I have a ledger Nano S and would like to know how to extract the public master key of its wallet, in order to do HD key derivation in an external process.
Is there a way or is this info never exposed in any way?
Find the HD Public key for your wallets:
You can test the address by going to:
https://blockchain.info/xpub/123XYZ where 123XYZ
is your public key. You should see your transactions and balance.
Credit: https://keepingstock.net/storing-your-cryptocoins-in-a-bank-with-a-ledger-wallet-52d7895b9dd