Bip39 Github. The passphrase is not really chosen with the predefined list of 2048 words – it may be any word or phrase you select. BIP39 is often a structure implementation that lays out how copyright wallets generate the set of words (or "mnemonic codes") which make up a mnemonic https://livebackpage.com/story4593929/bip39-mnemonic-https-linktr-ee-bip39-the-fact-about-bip39-wallets-that-no-one-is-suggesting