[Resource Topic] 2020/184: Fair and Decentralized Exchange of Digital Goods

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Title:
Fair and Decentralized Exchange of Digital Goods

Authors: Ariel Futoransky, Carlos Sarraute, Daniel Fernandez, Matias Travizano, Ariel Waissbein

Abstract:

We construct a privacy-preserving, distributed and decentralized marketplace where parties can exchange data for tokens. In this market, buyers and sellers make transactions in a blockchain and interact with a third party, called notary, who has the ability to vouch for the authenticity and integrity of the data. We introduce a protocol for the data-token exchange where neither party gains more information than what it is paying for, and the exchange is fair: either both parties gets the other’s item or neither does. No third party involvement is required after setup, and no dispute resolution is needed.

ePrint: https://eprint.iacr.org/2020/184

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