Bip39 Ian Coleman. Is passphrase the same as PIN? No, a passphrase is just not similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an extra layer of stability on your wallet that actually works along with your seed phrase to encrypt and defend your wallet. https://bookmarkfame.com/story19486742/bip39-words-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained