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Current blockchain protocols (e.g., Proof-of-Work and Proof-of-Stake) secure the ledger yet cannot measure validator trustworthiness, allowing subtle misconduct that is especially damaging in decentralized-finance (DeFi) settings. We…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-06-30 Ailiya Borjigin , Wei Zhou , Cong He

Bitcoin is a popular cryptocurrency that records alltransactions in a distributed append-only public ledger calledblockchain. The security of Bitcoin heavily relies on the incentive-compatible proof-of-work (PoW) based distributed consensus…

Cryptography and Security · Computer Science 2018-06-05 Mauro Conti , Sandeep Kumar E , Chhagan Lal , Sushmita Ruj

We introduce a new permissionless blockchain architecture called ABC. ABC is completely asynchronous, and does rely on neither randomness nor proof-of-work. ABC can be parallelized, and transactions have finality within one round trip of…

Cryptography and Security · Computer Science 2020-07-21 Jakub Sliwinski , Roger Wattenhofer

In this paper, I propose a new concept for understanding the role of algorithms in daily life: algorithmic authority. Algorithmic authority is the legitimate power of algorithms to direct human action and to impact which information is…

Human-Computer Interaction · Computer Science 2022-01-19 Caitlin Lustig

Blockchain introduces decentralized trust in peer-to-peer networks, advancing security and democratizing systems. Yet, a unified definition for decentralization remains elusive. Our Systematization of Knowledge (SoK) seeks to bridge this…

General Economics · Economics 2023-08-21 Luyao Zhang , Xinshi Ma , Yulin Liu

Proof-of-Work (PoW) is a popular blockchain consensus algorithm that is used in cryptocurrencies like Bitcoin in which hashing operations are repeated until the resulting hash has certain properties. This approach uses lots of computational…

Cryptography and Security · Computer Science 2022-09-09 Felix Hoffmann

Decentralization is widely recognized as a crucial characteristic of blockchains that enables them to resist malicious attacks such as the 51% attack and the takeover attack. Prior research has primarily examined decentralization in…

Cryptography and Security · Computer Science 2023-06-12 Chao Li , Balaji Palanisamy , Runhua Xu , Li Duan

With the rapid growth of hyperconnected devices and decentralized data architectures, safeguarding Internet of Things (IoT) transactions is becoming increasingly challenging. Blockchain presents a promising solution, yet its effectiveness…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-11-14 Sokratis Vavilis , Harris Niavis , Konstantinos Loupos

We discuss numerous justifications for why crypto-currencies would be highly conducive for the smooth functioning of today's society. We provide several comparisons between cryptocurrencies issued by blockchain projects, crypto, and…

General Economics · Economics 2023-07-18 Ravi Kashyap

The blockchain initially gained traction in 2008 as the technology underlying bitcoin, but now has been employed in a diverse range of applications and created a global market worth over $150B as of 2017. What distinguishes blockchains from…

Cryptography and Security · Computer Science 2017-11-15 Shehar Bano , Alberto Sonnino , Mustafa Al-Bassam , Sarah Azouvi , Patrick McCorry , Sarah Meiklejohn , George Danezis

Blockchains revolutionized centralized sectors like banking and finance by promoting decentralization and transparency. In a blockchain, information is transmitted through transactions issued by participants or applications. Miners…

Cryptography and Security · Computer Science 2024-05-30 Johnnatan Messias Peixoto Afonso

Cryptocurrency is a novel exploration of a form of currency that proposes a decentralized electronic payment scheme based on blockchain technology and cryptographic theory. While cryptocurrency has the security characteristics of being…

Cryptography and Security · Computer Science 2025-03-31 Zekai Liu , Xiaoqi Li

This paper investigates whether Bittensor can be considered the Bitcoin of decentralized Artificial Intelligence by directly comparing its tokenomics, decentralization properties, consensus mechanism, and incentive structure against those…

Cryptography and Security · Computer Science 2025-07-08 Elizabeth Lui , Jiahao Sun

The world of cryptocurrency is not transparent enough though it was established for innate transparent tracking of capital flows. The most contributing factor is the violation of securities laws and scam in Initial Coin Offering (ICO) which…

General Finance · Quantitative Finance 2018-09-11 Sheikh Rabiul Islam

We present an analysis of the Proof-of-Work consensus algorithm, used on the Bitcoin blockchain, using a Mean Field Game framework. Using a master equation, we provide an equilibrium characterization of the total computational power devoted…

Theoretical Economics · Economics 2020-04-21 Charles Bertucci , Louis Bertucci , Jean-Michel Lasry , Pierre-Louis Lions

This paper presents a comprehensive comparative analysis of two dominant blockchain consensus mechanisms, Proof of Work (PoW) and Proof of Stake (PoS), evaluated across seven critical metrics: energy use, security, transaction speed,…

Cryptography and Security · Computer Science 2025-11-24 Kaeli Andrews , Linh B. Ngo , Md Amiruzzaman

Bitcoin and Ethereum are novel mechanisms for decentralizing the concept of money and computation. Extending decentralization to the human identity concept, we can think of using blockchain for creating a list of verified human identities…

Cryptography and Security · Computer Science 2018-06-21 MohammadJavad Hajialikhani , MohammadMahdi Jahanara

To address the large amount of energy wasted by blockchains, we propose a decentralized consensus protocol for blockchains in which the computation can be used to search for good approximate solutions to any optimization problem. Our…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-12-03 Naoki Shibata

Blockchain is an essentially distributed database recording all transactions or digital events among participating parties. Each transaction in the records is approved and verified by consensus of the participants in the system that…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-07-07 Jie You

Authcoin is an alternative approach to the commonly used public key infrastructures such as central authorities and the PGP web of trust. It combines a challenge response-based validation and authentication process for domains,…

Cryptography and Security · Computer Science 2016-09-19 Benjamin Leiding , Clemens H. Cap , Thomas Mundt , Samaneh Rashidibajgan