Bip39 Mnemonic Code Converter Tool. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of protection for your wallet that works along with your seed phrase to encrypt and secure your wallet. https://getsocialsource.com/story4994025/bip39-list-https-linktr-ee-bip39-bip-39-no-further-a-mystery