583 research outputs found
NFT as a proof of Digital Ownership-reward system integrated to a Secure Distributed Computing Blockchain Framework
Today, the global economy is dependent on the Internet and computational resources. Although they are tightly interconnected, it is difficult to evaluate their degree of interdependence. Keeping up with the pace of technology can be a challenging task, mainly when updating the hardware and software infrastructure. Every day, corporations and governments are faced with this issue; most have been victims of cyber attacks, security breaches, and data leaks. The consequences are significant in monetary losses; damage remediation is unattainable, even impossible, in certain circumstances. The repercussions might include reputational damage, legal responsibility, and threats to national security (when attacks are carried out against critical infrastructures to control the resources of a country), to name a few. Similarly, data has become such an integral part of many industries that it is one of the most critical targets for attackers that often is encrypted by ransomware, stolen, or corrupted. Without data, many companies are not be able to continue operating as they do. The combination of all these factors complicates the ability of organizations to cooperate, trust, and share information in efforts to research and develop solutions for industry and government. A promising technology can assist in significantly reducing the damage caused by the security threats outlined above: Blockchain technology has proven to be one of the most promising inventions of the twenty-first century for transmitting and protecting information while offering high reliability and availability, low exposure to attacks, protected encrypted data, and accessible to the entities willing to participate. Blockchain enabled the possibility to embed immutable data and compiled source code known as ‘smart contract’ where certain rules can be programmed to create business workflows. This thesis report proposes a Blockchain-based infrastructure solution provided by ”Hyperledger Fabric” technology for companies to securely transmit and share information using the latest encryption and data storage technologies operating on the model of distributed systems and smart contracts. By presenting unique digital assets as Non-Fungible Tokens (NFT), the infrastructure is able to trust the integrity of the data, while protecting it from counterfeiting. Through the use of a Blockchain-based file storage system known as IPFS, and by connecting all the relevant elements together through a web-based application, it is possible to demonstrate that the implementation of such systems is feasible, highly scalable and a useful tool that many organizations can utilize to create new work systems and workflows for digital asset management
Enabling trust and security in digital twin management:a blockchain-based approach with ethereum and IPFS
The emergence of Industry 5.0 has highlighted the significance of information usage, processing, and data analysis when maintaining physical assets. This has enabled the creation of the Digital Twin (DT). Information about an asset is generated and consumed during its entire life cycle. The main goal of DT is to connect and represent physical assets as close to reality as possible virtually. Unfortunately, the lack of security and trust among DT participants remains a problem as a result of data sharing. This issue cannot be resolved with a central authority when dealing with large organisations. Blockchain technology has been proposed as a solution for DT information sharing and security challenges. This paper proposes a Blockchain-based solution for digital twin using Ethereum blockchain with performance and cost analysis. This solution employs a smart contract for information management and access control for stakeholders of the digital twin, which is secure and tamper-proof. This implementation is based on Ethereum and IPFS. We use IPFS storage servers to store stakeholders’ details and manage information. A real-world use-case of a production line of a smartphone, where a conveyor belt is used to carry different parts, is presented to demonstrate the proposed system. The performance evaluation of our proposed system shows that it is secure and achieves performance improvement when compared with other methods. The comparison of results with state-of-the-art methods showed that the proposed system consumed fewer resources in a transaction cost, with an 8% decrease. The execution cost increased by 10%, but the cost of ether was 93% less than the existing methods
Analysis of web3 solution development principles
In the master's thesis, we researched the principles of Web3 solution development. We studied the blockchain and blockchain-related technology, development of the Web including all versions of the Web and the differences between them. We presented the popular technologies for Web3 development and the most common Web3 solutions with examples. With help of systematic literature review we explored the state-of-art technologies for Web3 solution development and proposed a full-stack for Web3. In the final part we implemented a proof-of-concept Ethereum decentralized application and compared it with equivalent concept of Web2 application. We proposed future work of researching other popular blockchain protocols like Solana or Polygon
Quantinar: a blockchain p2p ecosystem for honest scientific research
Living in the Information Age, the power of data and correct statistical
analysis has never been more prevalent. Academics, practitioners and many other
professionals nowadays require an accurate application of quantitative methods.
Though many branches are subject to a crisis of integrity, which is shown in
improper use of statistical models, -hacking, HARKing or failure to
replicate results. We propose the use of a peer-to-peer education network,
Quantinar, to spread quantitative analysis knowledge embedded with code in the
form of Quantlets. The integration of blockchain technology makes Quantinar a
decentralised autonomous organisation (DAO) that ensures fully transparent and
reproducible scientific research
IDMoB: IoT Data Marketplace on Blockchain
Today, Internet of Things (IoT) devices are the powerhouse of data generation
with their ever-increasing numbers and widespread penetration. Similarly,
artificial intelligence (AI) and machine learning (ML) solutions are getting
integrated to all kinds of services, making products significantly more
"smarter". The centerpiece of these technologies is "data". IoT device vendors
should be able keep up with the increased throughput and come up with new
business models. On the other hand, AI/ML solutions will produce better results
if training data is diverse and plentiful.
In this paper, we propose a blockchain-based, decentralized and trustless
data marketplace where IoT device vendors and AI/ML solution providers may
interact and collaborate. By facilitating a transparent data exchange platform,
access to consented data will be democratized and the variety of services
targeting end-users will increase. Proposed data marketplace is implemented as
a smart contract on Ethereum blockchain and Swarm is used as the distributed
storage platform.Comment: Presented at Crypto Valley Conference on Blockchain Technology (CVCBT
2018), 20-22 June 2018 - published version may diffe
Blockchain-Enabled Federated Learning: A Reference Architecture Design, Implementation, and Verification
This paper presents an innovative reference architecture for
blockchain-enabled federated learning (BCFL), a state-of-the-art approach that
amalgamates the strengths of federated learning and blockchain technology. This
results in a decentralized, collaborative machine learning system that respects
data privacy and user-controlled identity. Our architecture strategically
employs a decentralized identifier (DID)-based authentication system, allowing
participants to authenticate and then gain access to the federated learning
platform securely using their self-sovereign DIDs, which are recorded on the
blockchain. Ensuring robust security and efficient decentralization through the
execution of smart contracts is a key aspect of our approach. Moreover, our
BCFL reference architecture provides significant extensibility, accommodating
the integration of various additional elements, as per specific requirements
and use cases, thereby rendering it an adaptable solution for a wide range of
BCFL applications. Participants can authenticate and then gain access to the
federated learning platform securely using their self-sovereign DIDs, which are
securely recorded on the blockchain. The pivotal contribution of this study is
the successful implementation and validation of a realistic BCFL reference
architecture, marking a significant milestone in the field. We intend to make
the source code publicly accessible shortly, fostering further advancements and
adaptations within the community. This research not only bridges a crucial gap
in the current literature but also lays a solid foundation for future
explorations in the realm of BCFL.Comment: 14 pages, 15 figures, 3 table
Boosting IoT data valorization through the adoption of DLT
During the last decade Internet of Things has become one of the key technologies in supporting digital transformation of several ecosystems such urban or industry ones. The huge amount of data generated in such contexts as well as the imperative requirements in terms of trustworthiness, authenticity and integrity make compulsory the adoption of the proper solutions fitting those requirements. This paper presents the design, implementation and validation of a distributed ledger technology architecture emphasizing services linked to data valorization.This work is supported by the TOKEN Project: “Transformative Impact Of BlocKchain tEchnologies iN Public Services”, Grant Agreement 870603, belonging to the H2020 Framework Program. The authors want to acknowledge the valuable work carried out by the colleagues participating in this initiative
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