Bip39 Seed Generator. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of protection for your wallet that actually works alongside your seed phrase to encrypt and guard your wallet. A https://bookmark-media.com/story19001425/bip39-mnemonic-https-linktr-ee-bip39-bip39-generator-an-overview