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You'll love to hear that Blu-ray's format protection creators tried making illegal publishing the hexagesimal number "09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0". https://en.m.wikipedia.org/wiki/Illegal_number#Background.
The article doesn't even assert it's illegal. Just asserts someone has said so.
AACS did push with DMCA complains to remove any referente of the number back in the day. However, another article claims "No one has been arrested or charged for finding or publishing the original key".
You are right, thanks for the correction, will edit my comment.
HD DVD, not Blu Ray, a competing format
I think both shared the same key: Archive link.
It's shocking to me the major events of my life that have fallen into the memory hole. It's not just that younger people haven't learned about them, older people have just filtered them out. It's like we live in an eternal now that stretches infinitely in both directions, until it abruptly changes and yet another new reality becomes our new past and future.
That's not new, often you can look at events boomers claim to have witnessed and find actual accounts completely different, like soldiers returning home from Vietnam and getting spit on and called baby killer, feminists burning bras.
You look back further and there's so much discrepancy between accounts of the civil war and then reconstruction, and then second rise of the kkk during these events and just 2 decades later.