Nothing comes to mind that you can interface with a computer, but when I wrote the phrase I was thinking of projects on the scale of Long Now [0], requiring physical etching on materials and very careful storage.

Alternatively, tell people that they can't store something and you're likely to find it robustly mirrored by many.

[0] https://longnow.org/ideas/very-long-term-backup/

Well that was a fascinating diversion. This is bonkers!

https://norsam.com/products/buddhist-nano-film/