What Albert is saying; the keys aren’t ‘stored’ in some list on that website or any other website like it.
When a user clicks on a page, the website uses your cpu power to generate, the whole Bitcoin priv key to public address, at that time, on the fly.
Think about it, there isn’t enough memory/hard drive in the world to hold 2^256 keys, pub address, etc.
Using that site is pure brute forcing, page by page, which is eleventy million billion times slower than current programs.
i think your confuesed on what i mean yes 100% their store or their skipped please gop back and read what i said. if key #65 is in the puzzle on page 509472955201070048 theres no possible way that key was added to the list of private keys with there being a gap to fill meaning on page
509472955201070048 before puzzle #65 was found the order of private keys on the page went see how the ending numnber doesnt go in order by 0-9 a-f it skipped a key knowing that id copy and paste the before key and change the last character to its right key this being the number 67.
000000000000000000000000000000000000000000000001a838b13505b26864
000000000000000000000000000000000000000000000001a838b13505b26865
000000000000000000000000000000000000000000000001a838b13505b26866
000000000000000000000000000000000000000000000001a838b13505b26868
000000000000000000000000000000000000000000000001a838b13505b26869
this is what the list looks like when #65 puzzle was added there is no way possible that you could have put 65 on that page unless the key was missing.
000000000000000000000000000000000000000000000001a838b13505b26864
000000000000000000000000000000000000000000000001a838b13505b26865
000000000000000000000000000000000000000000000001a838b13505b26866
000000000000000000000000000000000000000000000001a838b13505b26867
000000000000000000000000000000000000000000000001a838b13505b26868
000000000000000000000000000000000000000000000001a838b13505b26869
knowing this info the main website and the one i found have in order from 0-9 a-f increasing in 1 bit when finishing its rotation on 0-9 a-f . there no nothing their litterly in order the ending number of the private key start at 0 going 1-2-3-4-5-6-7-8-9-a-b-c-d-e-f-0-1-2 ect on one of these pages there HAS TO BE a skip in the pattern if not id be able to hold "CTRL F' search the p2pkh address and find what page 66 private key is on. test it yourself go to all private keys and btc. hold CTRL AND F type in a found puzzles p2pkh and itll take you to it type in a non found puzzle and its not in the data of the website