Bip39 Standard. Now, at the next stage we use these getting and alter essential bunch to create individual private keys. Use the above create private keys and chain code and pass them to the above mentioned described function kchild = kpar + hash(Kpar, cpar, i) to deliver individual keys. Just https://social40.com/story4219066/bip-39-https-linktr-ee-bip39-bip39-words-secrets