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How do you guarantee that the data in question is not changed without blockchain?
by tabeth 9y ago
How do you guarantee that the data in question is not changed without blockchain?
- sunaurus 9y agoA centralized blockchain does not guarantee that at all. In fact, it's probably impossible to guarantee this for any kind of centralized service. In order to be able to trust centralized ledgers, clients need to keep a local copy (or a local history of hashes) so that they can detect manipulation (regardless of whether you're using a blockchain or something else to store your data).
- joosters 9y agoYou can't, but that is irrelevant if the centralized service is required. You can point at the blockchain data all you like, but if the centralized service that you rely on chooses to ignore the blockchain data, you're out of luck. Hence, you either need no centralized points, or just ditch the blockchain and put all your faith in the central resource. If it is trustworthy, great, everything has become much more efficient. If it isn't, you're screwed, regardless of whether or not there's a blockchain.