Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase is not similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of security for your wallet that actually works alongside your seed phrase to encrypt and guard your wallet. A PIN, Then again, https://bookmarksoflife.com/story4324165/bip39-list-https-linktr-ee-bip39-a-review-of-bip39-words