Bip39 Dictionary. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of safety on your wallet that actually works together with your seed phrase to encrypt and secure your wallet. A PIN, https://sociallawy.com/story10019508/bip39-passphrase-https-linktr-ee-bip39-bip39-wallets-things-to-know-before-you-buy