Bip39 Npm. The passphrase just isn't picked from your predefined list of 2048 words – it can be any word or phrase you choose. BIP39 is a structure implementation that lays out how copyright wallets produce the set of words (or "mnemonic codes") that make up a mnemonic sentence, And https://bouchesocial.com/story21154485/bip39-passphrase-https-linktr-ee-bip39-bip-39-no-further-a-mystery