Bip39 Mnemonic. Now, at another level we use these receiving and change essential bunch to generate personal non-public keys. Use the above crank out personal keys and chain code and pass them to the above mentioned pointed out purpose kchild = kpar + hash(Kpar, cpar, i) to deliver individual keys. https://pukkabookmarks.com/story18992220/bip39-list-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work