Empire Market is late, original and reaching for the peak of dark web marketplaces on the onion network.
It has essentially all of it's central features from now Alphabay. And claims itself a replacement of it.
The reliability of It's links can be verified by using the tor marketplace's own link-verifier website http://empiremarket-url.com/.
If URL links are not working, here is the onion URLs where you can discover active dark web market mirrors http://empiremarket-url.com/