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2.8. Challenge checkers

Challenge caches published after April 21, 2015, must include a link to a Project-GC challenge checker. This requirement is ongoing for the life of the cache listing. Visit Project-GC’s FAQ to learn how challenge checkers work and how to create one.

Challenge checker requirements

Your challenge cache may be disabled or archived if the associated challenge checker does not work properly. Make sure that your checker and listing meet these requirements:

If you want to include a banner with a challenge checker, you must use an official Project-GC banner.

Example of a challenge checker

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