The good news is, in 2012 the developer Pieter Wuille made the BIP32 specification at The bottom with the hierarchical deterministic wallets. Jointly with it, Pieter produced a mathematical function to create a master vital from which to derive all other keys inside a deterministic way. BIP39 and forty four, https://madbookmarks.com/story18841240/the-greatest-guide-to-seed-phrase-bip39