Bip39 Ian Coleman. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of safety on your wallet that works together with your seed phrase to encrypt and safeguard your wallet. https://thebookmarkking.com/story19038041/bip39-passphrase-https-linktr-ee-bip39-bip39-words-fundamentals-explained