Bip39 Seed Phrase. Now, at another level we use these receiving and alter key bunch to deliver individual personal keys. Use the above produce private keys and chain code and pass them to the above described purpose kchild = kpar + hash(Kpar, cpar, i) to create personal keys. Just about https://bookmarksoflife.com/story4649916/bip39-wallet-https-linktr-ee-bip39-not-known-facts-about-bip39