Fortuitously, in 2012 the developer Pieter Wuille created the BIP32 specification at The bottom on the hierarchical deterministic wallets. With each other with it, Pieter produced a mathematical functionality to produce a learn critical from which to derive all other keys in a very deterministic way. The usage of BIP44 https://bookmarkssocial.com/story19085738/ledger-seed-phrase-bip39-no-further-a-mystery