DBNode: A Decentralized Storage System for Big Data Storage in Consortium Blockchains
Narges Dadkhah, Xuyang Ma, Katinka Wolter, Gerhard Wunder

TL;DR
This paper introduces DBNode, a decentralized storage system tailored for consortium blockchains like Hyperledger Fabric, focusing on data privacy, access control, and efficient storage using erasure coding and smart contracts.
Contribution
It presents a novel storage architecture specifically designed for consortium blockchains, addressing privacy and access control with innovative data partitioning and smart contract mechanisms.
Findings
Enhanced data availability through hash-slots and mirror strategies
Efficient storage with hierarchical erasure coding
Access control managed by smart contracts
Abstract
Storing big data directly on a blockchain poses a substantial burden due to the need to maintain a consistent ledger across all nodes. Numerous studies in decentralized storage systems have been conducted to tackle this particular challenge. Most state-of-the-art research concentrates on developing a general storage system that can accommodate diverse blockchain categories. However, it is essential to recognize the unique attributes of a consortium blockchain, such as data privacy and access control. Beyond ensuring high performance, these specific needs are often overlooked by general storage systems. This paper proposes a decentralized storage system for Hyperledger Fabric, which is a well-known consortium blockchain. First, we employ erasure coding to partition files, subsequently organizing these chunks into a hierarchical structure that fosters efficient and dependable data…
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