Empire Market is late, original and expanding for the ceiling of dark web market on the tor.
It takes almoust all of it's central features from now Alphabay. And calling itself a replacement of it.
The validity of It's link can be confirmable by using the onion marketplace's own link-verifier webpage http://empiremarket-url.com/.
If URLs links out of work, here is the alternaive URL where you can find new tor market mirrors http://empiremarket-url.com/