Bip39 Seed. Now, at the following amount we use these getting and alter vital bunch to make individual non-public keys. Use the above create non-public keys and chain code and pass them to the above mentioned talked about purpose kchild = kpar + hash(Kpar, cpar, i) to create unique keys. https://bookmarknap.com/story9171543/bip39-generator-https-linktr-ee-bip39-a-review-of-bip39-generator