Using Blockchain Technology to Manage Membership and Legal Contracts in a Distributed Data Market.

The Data Market Austria (DMA) is an ecosystem of federated data and service infrastructures. It aims at establishing a market platform where data assets can be made accessible and offered for purchase. To support this, the DMA offers a central portal with catalogue and search services as well as a set of microservices for metadata mapping or enrichment, data quality assessment, data set submission, storage, management, and dissemination. The DMA relies on blockchain technology to allow a network of DMA members sharing information about the provenance and trading of datasets and services. This paper describes the blockchain application scenarios and the implementation of the blockchain-based distributed setup of the DMA.