There is already the Lumen Database[0]:
> The Lumen database collects and analyzes legal complaints and requests for removal of online materials, helping Internet users to know their rights and understand the law. These data enable us to study the prevalence of legal threats and let Internet users see the source of content removals.
You can search it for references to the right to be forgotten[1], although the results will not contain full URLs of the removal requests.
[0]: https://www.lumendatabase.org/
[1]: https://www.lumendatabase.org/notices/search?utf8=%E2%9C%93&...