Just what was the Radiohead Binary Code theory - and was there any truth in it?

Were hints that OK Computer and In Rainbows should be listened to as one monster record deliberately seeded by the band?
CNET

You No Longer Need a Special Code for Sora 2. Here's How It Works

The floodgates have been open to the viral Sora 2 app. Now, anyone in the US (Canada, Japan and South Korea) can access it.