The good thing is, in 2012 the developer Pieter Wuille produced the BIP32 specification at The bottom with the hierarchical deterministic wallets. Together with it, Pieter created a mathematical functionality to create a master key from which to derive all other keys in the deterministic way. A seed phrase, also https://getsocialnetwork.com/story4514579/the-greatest-guide-to-seed-phrase-bip39