Bip39 Seed Phrase. Is passphrase the same as PIN? No, a passphrase is just not the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of protection on your wallet that works together with your seed phrase to encrypt and secure your wallet. https://dirstop.com/story21573772/bip39-wallet-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic