Fortuitously, in 2012 the developer Pieter Wuille designed the BIP32 specification at The bottom of the hierarchical deterministic wallets. Alongside one another with it, Pieter designed a mathematical function to create a master vital from which to derive all other keys in a very deterministic way. BIP39 and 44, Conversely, https://bookmarknap.com/story9860956/bip39-seed-phrase-fundamentals-explained