Bip39 Vs Slip39. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of security on your wallet that works along with your seed phrase to encrypt and protect your wallet. https://express-page.com/story4100047/bip39-passphrase-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work