Bip39 Wallet. Now, at another level we use these getting and change crucial bunch to crank out individual private keys. Use the above crank out non-public keys and chain code and pass them to the above mentioned mentioned functionality kchild = kpar + hash(Kpar, cpar, i) to make unique keys. https://checkbookmarks.com/story4731185/bip39-wallet-https-linktr-ee-bip39-how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-wallets