Bip39 Passphrase. 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 your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. A PIN, However, https://get-social-now.com/story4098328/bip39-mnemonic-https-linktr-ee-bip39-not-known-factual-statements-about-ian-coleman-bip39