Bip39 Github. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of protection towards your wallet that actually works together with your seed phrase to encrypt and secure your wallet. https://bookmarkshome.com/story4285482/bip39-https-linktr-ee-bip39-bip-39-no-further-a-mystery