Bip39 Mnemonic Code Converter Tool. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of protection towards your wallet that works along with your seed phrase to encrypt and safeguard your wallet. https://bookmarkbirth.com/story19528657/bip39-https-linktr-ee-bip39-bip39-words-fundamentals-explained