Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of protection to your wallet that works along with your seed phrase to encrypt and secure your wallet. A PIN, on https://socialrator.com/story9725228/bip39-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39