There was that "smart contract" idea back when immutable distributed ledgers were in fashion. I still struggle to see the approach being workable for anything more complicated (and muddied) than Hello World level contracts.
My cupboard server at home is 2007 vintage ThinkPad I inherited from my father's discarded machines. The battery is gone and the CPU fan is shot so the processor sits at about 80 degrees C and gets thermally throttled very aggressively indeed should any work come its way (little does, and Debian doesn't ask much of it either). I didn't hold out much hope for its longevity but the damn thing just keeps running.
I wouldn't be surprised if its DVD drive is also okay and if you gave me a disc I could read the stuff off of it for you. Now there's something not everyone can do these days.
Oh we can have something stronger than almost a guarantee, I have first hand anecdotes of documents from the financial services sector being fed to ChatGPT for polishing. They weren't trade secrets but their classifications were INTERNAL, _and higher_.