Bip39 Npm. At first you must retail store it Independently out of your seed. Getting your seed and also your passphrase in a similar site defeats the goal of using a passphrase to start with. BIP39 specifies a list of 2048 words from which the mnemonic phrase is picked out. https://social-lyft.com/story8947585/bip39-list-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work