Official URL
The official Crown Market URL
No single onion reigns forever. Crown keeps a rotating set of mirrors, and the present set is always held on this register.
People search for the one Crown URL that never changes. A market under steady denial-of-service pressure cannot work that way. Crown publishes a small set of mirrors and rotates them as relays come under load. The present set resides on the Crown profile page.
The sound habit: bookmark this clearnet register, not an onion. When you wish to reach Crown, open the register, copy the Primary mirror, and paste it into Tor Browser. You always arrive at a live address and never retype a fifty-six character string. For the shape of the mirror arrangement, read the mirror register page.