Decentralized Attestation and Distribution of Information Using Blockchains and Multi-Protocol Storage

Härer, Felix; Fill, Hans-Georg

doi:10.1109/access.2022.3150356

Cited by 7 publications

(2 citation statements)

References 63 publications

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“…The high level of security provided by decentralized data storage systems is their most significant advantage [40]. Shared data is broken down into smaller chunks using hashes or public-private keys to encrypt copies of the original data and share copies of the original data with each other.…”

Section: ) Increased Security and Privacymentioning

confidence: 99%

A Comprehensive Survey on Blockchain-Based Decentralized Storage Networks

et al. 2023

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Blockchains are a new approach to creating distributed networks that were first introduced in 2008. It allows the formation of peer-to-peer networks based on consensus, forming chains from accepted blocks without requiring a central authority or centralized controller. A prominent application of this technology is its use in decentralized storage systems. Individuals in decentralized storage networks rent unused hardware storage space to other individuals. A decentralized network utilizing end-to-end encryption eliminates the risk of data loss associated with centralized data control by enabling clients to transmit their files securely. The storage providers must prove that they have kept unaltered files in this network for this time. Many studies have been conducted in this specific domain, most targeting storage capacity and efficiency, but a security, integrity and privacy loophole need to be addressed. This paper presents an overview of blockchain-based storage systems and how they work, followed by a comparison with cloud-based storage networks and a survey of various decentralized storage networks like SIA, File coin, and Storj available on the market. Next, we discuss the advantages and disadvantages of blockchain-based storage. In our final discussion, we examine the security problems of decentralized storage networks and explore potential solutions and research directions for the future.

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Section: ) Increased Security and Privacymentioning

confidence: 99%

A Comprehensive Survey on Blockchain-Based Decentralized Storage Networks

et al. 2023

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“…Ethereum and subsequent blockchains have enhanced these capabilities by incorporating smart contracts, acting as quasi Turing-complete programs [28,6]. Beyond payments and currency, smart contracts facilitate e-commerce, sales contracts, timestamping, and attestations, among other applications [16,18,11].…”

Section: From Bitcoin To Blockchainsmentioning

confidence: 99%

Towards Interoperability of Open and Permissionless Blockchains: A Cross-Chain Query Language

Härer

2022

2022 IEEE International Conference on E-Business Engineering (ICEBE)

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Open and permissionless blockchains are distributed systems with thousands to tens of thousands of nodes, establishing novel platforms for decentralized applications. When realizing such an application, data might be stored and retrieved from one or more blockchains by distributed network nodes without relying on centralized coordination and trusted third parties. Data access could be provided through a query language such as SQL at the application level, establishing a unified view on application-level data that is verifiably stored. However, when accessing multiple blockchains through their node software and APIs, interoperability cannot be assumed today, resulting in challenges of inhomogeneous data access. In addition, different feature sets and trade-offs exist, e.g., regarding smart contract functionality, availability, distribution, scalability, and security. For increasing interoperability, the paper at hand suggests pursuing the development of a cross-chain query language at the application level. The language abstracts from implementation by providing a standardized syntax, an integrated data model, and a processing architecture for data queries. This research is an extended and updated paper demonstrating the language syntax, data model, and architecture with an evaluation of compatibility against the largest open and permissionless blockchains today.

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DIAR: a blockchain-based system for generation and verification of academic diplomas

Rustemi,

Dalipi,

Atanasovski

et al. 2024

Discov Appl Sci

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Nowadays, the centralized systems used in higher education institutions are sophisticated and have high security mechanisms, offering secure data transfer and real-time encryption. Despite the prevalent usage of centralized systems in many institutions, particularly those within the realm of higher education, some unresolved concerns persist pertaining to privacy, potential abuse, transparency, and the limited capacity to digitize numerous services. Blockchain systems are considered as a potential solution for addressing these constraints. This study begins by highlighting the significance of implementing blockchain systems in higher education institutions, while also outlining the obstacles encountered by researchers in this domain. Centralized systems and blockchain systems are distinguished, with a description of the challenges related to data transfer and adaptation to different platforms. A thorough explanation of the proposed blockchain system begins with a presentation of the conceptual model, followed by a detailed architecture of the processes that would be executed by the system, with particular emphasis on the generation and authentication of academic credentials. Additionally, an analysis is provided on the significance of smart contracts in the programming of blockchain systems. This includes a detailed explanation of the main smart contract architecture used in the proposed blockchain system. This article aims to explore the development of a proposed blockchain system and its practical implementation for testing purposes using specific scenarios and data in the foreseeable future.

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Decentralized Attestation and Distribution of Information Using Blockchains and Multi-Protocol Storage

Cited by 7 publications

References 63 publications

A Comprehensive Survey on Blockchain-Based Decentralized Storage Networks

A Comprehensive Survey on Blockchain-Based Decentralized Storage Networks

Towards Interoperability of Open and Permissionless Blockchains: A Cross-Chain Query Language

DIAR: a blockchain-based system for generation and verification of academic diplomas

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