Dx Like & Comment Bots

What do Likes & Comments exchange bots do?
Exchange checker bots manage like/comments exchange groups in Telegram.

In this groups, every user can send a link of a photo (from his profile, or mirror profile), to get more Likes / Comments from other users, but before doing it, the bot will check that he has Liked / Commented the photos of the users before him.

This kind of bot verifies that users have really commented / liked the last N PHOTOS before publishing his own