Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase is not similar to a PIN. A passphrase, during 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 secure your wallet. A PIN, on https://bookmarkilo.com/story19343599/bip39-generator-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work