Bip39 Seed. Is passphrase the same as PIN? No, a passphrase just isn't the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of security in your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. https://hyperbookmarks.com/story18749109/bip39-words-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained