Bip39 Seed. Now, at another amount we use these receiving and change critical bunch to crank out individual private keys. Use the above crank out non-public keys and chain code and move them to the above mentioned stated operate kchild = kpar + hash(Kpar, cpar, i) to deliver unique keys. https://social-medialink.com/story4181717/bip39-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work