Bip39 Checksum. What this suggests is when you established a passphrase if you configure your wallet, and then you put some copyright into your wallet - all is perfectly; the thing is your copyright! But then if you choose to install a 2nd wallet, making use of just your seed https://1-webdirectory.com/listings13020261/bip39-standalone-https-linktr-ee-bip39-bip39-mnemonic-generator-an-overview