What is the meaning of the official transcript? I am going to apply for graduate admission in the US universities. Most of the universities require official transcript  which  must be sent from my institute with official envelope and seal.

I went to my university to send the offical transcript to the US universities. The controller of the examiner asked me that which one I want. New transcript or copy of my transcript verified by the controller with envelope seal.

More precisely, they asked me to give them photocopy of my original transcript. After I give them the copy, they will sign and pul offcial seal to send to the university I wanted to send. 

My question is that,, 


  will the US universities consider the  copy of the main transcripts(verified by the exam controller with enveloped and seal) as official?


or


  US universities  are expecting original transcripts (with seal and
  enveloped) like I have a copy with me?
If this is about graduate admission, universities normally require an official transcript (i.e. NOT a copy). An official transcript normally carries the signature of the Registrar, is in color, and is put in an sealed envelop prepared by the Registrar's office.

Some US universities require that your transcript comes directly from the Registrar's office of your institution, while some would accept one that you send in as long as it's inside the sealed envelop prepared by the registrar's office.