Follow Those Methods For Get reCAPTCHA Verification For your Website.
reCaptcha Plugin For Blogger
1. Sign Up/Login To Your Google Account.
2. GoTo This URL http://goo.gl/8tGuEj
3. Click Sign Up Now Button.
3. Type Your Domain or Sub Domain On Showing Text Box & Hit Create Button.
4.If you have many sites, you may want to export the keys as a CSV file.
5. Download This CSV File
<script type="text/javascript" src="http://www.google.com/recaptcha/api/challenge?k=your_public_key"> </script> <noscript> <iframe src="http://www.google.com/recaptcha/api/noscript?k=your_public_key" height="300" width="500" frameborder="0"></iframe><br> <textarea name="recaptcha_challenge_field" rows="3" cols="40"> </textarea> <input type="hidden" name="recaptcha_response_field" value="manual_challenge"> </noscript>6. Open Your CSV File And Copy "Public Key".
7. And Replace Here.
8. Now You can Past Anywhere On Your Site.
For Additional
You Want To Publish Captcha After Your Blog Post or Comment Setup
Find Your Blogger HTML Comment <Form>
And Past into That Code like that
<!-- ... your HTML content ... --> <form action="" method="post"> <!-- ... your form code here ... --> <script type="text/javascript" src="http://www.google.com/recaptcha/api/challenge?k=your_public_key"> </script> <noscript> <iframe src="http://www.google.com/recaptcha/api/noscript?k=your_public_key" height="300" width="500" frameborder="0"></iframe><br> <textarea name="recaptcha_challenge_field" rows="3" cols="40"> </textarea> <input type="hidden" name="recaptcha_response_field" value="manual_challenge"> </noscript> <!-- ... more of your form code here ... --> </form> <!-- ... more of your HTML content ... -->