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The talk he explores models and technical architectures for a new generation of data marketplace for Personal Data from Things (PDT).
In this model, brokered data exchanges that occur on the network are tracked without the need for a trusted authority, namely using (a) blockchain technology to record data exchange transactions, and (b) smart contracts that operate on the blockchain, to enforce agreements between data producers and consumers.
In this vision, smart contracts can also be used for dispute resolution, in combination with reputation management mechanisms, to provide incentives for fair behaviour by participants.
Simple data tracking of brokered exchanges is a natural precursor to recording the full provenance of data further down the value chain, i.e., through value-adding aggregators and services. As provenance arguably adds value to information, the project will also study mechanisms for observing and recording complex transformations over data streams.