DMCA Policy

challenge respects copyright and will respond to valid infringement notices in accordance with the Digital Millennium Copyright Act (DMCA).

How to Submit a Takedown Notice

If you are a copyright owner or authorized agent and believe material on this site infringes your rights, please send a DMCA notice containing:

• Full URL(s) of the allegedly infringing page(s).
• Proof of ownership of the work (official link, registration, or statement of ownership).
• Valid contact information (name, email, and/or phone number).
• A good‑faith statement that the use is not authorized by the owner, its agent, or the law.
• A statement under penalty of perjury that the information provided is accurate and that you are the owner (or authorized to act for the owner).
• Your physical or electronic signature.

Please submit your notice via our Contact page. We will review and follow up within 3–5 business days.

Counter‑Notice

If you believe removed content does not infringe, you may submit a counter‑notice explaining your reasons. We will consider restoring the content in accordance with applicable procedures.

Last updated: Nov 03, 2026