Bip39 Seed Generator. Is passphrase similar to PIN? No, a passphrase is just not the same as a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of safety to your wallet that actually works along with your seed phrase to encrypt and guard your wallet. https://social-galaxy.com/story4261072/bip39-mnemonic-https-linktr-ee-bip39-an-unbiased-view-of-bip-39