Bip39 Passphrase Generator. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of safety to the wallet that actually works along with your seed phrase to encrypt and secure your wallet. https://socialtechnet.com/story4862707/bip39-https-linktr-ee-bip39-bip39-words-secrets