Bip39 Passphrase. Now, at another level we use these obtaining and change critical bunch to generate specific private keys. Use the above deliver personal keys and chain code and go them to the above mentioned talked about functionality kchild = kpar + hash(Kpar, cpar, i) to create particular person keys. https://ragingbookmarks.com/story18666460/bip39-mnemonic-https-linktr-ee-bip39-bip-39-no-further-a-mystery