How to prevent bot-generated spam in external Oracle Responsys forms?

Hello everyone,

We've been experiencing some SPAM issues with our external forms integrated with Oracle Responsys. We’ve tried implementing a honeypot method, which involves creating a hidden field in the form and using JavaScript logic to disable the submission if the field contains data. However, this hasn’t been effective, as we are still receiving unwanted bot registrations.

We are now considering using Google reCAPTCHA (version 2) to mitigate this issue. However, we’re unsure if it’s possible to implement it purely on the frontend, as Responsys provides us with an action and inputs for form submission without needing a backend server to process the data.