Bip39 Passphrase. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of safety on your wallet that actually works together with your seed phrase to encrypt and secure your wallet. https://socialmediatotal.com/story4365861/bip39-list-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled