Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety to the wallet that works together with your seed phrase to encrypt and defend your wallet. A PIN, However, https://siambookmark.com/story18950131/bip39-wallets-https-linktr-ee-bip39-not-known-factual-statements-about-bip39-list