Bip39. You'd then do a fundamental recovery which has a command much like the one below. (This command takes advantage of a sample wallet file bunlded with BTCRecover) Mnemonics are illustration of entropy. First step includes generating a call concerning how much entropy you consider safe for your personal operations. https://redhotbookmarks.com/story19031648/bip39-words-https-linktr-ee-bip39-how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-generator