> For the complete documentation index, see [llms.txt](https://docs.creditcoin.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.creditcoin.org/wallets/ledger-hardware-wallet/polkadot.js.org-substrate-portal.md).

# Polkadot.js.org Substrate Portal

After successfully completing the prerequisite setup phase, you can start using Polkadot.js.org Substrate Portal through Ledger

### Connect & Import <a href="#id-2.2-connect-and-import" id="id-2.2-connect-and-import"></a>

1. **Quit Ledger Live**.
2. **Plug Ledger** → **Unlock** → **Open the Polkadot app**
3. Navigate to the Polkadot.js In **Accounts** → click **From Ledger** (or **Import via Ledger**).

<figure><img src="/files/C1tdhmxtBROAuLPXw84q" alt=""><figcaption></figcaption></figure>

4. Upon clicking the **From Ledger** button, you will see the following screen

   In the modal, set:

   * **Account type** (top-level derivation; usually **0**)
   * **Address index** (child index; usually **0**)
   * **Name** your account → **Save**.

<figure><img src="/files/NG1ZatWS5Sqyw2b0XKmP" alt=""><figcaption></figcaption></figure>

5. Upon clicking the **Save** button, the Device Selector will appear. Select your Ledger device and press **the Connect button.**

<figure><img src="/files/K3K3DWWVJE2RxbfkXkq1" alt=""><figcaption></figcaption></figure>

6. Allow the connection on your Ledger Device.

> &#x20;**Notes on derivation:**
>
> * Ledger on Substrate = **ed25519** keys.
> * **Account type** groups (0..N). **The address index** enumerates addresses within that group.
> * The **address string changes by network** (SS58 format), but the underlying public key is the same.

### How to Transfer on Creditcoin network

1. **Unlock Ledger** → open the **Polkadot** app
2. In the portal, go to **Accounts → My accounts** → click the **paper-plane “Send”** icon next to your Ledger account

<figure><img src="/files/KDBm94NFevj9XY8y1yc4" alt=""><figcaption></figcaption></figure>

3. **From:** your Ledger account → **To:** paste/choose recipient.
4. **Amount:** enter value.

<figure><img src="/files/GZhqxFFV6g6d60Caourk" alt=""><figcaption></figcaption></figure>

5. Click **Make Transfer** → **Sign and Submit** → review on the Ledger → **Approve**.
6. Track status in the UI or your block explorer.

<figure><img src="/files/C5ZlzYOi0vv4MyNwuu44" alt=""><figcaption></figcaption></figure>

The transfer has now been successfully completed.