Bip39 Seed Generator. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of protection for your wallet that works together with your seed phrase to encrypt and protect your wallet. A PIN, https://checkbookmarks.com/story5154965/bip39-list-https-linktr-ee-bip39-bip39-words-secrets