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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              ### Interaction

<script src="https://cdn.cosmic.plus/ledger-wallet@1.x"></script>


  <input id="account" type="number" min="0" value="0" onchange="connect()">

  <input id="pubkey" type="text" disabled="true" placeholder="Waiting for Ledger wallet...">


### Description

This pen makes use of `@cosmic-plus/ledger-wallet` to retrieve the public keys of Ledger wallet accounts.

### Keypoints

* `ledgerWallet` can connect to one account at once.
* It is not required to disconnect before changing the account number. `ledgerWallet.connect(account)` handles that in the background.
* Ledger browser libraries are only compatible with Google Chrome or browser based on it (Opera, Chromium, Brave,...).
* `@cosmic-plus/ledger-wallet` also supports Node.js environments.

### Challenges

- `[easy]` Edit that pen to Display the public keys of the 3 first accounts of the connected Ledger wallet.
- `[hard]` List all existing accounts after the BIP 44 definition − that is, until you find a series of 20 empty ones.

_Give it a try by forking that pen & editing the code!_

### Documentation

- [@cosmic-plus/ledger-wallet documentation](https://cosmic.plus/#view:js-ledger-wallet)
- <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#address-gap-limit" target="_blank">BIP 44 gap limit proposal</a>

### Social

- [Discuss that pen on GalacticTalk](https://galactictalk.org/d/2080-pen-of-the-week-ledger-wallet-get-public-key)
              // $ npm install @cosmic-plus/ledger-wallet
// const ledgerWallet = require("@cosmic-plus/ledger-wallet")

const $ = document.querySelector.bind(document)

function connect () {
  $("#pubkey").value = null
  const account = $("#account").value

ledgerWallet.onConnect = function () {
  $("#pubkey").value = ledgerWallet.publicKey

ledgerWallet.onDisconnect = connect

$("#account").onchange = connect
$("body").onload = connect

🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.