Bip39 Npm. Is passphrase the same as PIN? No, a passphrase is just not the same as a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of security to your wallet that actually works along with your seed phrase to encrypt and secure your wallet. https://bookmarkedblog.com/story20146794/bip39-https-linktr-ee-bip39-top-guidelines-of-bip39-mnemonic