Bip39 Mnemonic. Is passphrase the same as PIN? No, a passphrase just isn't similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of safety for your wallet that actually works alongside your seed phrase to encrypt and secure your wallet. A PIN, on https://socialbuzzfeed.com/story4240213/bip39-word-list-pdf-https-linktr-ee-bip39-top-guidelines-of-bip39-words