Bip39-Standalone. The passphrase is just not selected with the predefined list of 2048 words – it might be any word or phrase you end up picking. By using a passphrase, you increase an additional layer of protection in your wallet, protecting your money even if your seed phrase is compromised. https://bookmark-template.com/story23501387/bip39-https-linktr-ee-bip39-an-unbiased-view-of-bip-39