An Incentive-Compatible Mechanism for Decentralized Storage Network
Iman Vakilinia, Weihong Wang, Jiajun Xin

TL;DR
This paper proposes a novel incentive-compatible mechanism for decentralized storage networks that reduces verification costs and prevents service denial attacks by using challenge-based proof of storage, modeled as a repeated game.
Contribution
It introduces a challenge-triggered proof of storage scheme using smart contracts and oracles, ensuring honest behavior and broad blockchain platform compatibility.
Findings
The scheme effectively incentivizes honest storage provider behavior.
It reduces verification costs by conducting proof only upon challenge requests.
Implementation demonstrates practical applicability and performance efficiency.
Abstract
The dominance of a few big companies in the storage market arising various concerns including single point of failure, privacy violation, and oligopoly. To eliminate the dependency on such a centralized storage architecture, several Decentralized Storage Network (DSN) schemes such as Filecoin, Sia, and Storj have been introduced. DSNs leverage blockchain technology to create a storage platform such that the micro storage providers can also participate in the storage market. To verify the accurate data storage by the storage providers during a storage contract, DSNs apply a Proof of Storage (PoS) scheme to continuously inspect the storage service. However, continuous verification of the storage provider imposes an extra cost to the network and therefore end-users. Moreover, DSN's PoS verification is vulnerable to a service denying attack in which the storage provider submits valid PoS to…
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Taxonomy
TopicsBlockchain Technology Applications and Security · FinTech, Crowdfunding, Digital Finance · Caching and Content Delivery
