Bip39 Passphrase. Now, at the following stage we use these acquiring and alter vital bunch to produce personal personal keys. Use the above mentioned create private keys and chain code and pass them to the above described function kchild = kpar + hash(Kpar, cpar, i) to crank out unique keys. https://opensocialfactory.com/story20894108/ian-coleman-bip39-https-linktr-ee-bip39-bip39-words-secrets