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Rows in the database are never updated or deleted. Only new rows are added.

• Animats 7y ago
  A blockchain could be used to enforce that immutability. Which might be an actual, useful application for blockchains.
  • Scarblac 7y ago
    By itself a block chain just stores hash with each block, they could be recomputed after a change. Just like how Git history can be changed. Unless you're talking about a distributed public no-trust ledger, yes that can be solved with block chain as it's what Bitcoin is. But that's not a problem they're having.
  • mateuszf 7y ago
    > A blockchain could be used to enforce that immutability. Which might be an actual, useful application for blockchains. Yes, and surprisingly the implementation is called Bitcoin ;)
  • chris_wot 7y ago
    Sure, but that’s only needed in a purely distributed environment. There is absolutely no need for a blockchain in a centralised private database you have full control over.