Bip39. The passphrase is not picked from your predefined list of 2048 words – it could be any word or phrase you choose. BIP39 is actually a style implementation that lays out how copyright wallets create the list of words (or "mnemonic codes") that make up a mnemonic sentence, and https://bookmark-master.com/story18671079/bip39-words-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work