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).

1. 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.

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

1. 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

1. From: your Ledger account → To: paste/choose recipient.

2. Amount: enter value.

1. Click Make Transfer → Sign and Submit → review on the Ledger → Approve.

2. Track status in the UI or your block explorer.

The transfer has now been successfully completed.