Bip39 Word List Numbers. Is passphrase similar to PIN? No, a passphrase is not the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of protection towards your wallet that actually works together with your seed phrase to encrypt and defend your wallet. https://bookmarkshq.com/story20371511/bip39-mnemonic-https-linktr-ee-bip39-the-fact-about-bip39-wallets-that-no-one-is-suggesting