Bip39 Seed. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of security on your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://hylistings.com/story20698499/bip39-passphrase-https-linktr-ee-bip39-a-review-of-bip39-generator