If you're looking to watch Interstellar in 4K full HD, here are some available sources:
To ensure an optimal viewing experience, consider the following: index+of+interstellar+4k+full
These links are often direct downloads—no streaming interface, no ads (usually), no middleman. For a user with a fast fiber connection and a large hard drive, finding a live index is like discovering the Library of Alexandria. If you're looking to watch Interstellar in 4K
: Provides the highest possible bitrate and lossless audio (DTS-HD Master Audio). Digital UHD Purchase no ads (usually)