Bip39 Ian Coleman. Is passphrase similar to 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 security on your wallet that actually works together with your seed phrase to encrypt and secure your wallet. https://listbell.com/story8794928/bip39-word-list-pdf-https-linktr-ee-bip39-bip39-words-secrets