github.com/prebid/prebid-server/v2@v2.18.0/static/optout.html (about)

     1  <html>
     2  <head>
     3      <script src='https://www.google.com/recaptcha/api.js'></script>
     4  </head>
     5  <body>
     6      To opt-out from all adnxs.com cookies, please demonstrate that you're not a robot!
     7      <form action="../optout" method="POST">
     8      Opt out? <input type="checkbox" name="optout" value="1"/>
     9      <div class="g-recaptcha" data-sitekey="6Le8Mh8UAAAAAGvD_DSfaAPhQ8OwAOVyJtDA_fAC"></div>
    10      <input type="submit"/>
    11      </form>
    12  </body>
    13  </html>