DMCA & Copyright Policy

We respect copyright and respond to valid notices under the Digital Millennium Copyright Act (17 U.S.C. § 512). Most content here is either original, derived from US government works in the public domain, or licensed — see our Data Sources page. If we have got something wrong, we will fix it.

Send your notice through our contact form, selecting “General enquiry” and beginning your message with DMCA NOTICE. To be effective, your notice must include:

• A physical or electronic signature of the copyright owner or a person authorised to act on their behalf.
• Identification of the copyrighted work you claim has been infringed.
• The exact URL on this website where the material appears, precise enough for us to locate it.
• Your name, address, telephone number, and email address.
• A statement that you have a good-faith belief the use is not authorised by the copyright owner, its agent, or the law.
• A statement, under penalty of perjury, that the information in your notice is accurate and that you are the copyright owner or authorised to act on their behalf.

On receiving a compliant notice we will remove or disable access to the material promptly and make a reasonable effort to notify whoever supplied it. We maintain a policy of terminating, in appropriate circumstances, contributors who are repeat infringers.

If you believe material was removed by mistake or misidentification, you may send a counter-notice through the same channel. It must include your signature, identification of the removed material and where it appeared, a statement under penalty of perjury that you have a good-faith belief it was removed by mistake or misidentification, and your name, address, and telephone number, together with consent to the jurisdiction of the federal district court for your district.

Under 17 U.S.C. § 512(f), knowingly misrepresenting that material is infringing — or that it was removed by mistake — can make you liable for damages, including costs and legal fees. Please be sure before you file.