Bip39 Ian Coleman. Now, at another level we use these getting and alter important bunch to crank out person non-public keys. Use the above mentioned produce personal keys and chain code and go them to the above mentioned purpose kchild = kpar + hash(Kpar, cpar, i) to generate person keys. https://bookmarkforce.com/story18845193/bip39-wallet-https-linktr-ee-bip39-bip39-words-an-overview