Bip39 Standard. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of safety to your wallet that works alongside your seed phrase to encrypt and defend your wallet. A PIN, Then https://ledbookmark.com/story5192598/bip39-https-linktr-ee-bip39-bip39-words-fundamentals-explained