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Rawbit

Rawbit is a node-based visual editor for constructing and inspecting Bitcoin transactions, with a debugger for stepping through Bitcoin Script opcode by opcode.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Rawbit — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Rawbit to study, construct or inspect Bitcoin transaction flows and debug Script execution, especially when a visual representation and access to the underlying calculations are useful.

Who it is for

  • Educators explaining Bitcoin transaction structure
  • Auditors inspecting transaction flows and scripts
  • Developers exploring Bitcoin protocols at the byte and Script level

Documented uses

  • Assemble transaction components such as inputs, outputs, scripts, signatures and witnesses in a visual flow.
  • Inspect how changes affect preimages, signatures, transaction IDs, fees and weight.
  • Trace Script execution opcode by opcode and observe stack changes.
  • Load and adapt examples covering legacy transactions, SegWit, Taproot, MuSig2 and payment channels.
Before you choose

Requirements & limits

The project describes both an online version and local operation. Its README says the hosted version sends calculation data to a backend; local installation is the documented option for users who need calculations to remain on their machine.

  • The editor combines a node-based canvas with access to the Python function behind calculation nodes.
  • Built-in examples span multiple Bitcoin transaction eras and constructions.
  • Local setup requires Node.js, npm, Python, pip, a C compiler toolchain and libsecp256k1 headers.
  • The project is not a wallet, broadcaster or custody tool and cautions against handling real funds.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up Rawbit locally

Start the documented local frontend and backend for working with transaction flows.

Before you start

  • Node.js 18 or later and npm
  • Python 3.12 or later with pip
  • A C compiler toolchain and libsecp256k1 headers

Steps

  1. Clone the Rawbit repository and change into its directory.

  2. Install frontend dependencies with npm install, then start the Vite development server with npm run dev.

  3. In a second terminal, create and activate a Python virtual environment.

  4. Install requirements.txt and requirements-special.txt, then start the backend with python3 backend/routes.py.

  5. Open the local frontend at http://localhost:3041/.

Expected outcome

The local frontend connects to the documented backend at http://localhost:5007/ for calculations.

Guide limitations

  • The backend uses a forked python-bitcointx dependency pinned in requirements-special.txt.
  • Rawbit is educational software; the project advises using testnet or regtest rather than real funds.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
14 October 2026
Original website title
rawBit-io/rawbit · Official homepage title · retained in its source language
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