Bip39 Checksum. You would then do a primary recovery with a command such as the 1 down below. (This command employs a sample wallet file bunlded with BTCRecover) For those who were being to expose your seed phrase less than duress, your concealed wallets would remain secure and not known. https://bookmarkleader.com/story18677487/bip39-list-https-linktr-ee-bip39-not-known-details-about-bip39-wallets