Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase is not really similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of stability to the wallet that works together with your seed phrase to encrypt and protect your wallet. A PIN, https://sociallweb.com/story4111565/bip39-passphrase-https-linktr-ee-bip39-a-review-of-bip39-generator