Bip39 Checksum. You would probably then do a standard recovery having a command such as the 1 below. (This command takes advantage of a sample wallet file bunlded with BTCRecover) Entropy is a sophisticated feature. Your mnemonic may very well be insecure if this feature is applied incorrectly. Read far https://mysitesname.com/story9383737/bip39-generator-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled