Bip39 Online. Is passphrase the same as PIN? No, a passphrase is not really similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of security towards your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. https://bookmarkingfeed.com/story19048570/bip39-list-https-linktr-ee-bip39-a-review-of-bip39-generator