The good news is, in 2012 the developer Pieter Wuille developed the BIP32 specification at The bottom on the hierarchical deterministic wallets. With each other with it, Pieter made a mathematical functionality to produce a master important from which to derive all other keys within a deterministic way. bip39-phrase.com is https://binksites.com/story8520001/the-basic-principles-of-bip39-passphrase-generator