I have to inform you about recent website I found not so long ago. It's name Nightmare onion market tor address!
Darknet Market Nightmare is extremely famous at the moment, all those massive markets they are frightens by a new player.
They're spreading that fabricated mess about Nightmare, like Nightmare hacked / fraud and whatever. These rumor is just dirty tricks.
It's organized by official Nightmare market's stuff. It helps you access Nightmare if Nightmare Marketplace is out of work!
This page stores the list of all alternative tor address that is working.