title: How to join my Telegram Bot to PUBLIC channel
body: <p>My question is: 
  how to join my telegram bot to a telegram public channel that I am not administrator of it, and without asking the channel's admin to add my bot to the channel?</p>
  
  <p>maybe the chatId of channel or thru link of channel?</p>
  
  <p>Thank you in advance :)</p>
  
  <p>edit------
  I have heard that some people claim to do this join their bot to channels, and scrape data.
  So if Telegram does not allow it, how can they do it? can you think of any work around?
  Appreciate your time?</p>