Bip39 Dictionary. Is passphrase the same as PIN? No, a passphrase is not similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of protection in your wallet that actually works together with your seed phrase to encrypt and guard your wallet. A PIN, https://bookmarklethq.com/story19040879/bip39-passphrase-https-linktr-ee-bip39-the-best-side-of-bip39-mnemonic