Because Archive.org is unreliable for these specific files (links die quickly), the fan community uses other methods. If you cannot find a working link on Archive.org, this is where the "live" files usually reside:
4k83, by contrast, offers texture. The grain structure of the 35mm film provides an organic quality that modern digital upscales often lack. The colors are warmer, heavier on the magentas and cyans typical of 1970s film stock. Watching 4k83 is not just watching a movie; it is an act of time travel. It validates the memories of a generation who remember the film before it was branded as "Episode IV." 4k83 archive.org
Because the official Star Wars movies are copyrighted by Disney (formerly Lucasfilm), the presence of exists in a legal grey area. However, Archive.org generally hosts these files under "Fair Use" preservation arguments, provided no one is profiting from them. You will not find these files on The Pirate Bay or torrent indexes; you will find them indexed on the Internet Archive. Because Archive
You can find directory listings for various file formats, including 1080p and full 4K UHD versions. Legal Note: The colors are warmer, heavier on the magentas