Horizen zend is an open-source full node and core wallet for the Horizen (ZEN) network, aimed at users who want to run their own node rather than rely on a third-party server. It suits developers, node operators and technically minded holders who want direct access to the blockchain, its sidechain tools and a full set of RPC commands.
The repository is archived and no longer accepts vulnerability reports, and the latest tagged release is a release candidate, v6.0.0-rc1. Treat this software as a reference for understanding how the network works and check the official project channels before relying on it for anything important.
What Is a Full Node and Why Run One?
A full node downloads and checks every block and transaction against the network's consensus rules instead of trusting someone else's copy of the ledger. Running one means your own software decides which transactions are valid.
For Horizen, a full node also lets you query the chain directly and interact with sidechain features. Users who care about privacy and independence often prefer this over light wallets that depend on remote servers.
Who Is Horizen zend For?
This software is best suited to people who are comfortable with a command-line environment and want to understand how their node behaves. Typical users include:
- Developers building tools that read Horizen data through the RPC interface.
- Researchers studying zk-SNARK based sidechains.
- Node operators who want to contribute to the network's decentralization.
- Advanced holders who prefer to manage their own keys locally.
If you only want to send and receive coins with minimal setup, a lighter, GUI-based wallet is usually a better fit.
How zk-SNARKs Support Sidechains
A zk-SNARK is a compact proof that a statement is true without revealing the underlying data. In Horizen's design, these proofs let the mainchain verify that a sidechain certificate is valid.
This matters because sidechains otherwise need some form of trust in their operators. With proofs, a full node can check claims cryptographically, which is why the project describes its sidechains as trustless.
Practical Use Cases for Developers and Operators
Typical scenarios include running a node on a dedicated machine to serve blockchain data to internal tools, testing sidechain declarations on a test setup before launching anything real, and monitoring epoch and liveness status of a sidechain.
Operators should expect to read logs, keep the node synced and manage ports and firewall rules. These tasks are straightforward for experienced administrators but may be time consuming for beginners.
Key features
zk-SNARK based certificate validation
Trustless sidechains
Full RPC interface
Proof-of-Work consensus
Base58 address checking
Protection against 51% and replay attacks
Sidechain state provability
TLS end-to-end encryption
Extended sidechain RPC commands
Custom verification keys
Epoch management and liveness monitoring
Supported coins
The documentation references Horizen (ZEN) and Zcash (ZEC) as the coins and networks covered. The software is focused on the Horizen network and its sidechain framework.
How to install Horizen zend on Windows
- 1
Get the official file
Open the project's GitHub Releases page at the official repository, or follow the link from the official Horizen website. Download only from these sources.
- 2
Verify the download
Compare the file's SHA-256 checksum with the value published on the release page, or verify the signature if one is provided. Do not run files whose checksums do not match.
- 3
Install the program
Extract the archive to a folder you control, such as C:\Horizen, and run the included executables from there. Keep the data directory on a drive with enough free space for the blockchain.
- 4
Configure the node
Create or edit the configuration file so the node uses the RPC settings you need. Set a strong RPC username and password and restrict access to localhost unless you have a specific reason to expose it.
-
Let the node sync
Start the node and allow it to download and verify the blockchain. Initial synchronization can take many hours and depends on your connection and disk speed.
How to use Horizen zend
Once the node is running and synchronized, you interact with it mainly through its RPC interface. Commands are sent from a terminal or a script, and the node returns the requested data.
A typical first session looks like this:
- Confirm the node is synced by querying its block height and comparing it with a trusted explorer.
- Check the wallet balance and list your addresses using the built-in RPC commands.
- Test address validation with a Base58 address before sending any transaction.
- Use the sidechain commands only on a test network until you understand the declaration and certificate process.
- Back up your wallet file and keep it offline, then restart the node after any configuration change.
Pros & cons
- Open source, so the code can be reviewed by anyone
- Runs your own full node and validates blocks independently
- Rich RPC interface for automation and development
- Built-in Base58 address checking reduces typing errors
- zk-SNARK based design for trust-minimized sidechains
- The repository is archived and no longer accepts vulnerability reports
- Requires command-line comfort and manual configuration
- Initial blockchain synchronization takes considerable time and disk space
- The latest tagged release is a release candidate, not a stable release
- Not suited to users who want a simple graphical wallet
Is Horizen zend safe?
Download the software only from the official GitHub repository or the official Horizen website. Never download it from a third-party mirror, a link in a chat message or a search advertisement. After downloading, compare the SHA-256 checksum or verify the publisher's signature before running anything.
Because the repository is archived and vulnerability submissions are no longer accepted, the code may not receive security fixes. Keep this in mind before storing significant funds. Never enter a seed phrase or private key on a website, and do not share your wallet file. Antivirus software may flag node binaries as unfamiliar; investigate the warning rather than disabling your protection.
- Official source only. Download from github.com/HorizenOfficial/zen. 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
Compared with Komodo Core, Horizen zend focuses on zk-SNARK based sidechains and the Zcash-related privacy lineage, while Komodo emphasizes its own multi-chain framework. Litecoin Core and Dogecoin Core are more traditional Bitcoin-style full nodes without sidechain tooling, which makes them simpler to run but less suited to sidechain development.
If your goal is private transactions, Monero CLI and DERO HE are built around privacy from the ground up. Qtum Core offers smart contract support, a different emphasis from Horizen's sidechain model. Pick the node that matches the functions you actually need.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- v6.0.0-rc1
- Last update
- 26 Jun 2026
- Windows support
- Likely (builds for Windows; check releases)
- Source code
- github.com/HorizenOfficial/zen
Frequently asked questions
Yes, the software is open source and free to download. You only pay the normal network transaction costs when you send coins. Always obtain the program from the official repository to avoid counterfeit copies.
The project lists Windows among its supported platforms, along with macOS and Linux. Check the latest release notes to confirm the build you download includes a Windows binary.
The repository has been archived, and vulnerability submissions are no longer accepted. Review the official Horizen channels for current status before relying on the software for important tasks.
A full node stores and verifies the entire blockchain on your own computer. It checks every block against consensus rules, so you do not have to trust a remote server to tell you which transactions are valid.
Horizen uses zk-SNARK proofs to validate sidechain certificates. The mainchain can confirm that a sidechain's claims are correct without trusting its operators or downloading all of its data.
Blockchain data grows over time, so you should allocate substantial free disk space before starting a full node. Check the official documentation for current size estimates before you begin synchronization.
The node is controlled mainly through its RPC interface and command line. Graphical tools can connect to it, but you will need to set up the connection yourself using the RPC settings in your configuration.
Beginners can learn from it, but the setup involves configuration files, RPC security and blockchain synchronization. Starting on a test network and reading the documentation first is a sensible approach.
Verdict
Horizen zend suits developers, researchers and experienced node operators who want full control over a Horizen node and its sidechain tools. It rewards careful setup and technical understanding. Because the repository is archived and no longer accepts security reports, it is better treated as a reference implementation than as a long-term production wallet. Check the official project status before committing funds.