## Pleroma.Captcha
* `enabled`: Whether the captcha should be shown on registration
* `method`: The method/service to use for captcha
+* `seconds_retained`: The time in seconds for which the captcha is valid (stored in the cache)
### Pleroma.Captcha.Kocaptcha
Kocaptcha is a very simple captcha service with a single API endpoint,
-the source code is here: https://github.com/koto-bank/kocaptcha
+the source code is here: https://github.com/koto-bank/kocaptcha. The default endpoint
+`https://captcha.kotobank.ch` is hosted by the developer.
* `endpoint`: the kocaptcha endpoint to use
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