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Merkle Proof Tool

Merkle Proof Tool is an open-source TypeScript command-line utility that checks whether a Merkle tree JSON file is intact and contains a specified leaf hash.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Merkle Proof Tool — 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 it when you have a Merkle tree JSON file and a leaf hash to check locally from a terminal.

Who it is for

  • Developers and operators who need to check a leaf against a Merkle tree.
  • Teams validating inclusion data used in proof-of-reserves or proof-of-liabilities workflows.

Documented uses

  • Check the integrity of a Merkle tree from a JSON file.
  • Verify whether a particular leaf hash is included in that tree.
  • Print the tree root and leaf as JSON for inspection using verbose mode.
Before you choose

Requirements & limits

The project is a public GitHub repository under the MIT license. Its documented workflow requires Node.js and npm.

  • The tool operates on a local tree JSON file and a supplied leaf hash.
  • It is a CLI rather than a hosted verification interface.
  • Verbose mode prints the root and leaf as JSON objects.
  • The README documents both npm-script and direct Node.js invocation.

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

Install and build the command-line verifier

Prepare the project locally by installing its dependencies and building the TypeScript files.

Before you start

  • Node.js
  • npm

Steps

  1. Clone the repository: git clone https://github.com/cakedefi/merkle-proof-tool.git

  2. Change into the project directory: cd merkle-proof-tool

  3. Install dependencies with npm install.

  4. Build the project with npm run build.

Expected outcome

The TypeScript files are transpiled into JavaScript in the ./build folder.

Documentation 1 ↗
Source-based practical guide

Check a leaf against a Merkle tree file

Use the verifier to check tree integrity and whether a supplied hash is included.

Before you start

  • Node.js and npm
  • A Merkle tree JSON file
  • The hash ID of the leaf to verify
  • The project dependencies installed and build completed

Steps

  1. Run npm run verify -- --tree= --hash= --verbose.

  2. Review the verifier's result; with --verbose, the tree root and leaf are printed as JSON objects.

Expected outcome

The utility checks the tree and the specified leaf; verbose mode includes the root and leaf JSON in console output.

Guide limitations

  • The tree file path and leaf hash are mandatory parameters.
  • The README documents npm invocation; when using the Node.js runtime directly, it gives node build/verify.js --tree= --hash= --verbose and notes that the extra -- separator is not used.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
16 October 2026
Original website title
cakedefi/merkle-proof-tool · Official homepage title · retained in its source language
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