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I got interested in mCaptcha, followed your link, but couldn’t find anywhere an example of what the end user would deal with. What kind of PoW are we talking about?

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You can find some demos linked on github [1], the simplest being: https://demo.mcaptcha.org/widget/?sitekey=pHy0AktWyOKuxZDzFf...

[1] https://github.com/mCaptcha/mCaptcha#client-side-widget

Thanks, the GitHub page is much better.

Did you click on Link to Widget? It's just above the video link.

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