Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an extra layer of safety in your wallet that actually works together with your seed phrase to encrypt and shield your wallet. A PIN, https://bookmarkgenious.com/story19630331/bip39-list-https-linktr-ee-bip39-a-review-of-bip39-word-list-pdf