covers what the program does, how to set it up, and what to watch for.
Who Should Consider Flax on Windows?
Flax suits a fairly narrow group of readers. Developers who want to study a Chia-style blockchain in a language they already know will get the most from it. Students learning how node software handles blocks, peers and wallet logic can use the codebase as a practical example.
Operators who already run Chia-family software may find the structure familiar, which shortens the learning curve. Someone who wants a plug-and-play experience with a graphical dashboard and frequent updates will likely be better served by a more actively maintained project.
A realistic scenario looks like this: a developer sets up a test environment on a Windows PC, reads the code around transaction validation, and makes small changes to see how the node reacts. That kind of hands-on exploration is where an open source fork is most useful, as long as the developer treats it as a study and testing tool.
How a Blockchain Node Client Handles Data
A node client is the software that connects your computer to a peer-to-peer network. It downloads blocks from other peers, checks each one against the network's rules, and keeps a local copy of the ledger. This process is called syncing, and the first sync is usually the slowest step because the node has to catch up on the entire history.
Once synced, a node relays new transactions and blocks to its peers. The more nodes that run this way, the more resilient the network is to outages. Nodes also answer requests from wallets and other local tools, usually through an interface you control.
When you start a node for the first time, expect heavy disk and network activity. Keep the machine awake during syncing and avoid interrupting the process. If the node appears stuck, the log file is the first place to look, because it usually shows whether the node is waiting for peers or failing to validate a block.
Why Forks Deserve Extra Scrutiny
A fork is a copy of existing software that is changed to create a separate project. Forks inherit a lot of working code, which saves development time, but they also inherit assumptions and bugs from the original. A fork with a smaller community may receive fewer independent reviews, so more of the checking falls on the user.
When evaluating a fork, look at a few concrete signals: when the last commit was made, whether open issues are being handled, and whether releases come with verifiable files. Compare the repository's activity with that of the parent project you already know. A large gap in activity is a reason to slow down.
Forks also differ in network rules, so running a fork node does not connect you to the parent network. Treat each fork as its own ecosystem with its own risks and its own history.
Key features
A fork of Chia
Python codebase
Public source code
Free to use
Supported coins
Flax's documentation mentions Chia, the project it was forked from. Beyond that reference, the repository is the best place to confirm which networks and features are currently part of the code, since documentation for a fork can change between releases.
How to install Flax on Windows
- 1
Find the official release
Open the Flax source repository at github.com/Flax-Network/flax-blockchain and go to the Releases page. Download only from the official website or the GitHub Releases page linked from the repository. Files from mirrors, forum posts or unfamiliar download sites are a common route for tampered software. The latest tagged release is labeled chia-1.6.1, so check its assets for a Windows installer or archive.
- 2
Confirm Windows support
The repository describes Windows builds, but support is listed as likely rather than confirmed. If the latest release includes no Windows file, the alternative is building from source, which requires developer tools and Python. A source build is a separate process with more steps, so treat it as a different path from a standard installation.
- 3
Verify the download
Compute the SHA-256 checksum of the file with the PowerShell command Get-FileHash -Algorithm SHA256, then compare the result with the value published on the release page. If the release provides a signature, verify that as well. Do not run a file whose hash does not match, and download it again from the source instead.
-
Run the installer
Double-click the verified file and follow the prompts. Choose an install folder on a drive with ample free space, because blockchain data grows over time. Accept the default settings unless you have a specific reason to change them, and keep a note of any custom paths you set.
How to use Flax
After installation, the routine is mostly about running and monitoring the node. Commands and menu names can change between releases, so follow the README in the repository for the exact syntax of your version. Start with a short session to confirm everything works before you leave a node running unattended.
- Open a terminal in the Flax install folder and run the help command to list the available options.
- Start the node and let the first sync complete before you rely on its data.
- Check the sync progress and peer count with the status command to confirm the node is connected.
- Read the log file when something fails, and note the timestamp and message before you change any settings.
- Stop the node cleanly before shutting down Windows, so the database is not left mid-write.
- Write down any custom settings you change, so you can roll back if a new release behaves differently.
If you plan to use the node with wallet functions, keep the wallet on your own machine and store its recovery phrase offline.
Pros & cons
- Free to use, with no listed price
- Open source, with full code available on GitHub
- Written in Python, which eases reading and modification
- Forked from Chia, so the design is familiar to Chia-family users
- Useful for learning how a blockchain node is built
- Last code update was in November 2022, more than two years ago
- Windows support is listed as likely rather than confirmed
- Signs of ongoing development are limited compared with active projects
- Few user-facing tools, so it suits people comfortable with the command line
- Fork ecosystems often receive fewer independent reviews than their parent projects
Is Flax safe?
Flax is open source and free, but its last code update dates to November 2022, more than two years ago. The software may therefore not receive fixes for newer issues. Review the repository's commit history and open issues before you commit to running a node, and always check the latest version on the official website.
Download only from the official website or the GitHub Releases page, and verify the SHA-256 checksum, or the signature if the release provides one, before running the file. Never enter a seed phrase, recovery phrase or private key on a third-party website, and never share one with someone who contacts you about the software. If a checksum does not match, delete the file and download it again from the source.
- Official source only. Download from github.com/Flax-Network/flax-blockchain. 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
Flax sits among node clients that share a Chia-inspired lineage, which sets it apart from general-purpose clients. Bitcoin Core and Geth are long-running projects built around their own networks, so their documentation and release history are far easier to follow. Flax is a narrower fork with a smaller development footprint.
HDDcoin Blockchain is also described as a Proof of Space and Time network, which places it in a similar family of designs. If you want to compare fork-based node software, it is a logical neighbor to check. Subspace Network Core and Aptos bring their own node and command-line setups with different tooling. Choose based on the network you actually want to join, the release activity you can verify, and how comfortable you are with command-line work.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- chia-1.6.1
- Last update
- 4 Nov 2022
- Windows support
- Likely (builds for Windows; check releases)
- Source code
- github.com/Flax-Network/flax-blockchain
Frequently asked questions
Flax can be installed with reasonable care. Use the project's GitHub Releases page, check the file's SHA-256 hash, and keep recovery phrases offline. Its last code update is from November 2022, so review the repository before trusting it with anything valuable.
Yes, Flax is listed as free and open source. There is no license fee for the software itself. Your real costs are the computer, storage, electricity and internet connection needed to run a node, so plan for those before starting a long sync.
Flax is a fork of Chia, which means it started from Chia's code and was changed into a separate project. Its codebase is written in Python. Treat it as an independent network rather than a tool for using Chia itself.
Flax lists Windows as a likely target, and the repository describes Windows builds. Whether a ready-made installer is included depends on the release, so check its assets first. If none is available, building from source is the alternative, but it requires more setup and tools.
Flax's most recent code update is dated November 2022, more than two years before this page was written. That makes ongoing fixes hard to count on. Look at open issues and commit history on GitHub to judge the project's current state before relying on it.
Flax reuses much of Chia's structure but runs as its own project with its own network rules. The two do not share a ledger, so software for one does not give you access to the other. Choose the node that matches the network you want to join.
Alternatives depend on the network you want to run. HDDcoin Blockchain is a close neighbor because it also draws on Proof of Space and Time consensus. Bitcoin Core and Geth serve different networks, so compare them by the chain you intend to use.
Verdict
Flax for Windows suits developers, students and hobbyists who want a free, open source Chia fork they can read and modify in Python. It is a poor fit for anyone who expects a polished app or steady updates. Given its last code update in November 2022, treat it as a study and testing tool rather than a production node, and compare it with actively maintained clients before relying on it for anything important.