Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of stability in your wallet that works together with your seed phrase to encrypt and defend your wallet. A PIN, https://kingslists.com/story20372332/bip39-wallets-https-linktr-ee-bip39-not-known-details-about-bip39-list