Bip39 Passphrase. The passphrase is just not picked in the predefined list of 2048 words – it can be any word or phrase you decide on. BIP39 is a style and design implementation that lays out how copyright wallets produce the set of words (or "mnemonic codes") that make up https://funny-lists.com/story19866780/bip39-mnemonic-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting