How to implement Google Recaptcha v2 to the web application that has restricted access to Google recaptcha

Question

Let me tell you the use case,

We are developing an application that does financial operations in the closed network i.e. it will not have access to the Google api. Given that, I need to know if there is any possibility of having our own google recaptcha implemented in our on premises.

Answer 1

Without network connection to Google Services there is no way to get needed data for the captcha generation (It at least has to get images). There are other solutions for the simpler captcha implementations like here