Looks like it's not an official thing, it's a fan project: https://twitter.com/shiffman/status/1512075150857965574 - here's the YouTube video (2h52m from a livestream) where Daniel Shiffman introduces it, at about 34m in https://www.youtube.com/watch?v=7Vmcm25cSTU - then talks through how it works.
"This website is not affiliated with Apple, Endeavor Content, Red Hour Films, or anything else remotely official. It’s made by a dude in Kentucky."
Looks like it's not an official thing, it's a fan project: https://twitter.com/shiffman/status/1512075150857965574 - here's the YouTube video (2h52m from a livestream) where Daniel Shiffman introduces it, at about 34m in https://www.youtube.com/watch?v=7Vmcm25cSTU - then talks through how it works.