IACR News item: 07 January 2016
Alexander Schaub, Rémi Bazin, Omar Hasan, Lionel Brunie
ePrint Report
Reputation systems are crucial for distributed applications
in which users have to be made accountable for their actions,
such as e-commerce websites. However, existing systems often disclose
the identity of the raters, which might deter honest users from posting
reviews, out of fear of retaliation from the ratees.
While many privacy-preserving reputation systems have been proposed,
none of them was at the same time truly decentralized, trustless, and suitable
for real world usage in, for example, e-commerce applications.
After discussing the weaknesses and shortcoming of existing solutions,
we will present our own blockchain-based trustless reputation
system, and analyze its correctness and the security guarantees it promises.
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