Those who have heard of “blockchain†technology generally know it as the underpinning of the Bitcoin virtual currency, but there are myriad organizations planning different kinds of applications for it: executing contracts, modernizing land registries, even providing new systems for identity management. There’s one huge problem on the horizon, though: European privacy law. The bloc’s General Data Protection law, which will come into effect in a few months’ time, says people must be able to demand that their personal data is rectified or deleted under many circumstances. A blockchain is essentially a growing, shared record of past activity that’s distributed across many computers,…
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