Data has become the most important and valuable asset recently. Researchers, analysts and engineers from every field need real dataset in order to analyze market trends, train their systems etc. Existing systems for data exchange can broadly be classified in to two- paid and free. A lot of paid data exchange markets are available. In those paid systems, data owners will provide their dataset and data consumers find their interested dataset. In these systems, it is much difficult to protect privacy and copyrights. Also, special techniques are required to maintain the data services for large organizations who are having big dataset like hospitals, banks, government departments etc. A decentralized system for data exchange will solve most of those issues mentioned above. Collaboration of big data and the trending technology of nowadays called the blockchain will be an innovative solution. In this atmosphere, every members exchange data in a peer-to-peer way. One can audit the use of dataset in order to protect the copyright and privacy as the blockchain records all the documents. No need of a third party is one of the attractive advantages.
Keywords : Blockchain, Data Exchange, Decentralization, Collaboration.