Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of stability to your wallet that actually works alongside your seed phrase to encrypt and secure your wallet. A PIN, https://bookmarkpath.com/story18637548/bip39-wallets-https-linktr-ee-bip39-5-essential-elements-for-bip-39