Empire Market is famous and most notorious Deep Web Marketplace at the time. Being this big has it's consequences regular Ddos attacks causes main Empire Market URL to be down, and alternative mirror as well. That means that empire marketplace had to design more and more URL and onion mirrors and links. And the thing is that there is not much ways users can discover a right Empire Market URl.
That's why Empire Marketplace decided to create an original webpage where their users can always find legit URLs and onion mirrors, for quick enter to Empire Market. Here it is http://empiremarket.site/ be sure you using whenever you want to enter to darknet market empire market.

You can to login at several Dark Web marketplaces only with an links, what determines the following : inpending clients and vendors don’t have a possibility enroll until they will obtain an URLs from an previously enrolled vendor or buyer.
Those can be found at https://darkwebonion.com/, it stores updated link to all of the Deep Web marketplaces. You ought to follow these urls to register on the sites.
In case that there are some troubles with an access (links don't work), you may lie in wait and check for Deep Web markets alternative link. Carry on, as long as few marketplaces close and open signing up periodically, due to server load.

Спасибо за инфу