Very nice this will help us not scanning these already scanned ranges again 

great work

Can you tell me the way to achieve that?

When I refer to a range I am being specific to the way I have configured the pool.  A single range in this case is 2^36 or 000000000 - FFFFFFFFF or 68,719,476,736 Keys.

I tried to select a range size that would not complete too quickly on new hardware and still be acceptable to run on slower hardware.

With the range set at this size that splits the entire 64 bit challenge into 2^27 ranges or 134,217,728.  So that is the size of the DB containing every range in either a checked or unchecked form.  The more people we have helping the quicker they get checked.

The pool is now running ~6.25 billion keys a second and has around 80 users.  Only about 10 are active currently though.  I was kind of hoping someone would unleash a garage full of 8 gpu mining rigs on it at some point but that has not happened yet to my knowledge.

I more then likely will not worry about it because when a challenge it too difficult I tend to focus my efforts on something more achievable.

it also could be FF

I have a Ubuntu version on the user stats page.  I have tested it with Ubuntu 14.04.2 LTS and Ubuntu 18.04.3 LTS

extract zip to folder of your choice.  edit settings.ini to reflect your username and bitcrack settings

chmod 755 ttdclient

a copy of bit crack needs to be in the same folder

The client expects to find either clbitcrack or cubitcrack

then run
./ttdclient

Let me know if you have any questions

http://www.ttdsales.com/64bit/

Only submitted ranges are unavailable

A requested range that was never submitted is still just as available as an unrequested range.

Mods maybe understand
after my these research there were no more improvments in security

There are many research tools, all are about Brute Force, scanning etc, but they must understand  every calc required those tools, like in my calc, also people could use kangroo scripts for scanning in bit range, which one is last in tools creating series, for pubkey search, next kangroo gpu ver soon coming, and make the puzzle finder more closer,
currently some people created groupwise scanning by bitcrack for 64 puzzle
and my research related to kangroo scanning + my exact calc

anyway we can't comment on MODs decisions

check if they dont have objection then let me Proof Exact

and i will not reveal exact formula's and will not participate in puzzle 110

-----------\
Proof of Exact 110 puzzle lead by 100 bit

only full member or most senior memebers can test my Proof

you will Generate key pair inside 110 bit range
you will post only pubkey from 110
i will post 2048 pubkeys inside 100 bit range
you will post prvkey
i will post 1 pubkey which one will exist in 100 bit (2048) corresponding to 110 bit range pubkey
simple 4 post you will understand "Exact"
it will save time of search in future for puzzle solver