Bip39 Mnemonic. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of safety to the wallet that actually works along with your seed phrase to encrypt and protect your wallet. A PIN, https://social-galaxy.com/story4366411/bip-39-https-linktr-ee-bip39-not-known-factual-statements-about-ian-coleman-bip39