I also got to know this from someone (I guess it was actmyname IIRC). There is a unique ID allotted to every Telegram account which could be accessed through
userinfobot.
[1] Go to Telegram search bar and type "
@userinfobot".
https://web.telegram.org/#/im?p=@userinfobot[2] Start the bot and it will display your actual User ID no. In my case the bot displays my ID:
@pjsonowal
Id: 186710008
First: Avirunes
3) Ask your user to verify if its you by forwarding one of the chat messages to "
@userinfobot". If the user ID matches then they are talking to right guy.
I made another account in TG to explain this. I sent a message to my primary TG ID and forwarded that message to "
@userinfobot" and this is what it showed me:
So in this way users can check and verify.
You should check your Telegram ID and put it up on your main thread and link this post to help them verifying if they are talking to actual user.