The good news is, in 2012 the developer Pieter Wuille made the BIP32 specification at the base from the hierarchical deterministic wallets. Alongside one another with it, Pieter produced a mathematical function to create a learn key from which to derive all other keys in the deterministic way. In the https://www.animenewsnetwork.com/bbs/phpBB2/profile.php?mode=viewprofile&u=1025088