I also remember MM (Music Mafia) on their site had a snippet of Rebellion (The clip we all have). This site was known for having unreleased tracks by many artists but you needed to pay for tracks using bitcoin... (Or something similar to bitcoin at the time) anytime they posted a snippet of songs, they were then later released for purchase for the full track.
I don't know if they were claiming to have the full track as it was only a snippet. Once people were speculating that they did have it, the site went down in less than a week I believe. I don't know where they've relocated or still exist somewhere. They also posted a snippet of telephone as well, could have just been the HQ demo.