Bip39 Ian Coleman. You'd probably then do a simple Restoration by using a command such as the one down below. (This command works by using a sample wallet file bunlded with BTCRecover) Any person else who discovers the phrase can steal the bitcoins. It have to be stored top secret, https://onlybookmarkings.com/story18591450/bip39-passphrase-https-linktr-ee-bip39-the-best-side-of-bip39-mnemonic