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

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).

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.

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

6. Allow the connection on your Ledger Device.

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

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

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

The transfer has now been successfully completed.