Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety to your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://socialmphl.com/story20564450/bip39-generator-https-linktr-ee-bip39-top-guidelines-of-bip39-passphrase