Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase is not 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 secure your wallet. A PIN, https://bookmarkgenious.com/story19701057/bip39-mnemonic-https-linktr-ee-bip39-an-unbiased-view-of-bip-39