Bip39 Npm. At first you'll want to retail outlet it SEPARATELY from the seed. Possessing your seed and also your passphrase in the same area defeats the objective of using a passphrase to begin with. BIP39 specifies a list of 2048 words from which the mnemonic phrase is decided on. https://webcastlist.com/story20166207/bip39-list-https-linktr-ee-bip39-top-guidelines-of-bip39-words