Bip39. Now, at another level we use these acquiring and change key bunch to deliver individual personal keys. Use the above mentioned crank out private keys and chain code and pass them to the above mentioned mentioned perform kchild = kpar + hash(Kpar, cpar, i) to create personal keys. Just https://wearethelist.com/story20734420/bip39-passphrase-https-linktr-ee-bip39-bip-39-no-further-a-mystery