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The paper examines decentralized cryptocurrency protocols that are based on the use of internal tokens as identity tools. An analysis of security problems with popular Proof-of-stake consensus protocols is provided. A new protocol,…

Cryptography and Security · Computer Science 2016-01-12 Alexander Chepurnoy

A bitcoin covenant is a mechanism to enforce conditions on how the control of coins will be transferred in the future. This work introduces deleted-key covenants; using pre-signed transactions with secure key deletion. With this, a general…

Cryptography and Security · Computer Science 2020-07-01 Jacob Swambo , Spencer Hommel , Bob McElrath , Bryan Bishop

Blockchain systems run consensus rules as code to agree on the state of the distributed ledger and secure the network. Changing these rules can be risky and challenging. In addition, it can often be controversial and take much effort to…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-02-15 Jakob Svennevik Notland , Mariusz Nowostawski , Jingyue Li

Mining is a central operation of all proof-of-work (PoW) based cryptocurrencies. The vast majority of miners today participate in "mining pools" instead of "solo mining" in order to lower risk and achieve a more steady income. However, this…

Computational Engineering, Finance, and Science · Computer Science 2022-12-15 Panagiotis Chatzigiannis , Foteini Baldimtsi , Igor Griva , Jiasun Li

This study explores the intersection of technological innovation and environmental sustainability in the context of Bitcoin mining. With Bitcoin's growing adoption, concerns surrounding the energy consumption and environmental impact of…

Computers and Society · Computer Science 2024-11-15 Mohammad Ikbal Hossain , Tanja Steigner

The Proof of Efficient Liquidity (PoEL) protocol, designed for specialised Proof of Stake (PoS) consensus-based blockchains that incorporate intrinsic DeFi applications, aims to support sustainable liquidity bootstrapping and network…

General Finance · Quantitative Finance 2024-02-19 Arman Abgaryan , Utkarsh Sharma , Joshua Tobkin

Redactable Blockchain aims to ensure immutability of the data for most of appications, and provide authorized mutability for some specific applications such as removing illegal content from blockchains. However, the existing redactable…

Cryptography and Security · Computer Science 2022-11-17 Bin Luo

This paper proposes a new framework for Citation Content Analysis (CCA), for syntactic and semantic analysis of citation content that can be used to better analyze the rich sociocultural context of research behavior. The framework could be…

Digital Libraries · Computer Science 2012-11-28 Guo Zhang , Ying Ding , Staša Milojević

Many institutions and organizations require nostrification and verification of qualification as a prerequisite for hiring. The idea is to recognize the authenticity of a copy or digital document issued by an institution in a foreign country…

Cryptography and Security · Computer Science 2023-10-16 Monther Aldwairi , Mohamad Badra , Rouba Borghol

Formal Concept Analysis (FCA) is extensively used in knowledge extraction, cognitive concept learning, and data mining. However, its computational demands on large-scale datasets often require outsourcing to external computing services,…

Cryptography and Security · Computer Science 2025-12-01 Qiangqiang Chen , Yunfeng Ke , Shen Li , Jinhai Li

Cryptocurrencies are a type of digital money meant to provide security and anonymity while using cryptography techniques. Although cryptocurrencies represent a breakthrough and provide some important benefits, their usage poses some risks…

General Finance · Quantitative Finance 2024-01-22 Ana Fernández Vilas , Rebeca P. Díaz Redondo , Daniel Couto Cancela , Alejandro Torrado Pazos

We explore the potential of Time-Bin Conference Key Agreement (TB CKA) protocol as a means to achieve consensus among multiple parties. We provide an explanation of the underlying physical implementation, i.e. TB CKA fundamentals and…

Cryptography and Security · Computer Science 2023-09-01 Marta Misiaszek-Schreyner , Miriam Kosik , Mirek Sopek

This paper presents Wrapless -- a lending protocol that enables the collateralization of bitcoins without requiring a trusted wrapping mechanism. The protocol facilitates a "loan channel" on the Bitcoin blockchain, allowing bitcoins to be…

An enormous amount of energy is wasted in Proofof-Work (PoW) mechanisms adopted by popular blockchain applications (e.g., PoW-based cryptocurrencies), because miners must conduct a large amount of computation. Owing to this, one serious…

Cryptography and Security · Computer Science 2020-01-14 Changhao Chenli , Boyang Li , Yiyu Shi , Taeho Jung

The Bitcoin Backbone Protocol [GKL15] is an abstraction of the bitcoin proof-of-work consensus protocol. We use a model-checking tool (UPPAALSMC) to examine the concrete security of proof-ofwork consensus by varying protocol parameters and…

Cryptography and Security · Computer Science 2020-07-20 Max DiGiacomo-Castillo , Yiyun Liang , Advay Pal , John C. Mitchell

We introduce Auditable Proof-of-Work (APoW), a novel proof-of-work (PoW) construction inspired by Hashcash-style nonce searching, which enables the auditing of other miners' work through accountable re-scanning of the nonce space. The…

Cryptography and Security · Computer Science 2026-01-09 Sergio Demian Lerner

Since the introduction of Bitcoin in 2008, blockchain technology has garnered widespread attention. Scholars from various research fields, countries, and institutions have published a significant number of papers on this subject. However,…

Digital Libraries · Computer Science 2025-04-21 Lingfeng Bao , Jiameng Yang , Xiaohu Yang , Chunming Rong

The need for scholarly open data is ever increasing. While there are large repositories of open access articles and free publication indexes, there are still a few examples of free citation networks and their coverage is partial. One of the…

Digital Libraries · Computer Science 2019-02-12 Angelo Di Iorio , Silvio Peroni , Francesco Poggi

Formalization of mathematics is the process of digitizing mathematical knowledge, which allows for formal proof verification as well as efficient semantic searches. Given the large and ever-increasing gap between the set of formalized and…

Multiagent Systems · Computer Science 2021-11-23 Jin Xing Lim , Barnabé Monnot , Shaowei Lin , Georgios Piliouras

In most High Performance Computing (HPC) projects nowadays, there is a lot of data obtained from different sources, depending on the project's objectives. Some of that data is very huge in terms of size, so copying such data sometimes is an…

Cryptography and Security · Computer Science 2026-01-21 Gian Sebastian Mier Bello , Alexander Martinez Mendez , Carlos J. Barrios H. , Robinson Rivas , Luis A. Núñez