Bip39 Vs Slip39. Is passphrase similar to 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 stability in your wallet that actually works together with your seed phrase to encrypt and guard your wallet. https://mylittlebookmark.com/story5159522/bip39-passphrase-https-linktr-ee-bip39-not-known-factual-statements-about-ian-coleman-bip39