Perma.cc is a service to create persistent links to resources cited in publications. By using perma.cc, you can mitigate link rot within your citations; link rot is when web pages become unavailable or when the content on those pages shifts. Perma.cc is a service developed and maintained by the Harvard Law Library.
As a Cornell colleague engaged in publishing, you can register for a free account. Unlike private accounts with subscription-based limitations on number of perma.cc links created, your Cornell-affiliated account allows you to create an unlimited amount of perma.cc links.