Bip39. Now, at the following level we use these receiving and alter essential bunch to produce unique personal keys. Use the above crank out non-public keys and chain code and go them to the above pointed out function kchild = kpar + hash(Kpar, cpar, i) to crank out unique keys. https://userbookmark.com/story19534910/bip39-wallet-https-linktr-ee-bip39-bip39-words-secrets