Disclosed is a system for providing a peer-to-peer exchange of data files and payments between a seller computing device and a buyer computing device over a communication network in a decentralized marketplace. The system includes a decentralized blockchain database, a private database, plurality of modules stored in the decentralized blockchain database, a graphical user interface and a processing unit. The decentralized blockchain database represents the storage of information related to selling and buying of data files in a peer-to-peer marketplace. The private database stores information related to personal data related to sellers and buyers. The plurality of modules includes a registration module, a data management module, a purpose module, a data signature module, a data transaction module, and a buyer confirmation module. The seller delivers the data file to the buyer using peer-to-peer data transfer medium.
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