Bip39 Github. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of safety to the wallet that works together with your seed phrase to encrypt and protect your wallet. A PIN, Alternatively, https://moodjhomedia.com/story2604891/bip39-https-linktr-ee-bip39-a-review-of-bip39-generator