1Why mirrors exist
Busy services spread visitors across several onion addresses to stay reachable when one is overloaded.
2How copies hide among them
Anyone can publish an address and call it a Tor Watch mirror. Nothing in the address itself proves it belongs to the service.
3How to check
Only trust a torwatch mirror that appears in a source you already trust, ideally with a date or signature.
4When unsure
Stick to the one checked tor watch link until a new mirror is confirmed.