Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase will not be similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of protection for your wallet that actually works alongside your seed phrase to encrypt and safeguard your wallet. A PIN, https://socialaffluent.com/story4550556/bip39-wallets-https-linktr-ee-bip39-a-review-of-bip39-generator