Bip39 Mnemonic. You'd probably then do a fundamental recovery having a command just like the one down below. (This command makes use of a sample wallet file bunlded with BTCRecover) And you need to have written it down if you ended up hoping to maintain a choice open up to https://thejillist.com/story9314153/bip39-list-https-linktr-ee-bip39-the-bip39-wallet-diaries