Bip39 Seed. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of stability in your wallet that actually works along with your seed phrase to encrypt and protect your wallet. https://one-bookmark.com/story19542621/bip39-words-https-linktr-ee-bip39-getting-my-ian-coleman-bip39-to-work