Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of protection to your wallet that actually works along with your seed phrase to encrypt and defend your wallet. A PIN, Then https://bookmarkspiral.com/story18954887/bip39-words-https-linktr-ee-bip39-top-guidelines-of-bip39-words