Bip39 Word List Numbers. Is passphrase the same as PIN? No, a passphrase is just not similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of stability to the wallet that actually works alongside your seed phrase to encrypt and secure your wallet. https://getsocialnetwork.com/story4139197/bip39-passphrase-https-linktr-ee-bip39-a-review-of-bip39-generator