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DEFS—Data Exchange with Free Sample Protocol

Department of Network Engineering, Campus Nord, Universitat Politècnica de Catalunya, 08034 Barcelona, Spain
Department of Information and Communications Technology, Tànger Building, Universitat Pompeu Fabra, 08018 Barcelona, Spain
Author to whom correspondence should be addressed.
Academic Editor: Priyadarsi Nanda
Electronics 2021, 10(12), 1455;
Received: 16 May 2021 / Revised: 5 June 2021 / Accepted: 15 June 2021 / Published: 17 June 2021
(This article belongs to the Special Issue Security and Privacy for Data Decentralized Marketplaces)
Distrust between data providers and data consumers is one of the main obstacles hampering the take-off of digital-data commerce. Data providers want to get paid for what they offer, while data consumers want to know exactly what they are paying for before actually paying for it. In this article, we present a protocol that overcomes this obstacle by building trust based on two main ideas. First, a probabilistic verification protocol, where some random samples of the real dataset are shown to buyers in order to allow them to make an assessment before committing any payment; and second, a guaranteed, protected payment process enforced with smart contracts on a public blockchain that guarantees the payment of data if and only if the provided data meet the agreed terms, and that honest players are otherwise refunded. View Full-Text
Keywords: blockchain; marketplace; privacy; fairness; conflict resolution; non-repudiation; probabilistic verification blockchain; marketplace; privacy; fairness; conflict resolution; non-repudiation; probabilistic verification
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MDPI and ACS Style

Genés-Durán, R.; Hernández-Serrano, J.; Esparza, O.; Bellés-Muñoz, M.; Muñoz-Tapia, J.L. DEFS—Data Exchange with Free Sample Protocol. Electronics 2021, 10, 1455.

AMA Style

Genés-Durán R, Hernández-Serrano J, Esparza O, Bellés-Muñoz M, Muñoz-Tapia JL. DEFS—Data Exchange with Free Sample Protocol. Electronics. 2021; 10(12):1455.

Chicago/Turabian Style

Genés-Durán, Rafael, Juan Hernández-Serrano, Oscar Esparza, Marta Bellés-Muñoz, and José Luis Muñoz-Tapia. 2021. "DEFS—Data Exchange with Free Sample Protocol" Electronics 10, no. 12: 1455.

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