Bip39 Seed. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of security for your wallet that works along with your seed phrase to encrypt and guard your wallet. A PIN, https://bookmarkcork.com/story20274178/bip39-passphrase-https-linktr-ee-bip39-bip-39-no-further-a-mystery