Bot Update v1.31.1:
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Just a minor update to add Serbo-Croatian (EX-YU) language support.

You can set this new language in a group by:
/language sr

Bot Info:
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Remember that the Bot support now 27 languages and you can configure to use any of them in your groups.

Arabic, Basque, Belarusian, Catalan, Chinese-Simplified, Dutch, English, Esperanto, Finnish, French, Galician, German, Greek, Hebrew, Indonesian, Italian, Kannada, Korean, Persian, Polish, Portuguese-Brazil, Russian, Serbo-Croatian, Slovak, Spanish, Turkish, Ukrainian, and Uzbek.

You can check the full list of languages and how to setup any of them with the command
/language

Bot Server Maintenance:
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Bot server requires some maintenance.

@pro_join_captcha_bot will be kept running.

@join_captcha_bot will be unavailable for some time.

Bot Server Maintenance:
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Server maintenance completed.

@join_captcha_bot is available again.

Bot Server Maintenance:
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Bot server requires some maintenance.

@pro_join_captcha_bot will be kept running.

@join_captcha_bot will be unavailable for some time.

Bot Server Maintenance:
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Server maintenance completed.

@join_captcha_bot is available again.

Comment Group Removed:
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Due the comments group was not really useful, the bound group of this channel has been removed.

Bot Update v1.32.0:
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🚀 New features

- Users can now call group admins to report spam by sending any of this: /admin, @admin, #admin, /spam, @spam, #spam

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⚙️ Improvements

- Improved captcha answer messages processing (leaner, faster and better spam detection).

- Detects forwarded messages in captcha answers and remove as spam.

- Group config "delete all messages sent by an user that has fail the captcha" active by default (you can still configure this manually via /remove_all_msg_kick_on and /remove_all_msg_kick_off commands).

- Updated python-telegram-bot framework from v20.0 to v22.6.

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🛠 Fixes

- Fix detection of telegram alias in captcha answer messages and remove as spam.

Bot Update v1.32.2:
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🛠 Fixes

- Fix non-spam messages detected as spam when /url_disable is enabled.

- Fix reaction to admin call msg triggering another admin call.

Bot Update v2.0.0:
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🚀 New features

- JoinCaptchaBot v2: Animated video captchas!

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⚙️ Improvements

- The new video captcha system opens the door for easy creation and future improves of new kind of creative animated captchas.

- Improved code for handling the different captcha modes, now with separated functions for better maintainability and ease future improves.

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📚 Notes

- The new video captchas are much more secure than image based captchas. A video doesn't only adds multiple images (frames) that needs to be analyzed, but also adds the need of "time context understanding" to solve the challenges, that means more technical effort and costs for the spam bots to solve them.

- The video captchas uses a new video captcha generation library that I have just created from scratch, that means currently there is none Spam Bots able to solve it, so if there was any telegram bot programmed to solve the previous image captchas, all of them won't work with this new captchas.

- Due the new animated video captchas are more secure than image based captchas, "captcha_mode" config for all groups has been configured to use the new video captchas. In case you want to go back to image or other captcha mode (i.e. custom poll), you can always configure it back by /captcha_mode command.

- This is a major update and a game changer feature, so possible bugs could arise Please, in case you detect any bug, feel free to report it here:
https://github.com/J-Rios/TLG_JoinCaptchaBot/issues

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For the sake of a Telegram free of Spam, enjoy!

Seems there are some problems for having this feature available for a high number of groups at the same time, from bot server resource limitations to telegram limits for uploading multiple videos at the same time...

Due this:
@join_captcha_bot has been rollback to v1.32.2.
@pro_join_captcha_bot stays at v2.0.0 and it resources will be monitored.

News:
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As you may noticed, now you can enjoy the new animated captchas with @join_captcha_bot!

Groups using default image captchas has been set to this mode.

If you want to use this (or any other) captcha mode, you can set your group with command:
/captcha_mode

Have a nice one :)