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Unmaintained CoinHive Captcha 1.0.2

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Compatible XF 1.x versions
  1. 1.2
  2. 1.3
  3. 1.4
  4. 1.5
Additional requirements
Visible branding
From a website owner's perspective the Coinhive captcha works exactly like a conventional captcha, such as Google's reCaptcha.


The captcha is embeded in an HTML form, runs client side in the user's browser and generates a token. The token is submitted together with the other form data. You can then validate this token on your server through our HTTP API.

Demo video showing the proof of work captcha

Unlike with a conventional captcha however, the user does not have to “proof they're human”. Instead, the captcha is a “proof of work” – making it uneconomic for spammers to game your system.


Add 1.0.2:

When loaded through the JavaScript API will ask the user for consent as soon as miner.start() is called. This is done in a popover window directly on your page. You will not be able to start the miner if the user cancels the opt-in.
If the user gives consent, an opt-in token is stored in a cookie on your website. If this token is not expired, the miner can start again without a further explicit opt-in.
To prevent misuse, the text in the opt-in screen can not be altered. We will offer translations of this screen for different languages in the future.
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Reactions: Alpha1
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5.00 star(s) 1 ratings

Latest reviews

Very nice plugin!
It is the best substitute for Google reCAPTCHA (China cannot connect to Google)!
它是google recaptcha的最好代替品 ! (中国无法连接google)
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