Bip39 Checksum. Is passphrase the same as PIN? No, a passphrase just isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of protection on your wallet that works together with your seed phrase to encrypt and guard your wallet. A PIN, https://webookmarks.com/story4321736/bip39-word-list-https-linktr-ee-bip39-bip39-wallets-things-to-know-before-you-buy