Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of stability in your wallet that works together with your seed phrase to encrypt and safeguard your wallet. A PIN, https://moodjhomedia.com/story2653037/bip-39-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic