Bip39 Word List. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of stability in your wallet that actually works along with your seed phrase to encrypt and shield your wallet. https://get-social-now.com/story4905756/bip39-mnemonic-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work