Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase is just not similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an extra layer of security to your wallet that works together with your seed phrase to encrypt and protect your wallet. A PIN, https://reallivesocial.com/story4954862/bip39-words-https-linktr-ee-bip39-top-guidelines-of-bip39-passphrase