The good news is, in 2012 the developer Pieter Wuille developed the BIP32 specification at the base from the hierarchical deterministic wallets. Together with it, Pieter made a mathematical function to create a master critical from which to derive all other keys in the deterministic way. The use of BIP44 https://hubwebsites.com/story20347505/bip39-phrase-generator-can-be-fun-for-anyone