BoP, thanks for a good explanation of a non-crypto use of blockchain -- as is common for you an informative post. I do have to point out what seems like a small mistake though. Pretty sure you meant, "it costs very few" instead of "it costs zero" here.
Burrito of Peace wrote on Oct 17, 2021, 00:58:
I have started using blockchain to insure and verify the security of my backups both here and at work. It costs zero additional cycles, and therefore power, to do so. We waste much more power for playing games. You can even add blocks on to a chain or create a chain from a very low power device like a Raspberry Pi. It would take a while because of a Raspberry Pi's relatively slow speed, but it is doable.
“Extinction is the rule. Survival is the exception.” -- Carl Sagan