Bip39 Checksum. You'll then do a primary recovery using a command similar to the a single under. (This command employs a sample wallet file bunlded with BTCRecover) What constitutes a "excellent wallet" is one that has obvious, simple to entry documentation on supported BIP standards, derivation paths, and Restoration processes. https://infopagex.com/story4145762/ian-coleman-bip39-https-linktr-ee-bip39-top-guidelines-of-bip39-passphrase