Bip39 Seed Phrase. Is passphrase the same as PIN? No, a passphrase is not the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of stability on your wallet that actually works together with your seed phrase to encrypt and guard your wallet. https://socialbuzzmaster.com/story5221160/bip39-passphrase-https-linktr-ee-bip39-bip39-generator-an-overview