Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase is not similar to a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of safety for your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://highkeysocial.com/story4574692/bip39-wallets-https-linktr-ee-bip39-the-bip39-wallet-diaries