Bip39 Seed Phrase. Is passphrase the same as PIN? No, a passphrase just isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety on your wallet that actually works along with your seed phrase to encrypt and protect your wallet. https://bbsocialclub.com/story20637161/bip39-passphrase-https-linktr-ee-bip39-bip-39-no-further-a-mystery