The good thing is, in 2012 the developer Pieter Wuille made the BIP32 specification at the base on the hierarchical deterministic wallets. Together with it, Pieter designed a mathematical function to create a master essential from which to derive all other keys in a deterministic way. BIP39 and 44, Then https://nimmansocial.com/story8695425/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-definition