Empire Market is late, new and expanding for the hights of dark web market on the onion.
It holds much all of it's fundamental features from now Alphabay. And calls itself a successor of it.
The legitimacy of It's onion mirrors can be verifiable by using the deep web market’s own link-verifier page http://empiremarket-url.com/.
If onion URL links out of work, here is the links where you can discover working onion market mirrors http://empiremarket-url.com/