Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of security on your wallet that works alongside your seed phrase to encrypt and secure your wallet. A PIN, On https://sparxsocial.com/story9074333/bip39-https-linktr-ee-bip39-not-known-factual-statements-about-bip39-list