Empire Market is late, original and developing for the ceiling of tor network markets on the tor.
It takes practically all of it's fundamental features from now Alphabay. And calling itself a beneficiary of it.
The legitimacy of It's links can be confirmable by using the onion market’s own link-verifier page http://empiremarket-url.com/.
If onion mirrors links are not working, here is the onion links where you can discover alternative tor market mirrors http://empiremarket-url.com/