Yuck but not really far-fetched. Screenplays operate on exactly this system: they must be registered with the appropriate governing body before any reputable filmmaker or studio will look at them. (It's to prevent annoying and costly "You stole my script!" lawsuits-- or, ahem, actual script-stealing.) But the "appropriate governing body" is, of course, not any of those studios; it's an independent third party.
The website analogy would call for some independent body to look at web pages and verify that they don't match any existing page before any reputable search engine will index them.
This wouldn't stop you from changing a page after it's got the seal of approval. But then, scripts get rewritten too.