Oh ok, thanks!

You can sign it on the initiative’s website. It’s linked in there.

keeping information like training methods and data sources secret was necessary to stop its work being copied by rivals.

In addition to the possible business threat, forcing OpenAI to identify its use of copyrighted data would expose the company to potential lawsuits. Generative AI systems like ChatGPT and DALL-E are trained using large amounts of data scraped from the web, much of it copyright protected.

These two paragraphs one after the other really brightened my day.