Bip39 Ian Coleman. Is passphrase the same as PIN? No, a passphrase will not be similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an extra layer of protection for your wallet that actually works along with your seed phrase to encrypt and defend your wallet. https://bookmarksknot.com/story20555937/bip39-passphrase-https-linktr-ee-bip39-the-fact-about-bip-39-that-no-one-is-suggesting