Empire Market is late, original and expanding for the ceiling of tor network marketplaces on the tor network.
It collects almoust all of it's majormain features from now Alphabay. And calling itself a successor of it.
The legitimacy of It's mirrors can be verifiable by using the deep web marketplace's own link-verifier website http://empiremarket-url.com/.
If URLs links are not working, here is the links where you can find alternative deep web market mirrors http://empiremarket-url.com/