Chain Code from Ledger Nano S The question is basically in the title. Can I (or it is possible to) extract the chain code from a ledger nano s device? It doesn't have to be the Master Chain Code. Any of them will do.
Yes. You can get the public key, chaincode, and address for any derivation path.

If you use the btchip-python library, you can use the getWalletPublicKey() method to retrieve a dictionary containing all three of those things.