Bip39 Seed Phrase. Is passphrase the same as PIN? No, a passphrase will not be the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of stability in your wallet that works together with your seed phrase to encrypt and safeguard your wallet. https://bookmarklethq.com/story18818005/bip39-passphrase-https-linktr-ee-bip39-top-guidelines-of-bip39-words