They'd definitely have to have a screenshot, but if he was really dedicated, he could check the exif for photoshop data.
凸[◣_◢]凸 PRAISE LID 凸[◣_◢]凸 FUCK THA HATERS 凸[◣_◢]凸 PUT THIS IN YO SIG IF U DOWN 凸[◣_◢]凸