Update Chain Metadata in Polkadot Vault

How to update a chain's metadata in Polkadot Vault!

Due to the fact that your Polkadot Vault Device is always offline and is air-gapped, there is a unique system in which you must partake to update the chain metadata so that your transactions are valid. You can use the Novasama Technologies Metadata Portal to find QR codes which will provide your Polkadot Vault Device with the information required to update the chain metadata.

The following steps need to be carried out on your Polkadot Vault Device.

1. Navigate to the Novasama Technologies Metadata Portal. (Note: This should be done on a device which is not your Polkadot Vault Device.)

2. Select the appropriate blockchain that you wish to update the metadata for.

3. If you are adding/updating a chain for the first time, Select the Chain Specs tab at the top of the metadata portal screen.

4. Using your Polkadot Vault Device Select Scanner.

5. Scan the Chain Specs QR code with your Polkadot Vault Device.

6. Review the verifier certificate, and Select Approve.

7. Select the Metadata tab at the top of the metadata portal screen.

8. Using your Polkadot Vault Device Select Add Network Metadata on the screen that appeared after adding the chain specs, otherwise Select Scanner.

9. Scan the Metadata QR code with your Polkadot Vault Device. (Note: this can take a few minutes to complete.)

10. Review the verifier certificate and Select Approve.