Bip39 Tool. Now, at the following degree we use these getting and change critical bunch to crank out specific non-public keys. Use the above mentioned make non-public keys and chain code and pass them to the above described purpose kchild = kpar + hash(Kpar, cpar, i) to deliver personal keys. https://johsocial.com/story9443414/bip39-wallet-https-linktr-ee-bip39-bip39-words-an-overview