Bip39 Dictionary. Is passphrase the same as PIN? No, a passphrase is not similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of stability to the wallet that actually works together with your seed phrase to encrypt and secure your wallet. A PIN, https://socialtechnet.com/story4382579/bip39-passphrase-https-linktr-ee-bip39-what-does-ian-coleman-bip39-mean