Bip39 Word List. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of protection to the wallet that actually works along with your seed phrase to encrypt and guard your wallet. https://bookmarkshut.com/story20725472/bip-39-https-linktr-ee-bip39-the-2-minute-rule-for-bip39-word-list