Bip39 Seed. Is passphrase the same as PIN? No, a passphrase is just not similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety towards your wallet that actually works along with your seed phrase to encrypt and protect your wallet. https://mixbookmark.com/story5077489/bip39-word-list-pdf-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained