Bip39 Dictionary. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, in 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 protect your wallet. https://bookmarklogin.com/story18768725/bip39-mnemonic-https-linktr-ee-bip39-a-review-of-bip39-generator