The good thing is, in 2012 the developer Pieter Wuille made the BIP32 specification at The bottom with the hierarchical deterministic wallets. Jointly with it, Pieter designed a mathematical functionality to create a master key from which to derive all other keys within a deterministic way. Mnemonic words examples are https://yesbookmarks.com/story19568775/considerations-to-know-about-bip39-seed-phrase-generator