BX is a free, open-source command-line tool for Windows that lets you look up and work with Bitcoin blockchain data from a terminal. It is built for developers, system administrators and technically minded Bitcoin users who prefer scripting and plain text output to graphical dashboards. If you want to query the chain without opening a browser, this page explains what the program offers and how to get started.
The project is hosted on GitHub under the libbitcoin organization and distributed under the AGPL-3.0 license. Its latest release is v3.8.0, and the Windows version comes as a build or an installer. Because it runs from the command line, it suits people who are comfortable typing commands. Read the licensing and safety notes below before you install it.
What Is a Command-Line Blockchain Tool?
A block explorer is a tool that lets you look inside a blockchain. It shows blocks, which are batches of transactions added in sequence, along with the transactions themselves and the addresses they involve. Most people meet explorers as websites with search boxes and graphical pages.
A command-line tool does similar work from a terminal. Instead of clicking through pages, you type a command, receive text, and decide what to do next. That text can be saved to a file, compared with yesterday's output, or passed to another program.
Consider a small team that needs to confirm a payment reached a particular address. Checking by hand every morning is slow. A script that runs the same query and logs the result turns a repetitive check into a routine. This kind of repeatable workflow is why command-line tools remain popular with engineers.
Who Is BX for and What Problems Does It Solve?
BX fits people who work in a terminal for most of their day. Software developers testing Bitcoin-related code often need quick lookups without leaving the command line. System administrators who monitor servers may prefer text output that fits neatly into logs and alerts. Researchers and technically minded hobbyists can also use the tool to examine data directly.
Typical use cases include checking details while debugging, collecting figures for a spreadsheet or report, and building small scripts that run on a schedule. Each of these tasks benefits from predictable, text-based results rather than a page layout that changes over time.
The tool is less suited to people who want charts, dashboards or point-and-click navigation. Someone who only needs to view one transaction may find a web-based explorer faster. Matching the tool to the task is the main decision, and the rest of this page is designed to help you make it.
Understanding the AGPL-3.0 License in Plain Terms
BX is distributed under the GNU Affero General Public License version 3, usually shortened to AGPL-3.0. This is a copyleft license, which means people who receive modified versions must also receive the source code under the same terms. The Affero variant extends that obligation to software accessed over a network, which matters for anyone running a modified version as a service.
The project's own notes add a practical point. The code may be used inside a proprietary project, but changes to the core library must be published online. The source code for the library must always remain free for everybody to access.
Licensing questions can get complicated quickly, so treat this summary as orientation rather than legal advice. The full terms appear in the COPYING file in the repository. If you plan to build a commercial product around BX, read that file carefully and consider consulting a lawyer familiar with open-source licensing.
Key features
Free and open source
Windows availability
Command-line interface
Bitcoin-focused scope
Supported coins
The documentation mentions Bitcoin (BTC) as the network BX works with. Because the tool is focused on one blockchain, its use is best suited to Bitcoin-related lookups and scripts rather than work across many different networks.
How to install BX on Windows
- 1
Get the file from a trusted source
Download only from the official website or the GitHub Releases page for BX. Choose the Windows build or installer for the current release, v3.8.0, and avoid mirrors or repackaged copies from unknown sites.
- 2
Verify the download
Calculate the SHA-256 hash of the downloaded file using a standard Windows tool, then compare it with the checksum published alongside the release. If the values do not match, delete the file and download it again before going further.
- 3
Run the installer or place the build
If you chose the installer, run it and follow the on-screen prompts. If you chose the Windows build, move it into a folder you control and keep it there so you always know where the program lives.
-
Test it in a terminal
Open Command Prompt or PowerShell, navigate to the program's folder or add that folder to your PATH, and run a basic command from the documentation. A response confirms the installation works and gives you a baseline for later use.
How to use BX
Once installed, BX is used entirely from a terminal. The workflow is simple: open a shell, run a command from the documentation, read the output, and repeat. Keep a note of the commands you rely on so your results can be reproduced later.
- Open PowerShell or Command Prompt and move to the folder containing BX.
- Confirm you are running the expected release, v3.8.0, using the version or help option described in the documentation.
- Choose a Bitcoin (BTC) query from the documentation that matches a simple question you already know the answer to.
- Run the command and read the text output carefully before trusting it.
- Save the output to a file when you need a record, or pipe it into another tool for filtering.
- Test each command manually a few times before placing it inside an automated script.
Pros & cons
- Free to use, with no listed price
- Complete source code is public on GitHub for review
- Available as a Windows build or installer
- Text output suits scripting and automation
- Clear AGPL-3.0 license with a stated rule for the core library
- Current release v3.8.0 is available for download
- Command-line only, so there is no graphical dashboard
- Documentation mentions Bitcoin (BTC) as the only network
- Modified core-library code must be published under AGPL terms
- Requires comfort with terminals and typed commands
Is BX safe?
BX is a command-line tool rather than a wallet, but any program you run on Windows deserves care. Download only from the official website or the GitHub Releases page, then compare the file's SHA-256 checksum with the value published alongside the release. If the hash differs, do not run the file.
Some antivirus tools flag unfamiliar command-line binaries. When that happens, review the alert and verify the hash before deciding what to do. Never disable your protection entirely to get a program running. Avoid third-party sites that offer modified or 'cracked' copies, because repackaged files are the most common source of trouble.
- Official source only. Download from github.com/libbitcoin/libbitcoin-explorer. 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
BX is a Bitcoin-focused command-line tool, so it is best compared with other utilities that help you read blockchain data. Chainhook is a reorg-aware indexing engine for the Stacks and Bitcoin blockchains, which suits teams building indexed data pipelines rather than quick terminal lookups. Bitcoin Database Generator exports Bitcoin blockchain data into SQL Server, which fits reporting databases. Cshtop is a terminal visualizer for Cosmos blocks, so it serves a different ecosystem. Choose BX when you want a free, open-source Bitcoin command-line tool with a clear license and a Windows build or installer.
Specifications
- Price
- Free
- Type
- Open source
- License
- agpl-3.0
- Latest version
- v3.8.0
- Last update
- 30 Oct 2026
- Windows support
- Yes (Windows build or installer)
- Source code
- github.com/libbitcoin/libbitcoin-explorer
Frequently asked questions
Yes, BX is listed as free. It is open-source software released under the AGPL-3.0 license, and its source code is available on GitHub. Being free to download does not remove license obligations, so read the terms if you plan to modify or redistribute the program.
Yes. BX is available for Windows as a Windows build or an installer. Get the file from the project's GitHub Releases page, verify its SHA-256 checksum, and then follow the installation steps on this page to set it up and test it.
The documentation mentions Bitcoin (BTC) as the network BX works with. If you need to analyze other chains, look at the alternatives listed on this page, which are built for different networks and workflows.
Safety depends mostly on where you get the file. BX's source code is public, and it is a command-line tool rather than a wallet. Verify the SHA-256 checksum, check the download source, and review any antivirus alert carefully before deciding whether to run the program.
Basic terminal skills are enough to start, but programming knowledge helps when you automate tasks. Begin by running a few simple commands in Command Prompt or PowerShell and reading the output before you write any scripts that run on their own.
BX uses the AGPL-3.0 license. The project states that it may be used within a proprietary project, but the core library and any changes to it must be published online. Check the COPYING file in the repository for the complete terms.
Not exactly. BX runs in a terminal, while most block explorers are websites with graphical pages. Both belong to the same family of tools for reading blockchain data, so BX suits users who want text output and automation instead of visual navigation.
Verdict
BX suits people who are comfortable in a terminal and want a free, open-source way to work with Bitcoin data on Windows. Developers, system administrators and technically curious users will get the most from BX for Windows, especially when they plan to script repeated tasks. If you prefer point-and-click dashboards or need several blockchains, look at the alternatives first. Verify your download, read the AGPL-3.0 terms, and check the latest version on the official website before you begin.