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A comment on Ask HN: Are there any substantial examples of blockchain solving a real problem?. Parent comment

Re:Ask HN: Are there any substantial examples of blockchain ... by paulgb on Sunday April 19, 2020 @06:51AM (#22914908)
To OP's question though, are there real-world cases of blockchain tech being used for this, or is it more of a hypothetical?

The reason I ask is that the security of Blockchain comes at a cost (both in additional complexity and, for PoW at least, energy use). Have people who need those records in the real world found the additional tamper-proofness worth the cost?

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Re:Ask HN: Are there any substantial examples of blockchain ... by xupybd on Sunday April 19, 2020 @07:05AM (#22914976)
https://www.ledgerinsights.com/blockchain-pharma-supply-chai...

It's been done. But has it really solved a problem? I'm not sure. Perhaps it's just better to use a simpler solution. A key on an iot device could sign every entry.

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