Luckily, in 2012 the developer Pieter Wuille created the BIP32 specification at The bottom on the hierarchical deterministic wallets. Alongside one another with it, Pieter produced a mathematical operate to make a master vital from which to derive all other keys in a deterministic way. This post points out BIP39, https://bookmarklinkz.com/story19079420/bip39-seed-phrase-mnemonics-generator-an-overview