Bip39 Seed Phrase. Is passphrase the same as PIN? No, a passphrase is just not the same as a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of security to your wallet that actually works alongside your seed phrase to encrypt and shield your wallet. https://expressbookmark.com/story19166709/bip39-mnemonic-https-linktr-ee-bip39-a-review-of-bip39-word-list-pdf