Empire Market is fine and most popular Dark Network Marketplace at the time. Being this great has it's consequences constant Ddos attack causes prime Empire Market link to be down, and alternative URL as well. That means that empire marketplace need to create more and more URLs and tor mirror and links. And the thing is that there is not much ways users can get a legit Empire Marketplace mirrors.
That's why Empire Marketplace decided to create an official page where their users can always find active URLs and onion mirrors, for instant enter to Empire Market. Here it is http://empiremarket-url.com make sure to use whenever you want to enter to darknet market empire market.