Bip39 Github. At the start it is best to store it SEPARATELY from the seed. Getting your seed along with your passphrase in a similar spot defeats the purpose of using a passphrase to start with. By using a passphrase, you incorporate an additional layer of security to the wallet, https://socialrus.com/story20033601/bip39-words-https-linktr-ee-bip39-about-ian-coleman-bip39