The good news is, in 2012 the developer Pieter Wuille produced the BIP32 specification at The bottom of the hierarchical deterministic wallets. Alongside one another with it, Pieter developed a mathematical functionality to create a grasp key from which to derive all other keys inside a deterministic way. Mnemonic words https://socialtechnet.com/story4370970/bip39-seed-phrase-mnemonics-generator-an-overview