which is half of the AACS key from that 2007 DMCA C&D lol
perhaps one of the earliest big 'Streisand effects' online
that article is an underrated piece of web oral history, also.
there's an underrated footnote that points to here, a random generator for these keys since they were showing how silly it was to copyright a number
and so, as you do, someone posted the leak for the key replacing 09-f9-etc in the comment thread
https://freedom-to-tinker.com/2007/05/07/you-can-own-integer-too-get-yours-here/#comment-10536
anyway it's a very good lesson in how to provide cover to leaks