Ah, I actually did something similar years ago. I basically hashed individual pages of my wiki and I think I published the hash of hashes on the Blockchain. Anyway I didn't need it and stop maintaining that system but definitely interesting explorations.
To clarify the hashing was to verify that the pages were indeed modified by me, to prevent tempering.
Damn, found it back, was in 2011!
in English https://fabien.benetou.fr/Slideshows/MemoryLoss
in French https://fabien.benetou.fr/Slideshows/MemoryLossPES
FWIW as I commented just earlier if you have to verify without relying on memory nor a public note (e.g. sticker on screen) that others could use to pollute your data then use a biometric mechanism, e.g. YubiKey Bio.
- bigger TV, my "old" not even 4K video projector is enough
- faster phone with more memory or better camera, my current one as "just" 5G, is enough
- faster laptop/desktop, I can work on the laptop, game on desktop
- higher resolution VR headsets (but I'll still get a Steam Frame because it's more free)
- denser smart watch, I'm not even using the ones I have
... so, the situation is bad, yes, and yet I don't really care. The hardware I have is good enough and in fact regardless of AI I've been arguing we've reached "peak" IT few years ago already. Of course I wouldn't mind "better" everything (higher resolution, faster refresh rate, faster CPU/GPU, more memory, more risk, etc). What I'm arguing for though is that most "normal" users (please, don't tell me you're a video editor for National Geographic who MUST edit 360 videos in 8K! That's great for you, honestly, love that, but that's NOT a "normal" user!) who bough high end hardware during the last few year matches most of their capabilities.
All that being said, yes, pop that damn bubble, still invest in AI R&D and datacenters, still invest in AI public research for energy, medicine, etc BUT not the LLM/GenAI tulip commercial craze.