Hashcoin was removed on 2014/08/12 because it was delisted from its only exchange.

How to CPU mine X11 algorithm coins.

Technical Information
Release Date: 04/08/2014
Algorithm: X11
Total supply: 44,000,000
Premine: 0
Block Time: 1 minute
Block Reward: 2222222/(((Difficulty+2600)/9)^2)
Difficulty Retarget: 1 minute using Dark Gravity Wave 2

External Information

Announcement Thread
Old Announcement Thread
Forum
Reddit

Source

GPU Advantage Calcs
AMD FX-8320 using Elmad’s CPU-Miner v(1.3) = 458kh/s
R9 280x (average from here) = 4.2mh/s
Advantage = 9.2