Bip39 Words. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of protection for your wallet that works alongside your seed phrase to encrypt and guard your wallet. A PIN, Alternatively, is https://kingslists.com/story20353167/bip39-passphrase-https-linktr-ee-bip39-not-known-facts-about-bip39