In applications for academic jobs that ask for a "copy of transcript", is a "copy of transcript" an unofficial or official copy?

I am confused in a lot of applications for academic jobs, such as assistant professor, lecturer, instructor, at academic institutions. Many of them ask for a "copy of transcript," but I am unsure about what this means. Does this mean I need to get my official sealed transcript, open it, and copy it, or does it mean I can use the unofficial transcript?