## Overview

Usage no npm install needed!

<script type="module">
  import ontDevOntologyTsSdkLedger from 'https://cdn.skypack.dev/@ont-dev/ontology-ts-sdk-ledger';


Ledger extension for Ontology blockchain TypeScript SDK


This is an extension of Ontology TypeScript SDK adding the support for managing private keys on Ledger Hardware wallet.


Required Tools and Dependencies

Developing and Running

Execute these commands in the project's root directory:


Install yarn

For faster building process and development experience install Yarn

npm install --global yarn


git clone 'https://github.com/OntologyCommunityDevelopers/ontology-ts-sdk-ledger.git'

Development build

This will build the extension with minimum polyfilling for better debug experience.

yarn build:dev

Production build

yarn build:prod

Ledger support

Because Chrome allows communication with the Ledger only from HTTPS loaded page (which chrome extension is not), there is a IFrame based transport implemented. This IFrame needs to be served on HTTPS. The source codes for the IFrame are at https://github.com/OntologyCommunityDevelopers/ledger-forwarder.git . To set the Iframe address make a call to

Ledger.setLedgerTransport(new Ledger.LedgerTransportIframe('https://drxwrxomfjdx5.cloudfront.net/forwarder.html', true));

To use your Ledger, you also needs Official Ontology Ledger App installed on your Ledger.

Built With



This project is licensed under the ISC License - see the LICENSE.md file for details


Many thanks to the whole Ontology team, who done a great job bringing Ontology to life.