Results 21 to 30 of about 6,344 (284)

The Blockchain Oracle Problem in Decentralized Finance—A Multivocal Approach

Applied Sciences, 2021
Decentralized Finance (DeFi) takes the promise of blockchain a step further and aims to transform traditional financial products into trustless and transparent protocols that run without involving intermediaries. Similar to how 2017 was the year of ICOs,
Giulio Caldarelli, Joshua Ellul
doaj   +1 more source

MT $$^2$$ 2 AD: multi-layer temporal transaction anomaly detection in ethereum networks with GNN

Complex & Intelligent Systems, 2023
In recent years, a surge of criminal activities with cross-cryptocurrency trades have emerged in Ethereum, the second-largest public blockchain platform. Most of the existing anomaly detection methods utilize the traditional machine learning with feature
Beibei Han, Yingmei Wei, Qingyong Wang, Francesco Maria De Collibus, Claudio J. Tessone   +4 more
doaj   +1 more source

Formalizing and Implementing Distributed Ledger Objects [PDF]

ACM SIGACT News, 2018
Despite the hype about blockchains and distributed ledgers, formal abstractions of these objects are scarce1. To face this issue, in this paper we provide a proper formulation of a distributed ledger object. In brief, we de ne a ledger object as a sequence of records, and we provide the operations and the properties that such an object should support ...
Fernández Anta, Antonio, Georgiou, Chryssis, Konwar, Kishori, Nicolaou, Nicolas, Fernández Anta, Antonio, Georgiou, Chryssis, Konwar, Kishori, Nicolaou, Nicolas   +7 more
openaire   +9 more sources

Stochastic Modelling of Selfish Mining in Proof-of-Work Protocols

Journal of Cybersecurity and Privacy, 2022
In blockchain-based systems whose consensus mechanisms resort to Proof-of-Work (PoW), it is expected that a miner’s share of total block revenue is proportional to their share of hashing power with respect to the rest of the network.
Caspar Schwarz-Schilling, Sheng-Nan Li, Claudio J. Tessone   +2 more
doaj   +1 more source

A Taxonomy for Distributed Ledger Analytics [PDF]

Computer, 2021
Over the past decade, blockchains and distributed ledger technologies have rapidly evolved. With increasing transaction volumes and the proliferation of decentralized applications based on smart contracts, a need for a deeper understanding arises. We structure the field that we term distributed ledger analytics.
Friedhelm Victor, Peter Ruppel, Axel Kupper   +2 more
openaire   +2 more sources

Disorder unleashes panic in bitcoin dynamics

Journal of Physics: Complexity, 2023
The behaviour of Bitcoin owners is reflected in the structure and the number of bitcoin transactions encoded in the Blockchain. Likewise, the behaviour of Bitcoin traders is reflected in the formation of bullish and bearish trends in the crypto market ...
Marco Alberto Javarone, Gabriele Di Antonio, Gianni Valerio Vinci, Raffaele Cristodaro, Claudio J Tessone, Luciano Pietronero   +5 more
doaj   +1 more source

Consensus formation on heterogeneous networks

EPJ Data Science, 2022
Reaching consensus—a macroscopic state where the system constituents display the same microscopic state—is a necessity in multiple complex socio-technical and techno-economic systems: their correct functioning ultimately depends on it.
Edoardo Fadda, Junda He, Claudio J. Tessone, Paolo Barucca   +3 more
doaj   +1 more source

User privacy prevention model using supervised federated learning‐based block chain approach for internet of Medical Things

CAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract This research focuses on addressing the privacy issues in healthcare advancement monitoring with the rapid establishment of the decentralised communication system in the Internet of Medical Things (IoMT). An integrated blockchain homomorphic encryption standard with an in‐build supervised learning‐based smart contract is designed to improvise ...
Chandramohan Dhasarathan, Mohammad Kamrul Hasan, Shayla Islam, Salwani Abdullah, Shailesh Khapre, Dalbir Singh, Abdulaziz A. Alsulami, Ali Alqahtani   +7 more
wiley   +1 more source

Modeling of Distributed Ledger Deployment View [PDF]

International Journal of Electronics and Telecommunications, 2020
The Distributed Ledger Technology (DLT) is a peer-to-peer model of sharing data among collaborating parties in a decentralized manner. An example of DLT is a blockchain where data form blocks in an append-only chain.
Tomasz Górski, Jakub Bednarski
doaj   +1 more source

Application of Distributed Ledger Technology in Distribution Networks

Proceedings of the IEEE, 2022
In the transition to a society with net-zero carbon emissions, high penetration of distributed renewable power generation and large-scale electrification of transportation and heat are driving the conventional distribution network operators (DNOs) to evolve into distribution system operators (DSOs) that manage distribution networks in a more active and
Yue Zhou, Andrei Nicolas Manea, Weiqi Hua, Jianzhong Wu, Wei Zhou, James Yu, Saifur Rahman   +6 more
openaire   +1 more source