Bip39 Vs Slip39. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of stability in your wallet that actually works alongside your seed phrase to encrypt and guard your wallet. https://bookmarkforce.com/story18743908/bip39-passphrase-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled