Telegram Captcha Bot

Telegram bot that validates new users that enter supergroup. Validation works like a simple captcha. Bot written in Go (Golang).

This bot has been tested on several supergroups (1000+ people) for a long time and has shown its effectiveness against spammers.

How it works

1. Add the bot to your supergroup
2. Promote the bot for administrator privileges
3. A new user enters your supergroup
4. Bot restricts the user's ability to send messages
5. Bot shows a welcome message and a captcha button to the user
6. If the user doesn't press the button within 30 seconds then the user is banned by the bot

Commands

/healthz - check that the bot is working correctly

Сustomization

You can change several bot's settings (welcome message, ban duration, socks5 proxy server) through the configuration file config.toml