Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of protection to the wallet that works along with your seed phrase to encrypt and shield your wallet. A PIN, https://bookmarklinkz.com/story19506002/bip-39-https-linktr-ee-bip39-a-review-of-bip39-generator