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Blockchain for E-Governance and Tracing Fake News on Social Media
Published in Keshav Kaushik, Shubham Tayal, Susheela Dahiya, Ayodeji Olalekan Salau, Sustainable and Advanced Applications of Blockchain in Smart Computational Technologies, 2023
Susheela Dahiya, Keshav Kaushik
Fake media, sometimes known as the Web of Dishonest Journalism, has appeared in a number of spheres of information society, particularly politics, media, and social media. Because the media’s reputation is often undermined, drastic steps are essential to avoid future erosion. Considering today’s Artificial Intelligence and Deep Learning breakthroughs, Internet of Fleet Management Things (IoFMT) is becoming increasingly widespread; yet, such learning concessions may be severely constrained. It is vital to offer proof of authenticity in order to identify provenance and integrity of any digital output. A blockchain is a distributed ledger technology. In order to help with the issue, a potential new decentralized safety infrastructure has been presented. The technological component of false media is critical in a data-driven world. Nevertheless, various blockchain-based authentication systems have been proposed. The bulk of available research, on the other hand, is based on erroneous post-incident views.
Secure Digital Health Data Management in Internet of Things Using Blockchain and Machine Learning
Published in Chinmay Chakraborty, Digital Health Transformation with Blockchain and Artificial Intelligence, 2022
Susmit Das, Sreyashi Karmakar, Himadri Nath Saha
Also, the requirement of external third-party verification can cause substantial delays to the medical data preservation process due to common issues like server outages and delayed wait or time-out mechanisms, which has the potential to cause significant issues for the health providers involved especially when multiple end-users are involved. This is where blockchain technology can revolutionize existing systems. It is a distributed ledger technology, the peer-to-peer network of computers termed nodes ensure immutability and not by any centralized authority in order to avoid the risks of a central failure point, it keeps track of all transactions and activities happening throughout the blockchain network. A blockchain consists of data records arranged in order in a block structure that contains transactions secured by complex cryptographic hash algorithms in blocks and uses the hash of the preceding block as the key for every succeeding block. Each block is connected and maintained in the blockchain network.
Blockchain and Distributed Ledger System
Published in Neeraj Kumar, N. Gayathri, Md. Arafatur Rahman, B. Balamurugan, Blockchain, Big Data and Machine Learning, 2020
Yogesh Sharma, B. Balamurugan, Firoz Khan
A distributed ledger technology, also known as DLT, is a technology based on a peer-to-peer network which is very secure. A distributed ledger is also known as a shared ledger or distributed ledger technology. A distributed ledger is a kind of database of replicated, shared data that is geographically spread across several numbers of nodes, sites, countries, or institutions. There is no central authority present in a distributed ledger system and each node present updates their own database independently. A distributed ledger system works on a peer-to-peer network with some consensus algorithm that ensures the replication process between the nodes. A distributed ledger system can be categorized as either a permissioned or permissionless ledger depending upon whether the users of the distributed ledgers can be accessed by anyone or only some desired participating node can access the ledger. The technology came into existence with the concept of cryptocurrencies like Bitcoin but the technology has moved three-fold and now the technology is being used in many use cases and many organizations are investing huge amounts in distributed ledger technology as it is cost saving measure and, in some way, or other reduce the risk involved in their operations.
SME Performance Through Blockchain Technologies
Published in Journal of Computer Information Systems, 2023
Sandip Rakshit, Anand Jeyaraj, Tripti Paul
Blockchain is a distributed ledger for storing and monitoring a permanent and tamper-proof archive of transactional records.36 A distributed ledger is a particular form of database shared, mirrored, synchronized, and managed by the members of a decentralized network.7,19 Blockchain is considered as a single center of evidence with no single point of failure, a decentralized distributed ledger of information that is shared by all parties involved.37 It can be thought of as a string of blocks formed on top of the other.10,38 Any approved person can review data stored on the chain, which cannot be removed or tampered with, and can only be modified after a thorough validation by the network consensus algorithms. Blockchain can be public, proprietary, or permission-based concerning who has access to it and who can run a node.12,39 It contains the previous block’s secret key, a time-stamp, and transaction details. It is difficult to tamper with blocks attached to the chain because the ledger is distributed and accessed by all users, who constantly update and synchronize it.40 When a new transaction is submitted to the ledger, it is encrypted and checked by other users on the network. Because the Blockchain is a linked list with information and a hash pointer to the previous block, it forms a chain. This technique is what makes Blockchain so precise and innovative.41
Exploiting European GNSS and Ethereum in location proof systems
Published in International Journal of Digital Earth, 2022
The second topic we introduce is the blockchain technology. It was first proposed by Nakamoto (2008) with the name of Bitcoin. From the beginning, it was discovered and deepened as a disruptive technology (Swan 2015) with a huge potential impact on several digital economy sectors. A blockchain is a distributed ledger able to generate and maintain digital transactions shared among users. Inside the blockchain, users trust the distributed system, without trusting a central authority or a third-party intermediary. Indeed, the blockchain consensus algorithm (Mingxiao et al. 2017) guarantees that every transaction has to be confirmed and validated by blockchain participants. These transactions are stored inside blocks and contain information on the recipient's public address, transaction data, and the cryptographic signature, which guarantees the integrity and authenticity of the transaction itself. Furthermore, every block is linked to the chain by its header where the previous block's hash and a timestamp are embedded.
Perceived usefulness, ease of use and user acceptance of blockchain technology for digital transactions – insights from user-generated content on Twitter
Published in Enterprise Information Systems, 2019
Purva Grover, Arpan Kumar Kar, Marijn Janssen, P. Vigneswara Ilavarasan
Distributed ledgers allow content to be written to the blocks if – and only if – the data gets consensus from other users present in the network. Blockchain supports various consensus algorithms, such as proof of work; proof of stake; proof of activity; proof of burn; proof of capacity; and proof of elapsed time (Coindesk 2017). Cryptographic methods can be used for encrypting, authorising and linking blocks (Magazzeni, McBurney, and Nash 2017). The shared ledger is stored locally on each of the participants’ machines (Tai, Sun, and Guo 2016). Changes in the block require consensus in a distributed multi–stakeholder network for updating. Once a record is written in the database, it is impossible to erase (tamper resistant).