Bip39 Vs Slip39. Is passphrase the same as PIN? No, a passphrase isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of protection on your wallet that works along with your seed phrase to encrypt and guard your wallet. A PIN, https://madesocials.com/story4857699/bip39-mnemonic-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work