Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of protection for your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://bookmark-search.com/story18714294/bip39-list-https-linktr-ee-bip39-a-review-of-bip39-word-list-pdf