Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase just isn't similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of safety for your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://listbell.com/story8477336/bip39-mnemonic-https-linktr-ee-bip39-an-unbiased-view-of-bip-39