Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase is just not similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of protection in your wallet that actually works together with your seed phrase to encrypt and secure your wallet. A https://socialevity.com/story21586855/bip39-wallets-https-linktr-ee-bip39-a-secret-weapon-for-bip39-mnemonic