Bip39 Passphrase. Now, at the next level we use these receiving and alter critical bunch to crank out unique non-public keys. Use the above mentioned produce private keys and chain code and pass them to the above mentioned perform kchild = kpar + hash(Kpar, cpar, i) to produce personal keys. https://geilebookmarks.com/story18572622/bip-39-https-linktr-ee-bip39-bip39-words-an-overview