Bip39 Ian Coleman. Is passphrase the same as PIN? No, a passphrase just isn't the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of protection to your wallet that actually works along with your seed phrase to encrypt and guard your wallet. https://toplistar.com/story20841355/bip39-list-https-linktr-ee-bip39-an-unbiased-view-of-bip-39