I downloaded the movie after seeing it in theatre to once again enjoy it from the comfort of my home. Seeing 2160p, I thought it's going to be a webcam rip but the title says webrip. Where is this leaked from that has Dolby Vision on a movie still in theatre?
IIRC digital cinema files are usually DRM locked in a special format and are also imperceptibly watermarked somewhere throughout the video. They're distributed to cinemas usually on physical hard drives/SSD's. I don't know anything about the security details other than that, off to YouTube it is!