Bip39 Dictionary. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of security on your wallet that actually works along with your seed phrase to encrypt and guard your wallet. https://bookmarkspy.com/story20045096/bip39-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained