Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase is just not similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of safety for your wallet that actually works along with your seed phrase to encrypt and defend your wallet. https://gogogobookmarks.com/story18659863/bip39-passphrase-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting