Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of security to your wallet that actually works together with your seed phrase to encrypt and guard your wallet. A https://bookmarkalexa.com/story4332502/bip39-passphrase-https-linktr-ee-bip39-the-best-side-of-bip39