Bip39 Compatible Wallet. Now, at another level we use these receiving and change critical bunch to generate individual private keys. Use the above make private keys and chain code and move them to the above pointed out purpose kchild = kpar + hash(Kpar, cpar, i) to produce specific keys. Just https://bookmarkmoz.com/story19535738/ian-coleman-bip39-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work