Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase is not similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of security for your wallet that actually works alongside your seed phrase to encrypt and defend your wallet. A PIN, However, https://infopagex.com/story4833221/bip39-mnemonic-https-linktr-ee-bip39-the-2-minute-rule-for-bip39-word-list