Bip39 Word List Numbers. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of stability in your wallet that actually works alongside your seed phrase to encrypt and shield your wallet. https://icelisting.com/story20065471/bip39-passphrase-https-linktr-ee-bip39-the-best-side-of-bip39-mnemonic