Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase just isn't similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an extra layer of protection in your wallet that works together with your seed phrase to encrypt and guard your wallet. A PIN, on https://ok-social.com/story4135119/bip39-mnemonic-https-linktr-ee-bip39-bip39-wallets-things-to-know-before-you-buy