Bip39 Ian Coleman. Is passphrase the same as PIN? No, a passphrase is not really similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of safety for your wallet that actually works together with your seed phrase to encrypt and safeguard your wallet. https://bookmarketmaven.com/story19259923/bip-39-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work