(Photo: Public Domain, via Atlas Obscura)
I think I get the basic concepts of what blockchain is and the technology behind it:
A ledger (databas...
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One note: energy usage isn't a blockchain problem, it's a proof-of-work problem. Cryptocurrencies (not blockchains) need to enforce resource scarcity somehow, and the first one people worked out involved wasting a lot of power.
That aside, it smells like snake oil because almost every time you hear about it it is snake oil. There are absolutely legitimate use cases for a distributed, immutable ledger, but 99% of the time somebody says "blockchain" it's to impress people who don't understand what a blockchain is.
Its not just block-chain as of now, its AI as well.
Both are tools designed to do one job well (like a specialised hex screw). But they seem to be duck tapped to a hammer, and being used as a hammer....
😓 which makes it pointless in the context of general purpose hammering, or worse a hazard (what if the duct tape falls out)
Bruce Scheier writes about blockchain and finds it wanting