When the form get submit to Server, this script will send ‘g-recaptcha-response’ as a POST data. Every time our CAPTCHAs are solved, that human effort helps digitize text, annotate images, and build machine learning datasets. Sample Form with ReCAPTCHA. Now, execute the program to test the server-side validation. In the above JSON result object, "success: True" indicates that reCAPTCHA challenges validation success. reCAPTCHA v1 has been shut down since March 2018. Get the @$%K out