The captcha will not load or will not accept anything Common

The captcha on BlackOps does two jobs. It filters automated traffic and it carries the market onion address inside the image, which is what lets you verify you are on the real site.

Blank or missing image

Usually a partial page load caused by a slow circuit. Reload the page fully, and if the image still does not appear, request a new circuit and try again. A different verified address often works immediately.

Rejects a correct answer

Normally a stale session. Reload so a fresh captcha is issued rather than resubmitting the old one, and check for case sensitivity before assuming it is broken.

If it never works on one address

Switch to another verified address. A captcha that consistently fails on one address while working on another points at load rather than at your browser.

Why the captcha carries the address

A captcha normally exists only to filter automated traffic. Here it does a second job, because the market address is printed inside the image itself. An attacker running a copy of the login page can serve you their own captcha, but they cannot make your browser show their address while the image shows the real one. That is the reason to read the image rather than only solve it.

It also explains why a captcha that consistently fails on one address and works on another is usually load rather than a fault. The image is generated by the service, so a service under pressure produces slow or partial images before it produces anything else.

What not to do

• Do not solve a captcha on a page whose printed address does not match your bar, even to see what happens
• Do not switch off images to make the page lighter, since the address is inside the image
• Do not resubmit the same expired captcha repeatedly, because a fresh page issues a fresh one