My thinking was to create a lot of private keys from hex and save them to files then you only need to search with some programm all the files to find the BTC Adress inside this file and next to the adress is written the wif key to access the BTC Adress.

First i have try to crawl the website privatekeys.pw but they block crowling then i found a script like privatekeys.pw but it also wasnt possible to save this websites because of ajax that must load first then i have installed it on my own server but also no way because of ajax. Last i wanted to use iMacros to let klick him the website and download it and go to next website but there are to mutch data.

i know to scan the full hex codes it is impossible maybe it is impossible one time. google has created in cooperation with nasa a quantum computer maybe they can do this.

i also have breaked my head to look as a way to get the solution to the puzzle all i have found out is that the numbers 1 3 7 and Maybe letter F has any important meaning. i also found the numbers 2 4 8 1 but that cames from the number 2^30 2^31 and something:

2^1 = 2
2^2 = 4
2^3 = 8
2^4 = 16

2^31 = 2147483648
2^32 = 4294967296
2^33 = 8589934592
2^34 = 17179869184

also if you compare the 2^1 numbers with the solution you will find out that is every time an -1 counting

2^1 = 2  = 0000000000000000000000000000000000000000000000000000000000000001
2^2 = 4 = 0000000000000000000000000000000000000000000000000000000000000003
2^3 = 8 = 0000000000000000000000000000000000000000000000000000000000000007
2^4 = 16 = 0000000000000000000000000000000000000000000000000000000000000008 wrong but F (maybe Fail)
2^5 = 32 = 0000000000000000000000000000000000000000000000000000000000000015 here is the 16 from 2^4 -1
2^6 = 64 = 0000000000000000000000000000000000000000000000000000000000000031 here is the 32 from 2^6 -1
2^7 = 128 = 000000000000000000000000000000000000000000000000000000000000004c
2^7 = 128 = 0000000000000000000000000000000000000000000000000000000000000076 (in decimal) if you show in the last keys you have the 1 3 and here in decimal ist the 7

like you see we found the 1 3 7 and here again in the description with hex:

1...1
2...3
4...7
8...f
10...1f

maybe someone see something i dont see but i dont think that the created of the puzzle wanted to scan every hex to find the solution.