Follow blockchain research across journals, conferences, and preprint repositories.
2,071 results · page 28 of 87
Sandeep Srivastava, Brijesh Kumar Chaurasia, Deepak Kumar Singh
No abstract is available for this record.
Ana Paula Barbosa, Nuno Dâmaso, Diogo Pacheco, Susana Nicola · 5 authors
No abstract is available for this record.
Yadagiri Shiva Sai Sashank, Ankit Agrawal, Ritika Bhatia, Ashutosh Bhatia · 5 authors
No abstract is available for this record.
Puqing Wang, K. L. Hemalatha
No abstract is available for this record.
Sunanda Jana, Esha Sharma, Abhinandan Khan, Arnab Kumar Maji · 5 authors
No abstract is available for this record.
K. S. Suganya, R. Nedunchezhian
No abstract is available for this record.
Hema Sundhar Marasani, S. John Justin Thangaraj
No abstract is available for this record.
Alexandre Moreaux, Mihai Mitrea
With the current day complexification of image manipulation technologies (ranging from colour editing or aspect ratio modifications to AI generated fake news), myriad of numerical representations can be connected to a same semantic visual content. Thus, ensuring trust and authenticity for tracking near-duplicated visual content (i.e., semantically identical yet digitally different contents) becomes challenging from both methodological and technical points of view. Addressing these challenges requires the synergistic combination of methodological solutions stemming from different research fields, while current solutions are heterogeneous and lack interoperability. In this paper, we bring forth an automatic full lifecycle management workflow for visual content assets represented on blockchains. The workflow is supported by a novel architecture seamlessly integrating near-duplicated content detection, Smart Contract automation, and token brokerage. The architecture leverages a load balancing framework and near-duplicated content detection to grant properties natively featured by blockchains (security, trust, and transparency) to the authentication of assets in environments where the same semantic content has various digital representations. Subsequently minted blockchain assets can then be used contingently with other state-of-the-art tools, ensuring interoperability with blockchain working standards. The effectiveness of this workflow is demonstrated through open-source example implementations for the Ethereum and Tezos frameworks, illustrating the benefits this process brings to automatic asset generation and Intellectual Property Rights (IPR) management.
Mayank Raikwar, Shuang Wu, Kristian Gjøsteen
No abstract is available for this record.
Bernhard Garn, Klaus Kieseberg, Ceren Çulha, Marlene Koelbing · 5 authors
No abstract is available for this record.
Chandran Remya
The Merkle trees are a type of structure that provides for the efficient and secure authentication of vast amounts of data and is a key component of blockchain technology. This is used in distribution systems to ensure that data is authenticated effectively. This technology is used by Ethereum and Bitcoin. It is incredibly efficient because it uses hashes instead than whole files. The Merkle tree is an essential component of blockchain technology. It’s an arithmetic data structure made up of hashes of various data blocks that serves as a summary of all transactions in a block. It also enables well-organized and secure content verification in large amounts of data. It also aids in validating the data’s consistency and content. Merkle Trees are used by Bitcoin and Ethereum.
Lin You, Chunjie Guo, Gengran Hu
No abstract is available for this record.
Pierpaolo Loreti, Lorenzo Bracciale, Emanuele Raso, Giuseppe Bianchi · 6 authors
In the past few years, blockchain technology has emerged in numerous smart grid applications, enabling the construction of systems without the need for a trusted third party. Blockchain offers transparency, traceability, and accountability, which lets various energy management system functionalities be executed through smart contracts, such as monitoring, consumption analysis, and intelligent energy adaptation. Nevertheless, revealing sensitive energy consumption information could render users vulnerable to digital and physical assaults. This paper presents a novel method for achieving a dual balance between privacy and transparency, as well as accountability and verifiability. This equilibrium requires the incorporation of cryptographic tools like Secure Multiparty Computation and Verifiable Secret Sharing within the distributed components of a multi-channel blockchain and its associated smart contracts. We corroborate the suggested architecture throughout the entire process of a Demand Response scenario, from the collection of energy data to the ultimate reward. To address our proposal’s constraints, we present countermeasures against accidental crashes and Byzantine behavior while ensuring that the solution remains appropriate for low-performance IoT devices.
Polepaka Sanjeeva, M. Sai Sathwik, G. Sai Prasad, G. Praneeth Reddy · 6 authors
A decentralized and automated online voting system refers to an electronic voting method that leverages Blockchain technology to guarantee both transparency and security. It removes the need for intermediaries, making it more efficient and cost-effective than traditional voting methods. Aim of the paper is to develop an online voting system using Blockchain technology for secure and transparent voting. The proposed approach involves developing a decentralized voting system using Ethereum Blockchain technology. Smart contracts are used to manage the voting process and ensure its integrity. The datasets used in this paper will consist of mock voting data to simulate a real-world scenario. The results and discussions include an analysis of the system’s performance in terms of security, scalability, and usability. Future enhancements include integrating biometric authentication for enhanced security and accessibility.
Mnar Alnaghes, Nickolas Falkner, Hong Shen
No abstract is available for this record.
Alexandru-Cristian Careja, Nicolae Ţăpuş
In recent years, the development of blockchain technology has brought a wide spectrum of potential application scenarios from finance to healthcare, IoT, management and many more. This is because the blockchain, a distributed digital ledger, acts as an environment of trust and transparency. The subject of digital identity is getting more and more attention as it represents more than just replacing physical documents (e.g. ID cards, driver's license) with digital data. It would enable the digitalization and automation of the process of identification as well as protect people against identity theft and fraud. This paper proposes and implements a model for digital identity that relies on blockchain technology and cryptography to ensure the privacy, validity and integrity of personal user data. These are obtained with the help of cryptographic signatures, which are the digital representation of physical signatures or stamps. A set of trusted authorities are in charge of issuing cryptographic signatures and storing them on the blockchain. Through issued cryptographic signatures, the authorities account for the digital identity of the users, similar to how public institutions issue identity documents for their citizens which prove their identity. Using digital identity in multi-participant decision support systems improves the decision-making process through trust, anonymity and interoperability.
Akash Madhusudan, Mahdi Sedaghat, Samarth Tiwari, Kelong Cong · 5 authors
No abstract is available for this record.
Jiahui Huang, Teng Huang, Jiehua Zhang
No abstract is available for this record.
Hoang Viet Anh Le, Quoc Duy Nam Nguyen, Thi Hong Tran, Tadashi Nakano
No abstract is available for this record.
Matteo Loporchio, Anna Bernasconi, Damiano Di Francesco Maesa, Laura Ricci
No abstract is available for this record.
Mohammed Mujeer Ulla, Deepak S. Sakkari
Blockchain is a technology that enables decentralized digital currencies like bitcoin, ethereum, and ripple. It is widely used in many areas such as healthcare, defense, and industrial domains like internet of things for tracking sensor data and detecting duplicate sensor data. Bitcoin is one of the most popular cryptocurrencies due to its market value and use as a medium of exchange. The trustless secure money exchanges have made bitcoins appealing to people. However, the loose possession of bitcoin keys can lead to monetary loss and a decrease in bitcoin users. In this article, we provide an extensive analysis of major privacy and security issues in the Bitcoin blockchain. First, we discuss the security issues in bitcoin, and second, we discuss countermeasures for these bitcoin threats. Third, we provide an added level of security using elliptic curve cryptography on bitcoin multi-signature accounts. Our research helps bitcoin users understand the risks involved in using non-multi-signature accounts compared to multi-signature accounts. The use of elliptic curve cryptography on bitcoin multi-signature accounts also helps to avoid unnecessary expenses such as bitcoin currency rewards to miners.
Kasun Moolika Gedara, Minh Nguyen, Wei Yan
No abstract is available for this record.
Ivan Visconti, Andrea Vitaletti, Marco Zecchini
No abstract is available for this record.
Xiaofeng Jia, Zhe Yu, Jun Shao, Rongxing Lu · 6 authors
With the emergence of countless independent blockchain systems in recent years, cross-chain transactions have attracted considerable attention, and lots of solutions have been put forth by both industry and academia. However, most of the existing solutions suffer from either centralization or scalability issues. To mitigate these issues, in this paper, we propose the concept of cross-chain virtual payment channels, which allows two users in different blockchain systems to conduct limitless off-chain transactions with the help of an intermediate node, hence solving the centralization and scalability issues. Furthermore, as the intermediate node is only involved in the channel open and close operations, it further improves the efficiency of cross-chain transactions, and to a certain extent, it even enhances the privacy of the cross-chain transaction. Meanwhile, we also present the first concrete cross-chain virtual payment channel scheme, which only requires one of the blockchain systems supporting the Turing-complete scripting language. The corresponding detailed security analysis in the Universal Composability framework demonstrates that our proposal holds the Consensus on Open, Update, and Close. Finally, we implement and deploy our cross-chain virtual payment channel scheme on the Ethereum and Bitcoin test networks. The extensive experimental results show that our proposal dramatically improves the efficiency of cross-chain transactions, and the advantage becomes more pronounced as the number of transactions increases.