Results 101 to 110 of about 2,377,005 (278)

The Myths of Blockchain Governance

open access: yesCorporate Governance: An International Review, EarlyView.
ABSTRACT Research Question/Issue Blockchain technology promises to revolutionize governance through strong commitments, trustlessness, and transparency. This paper examines how these promises have failed to materialize in practice. Research Findings/Insights Drawing on case evidence from major blockchains, including Bitcoin and Ethereum, I argue that ...
Daniel Ferreira
wiley   +1 more source

Functional Graphs and Their Applications in Generic Attacks on Iterated Hash Constructions

open access: yesIACR Transactions on Symmetric Cryptology, 2018
We provide a survey about generic attacks on cryptographic hash constructions including hash-based message authentication codes and hash combiners. We look into attacks involving iteratively evaluating identical mappings many times.
Zhenzhen Bao, Jian Guo, Lei Wang
doaj   +1 more source

Multi-Dimensional Hash Chains and Application to Micropayment Schemes [PDF]

open access: yes, 2006
One-way hash chains have been used in many micropayment schemes due to their simplicity and efficiency. In this paper we introduce the notion of multi-dimensional hash chains, which is a new generalization of traditional one-way hash chains. We show that this construction has storage-computational complexity of O(logN) per chain element, which is ...
openaire   +3 more sources

Preventing financial ruin: How the West India trade fostered creativity in crisis lending by the Bank of England

open access: yesThe Economic History Review, EarlyView.
Abstract This paper contributes to the understanding of the complex relationship between British economic performance during the Napoleonic wars and the ‘West Indies’, as the Caribbean slave colonies were called. Not only did profits from slave‐based commerce provide financing for the growth of the financial sector, as has been claimed, but the risk of
Carolyn Sissoko, Mina Ishizu
wiley   +1 more source

An Economic Analysis of Difficulty Adjustment Algorithms in Proof‐of‐Work Blockchain Systems

open access: yesInternational Economic Review, EarlyView.
ABSTRACT We study the stability of cryptocurrency systems through difficulty adjustment. Bitcoin's difficulty adjustment algorithm (DAA) exhibits instability when the reward elasticity of the hash rate is high, implying that a sharp price reduction could disrupt the current Bitcoin system.
Shunya Noda   +2 more
wiley   +1 more source

A Framework for Blockchain Interoperability and Runtime Selection

open access: yes, 2019
The suitability of a particular blockchain for a given use case depends mainly on the blockchain's functional and non-functional properties. Such properties may vary over time, and thus, a selected blockchain may become unsuitable for a given use case ...
Borkowski, Michael   +2 more
core  

The application of hash chains and hash structures to cryptography

open access: yes, 2009
In this thesis we study how hash chains and other hash structures can be used in various cryptographic applications. In particular we focus on the applications of entity authentication, signatures and key establishment. We study recursive application of hash functions to create hash chains, hash trees and other hash structures. We collate all these to
openaire   +3 more sources

Exploring collagen fibrillogenesis at the nanoscale: Tip‐enhanced Raman imaging of protofibrils

open access: yesJournal of Microscopy, EarlyView.
Abstract Collagen, a key structural component of the extracellular matrix, assembles through a hierarchical process of fibrillogenesis. Despite extensive studies on mature collagen fibrils, intermediates such as protofibrils remain underexplored, particularly at the nanoscale.
Maria A. Paularie   +5 more
wiley   +1 more source

Intentionality and Attentionality Dynamics in an Institutional Change Process

open access: yesJournal of Management Studies, EarlyView.
Abstract In this article, we explore how actors' intentionality emerges, develops, and co‐evolves with institutional change. Although intentions are essential in shaping institutional change agents' motivations and actions, our understanding of their dynamics is limited and biased by the assumption that intentions are usually identifiable prior to ...
Sofiane Baba, Taïeb Hafsi, Omar Hemissi
wiley   +1 more source

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