Bip39 Mnemonic Code Converter Tool. Is passphrase similar to PIN? No, a passphrase isn't the same as a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of protection on your wallet that actually works together with your seed phrase to encrypt and defend your wallet. https://bookmarkplaces.com/story19111618/bip39-passphrase-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39