Hi I have been interested in the puzzle for several months and after months of scanning and learning I found a site that seems to have scanned all the range' in #64 puzzle's keyspace (from 2^63 till 2^64-1 decimal, 0x8000 0000 0000 0000 - 0xFFFF FFFF FFFF FFFF) and he find nothing.
https://hashkeys.club/64/.
How is possible? Sorry for google translate.
Can someone explain to me!
As I told before, this puzzle is not true. don't waste your time and money..
there is someone that wants us to be buzzy with something that doesn't exist.
that is my conclusion.

The puzzle is not true EVEN though people have found keys within the puzzle?! Every key from 1 to 63 bits has been found and every key that is a multiple of 5 has been found, up to 115 bits...but yeah, it's not true.
Where do you people come from and/or where do you get your information from that helps you draw conclusions?!
Sorry for disappointing you. I can understand your reaction and angry.. I said that is my conclusion. I may be right, or wrong..but do you what.. just continue searching this wrong private key. and you will regrit one day.
this is only 16 keys. if you run your normal computer without any Gpu for one week searching random 16 keys, you supposed to find this damn pk..
i told you bro. there is something wrong with this pk.