Bip39 Word List Numbers. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, 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 safeguard your wallet. https://bookmarkmargin.com/story19121462/bip39-word-list-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic