Bip39 Standard. Now, at another level we use these receiving and alter key bunch to generate person non-public keys. Use the above mentioned crank out personal keys and chain code and move them to the above described functionality kchild = kpar + hash(Kpar, cpar, i) to make person keys. Just https://reallivesocial.com/story5160920/bip39-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work