5 citations · 11 across the 7 of their papers we have counts for
7 papers
SoK: Measuring Blockchain Decentralization
Christina Ovezik, Dimitris Karakostas, Mary Milad +2
In the context of blockchain systems, the importance of decentralization is undermined by the lack of a widely accepted methodology to measure it. To address this gap, we set out a…
Balancing Participation and Decentralization in Proof-of-Stake Cryptocurrencies
Aggelos Kiayias, Elias Koutsoupias, Francisco Marmolejo-Cossio +1
Proof-of-stake blockchain protocols have emerged as a compelling paradigm for organizing distributed ledger systems. In proof-of-stake (PoS), a subset of stakeholders participate i…
Tiered Mechanisms for Blockchain Transaction Fees
Aggelos Kiayias, Elias Koutsoupias, Philip Lazos +1
Blockchain systems come with the promise of being inclusive for a variety of decentralized applications (DApps) that can serve different purposes and have different urgency require…
Optimal Bootstrapping of PoW Blockchains
Ranvir Rana, Dimitris Karakostas, Sreeram Kannan +2
Proof of Work (PoW) blockchains are susceptible to adversarial majority mining attacks in the early stages due to incipient participation and corresponding low net hash power. Boot…
Blockchain Nash Dynamics and the Pursuit of Compliance
Dimitris Karakostas, Aggelos Kiayias, Thomas Zacharias
We study Nash-dynamics in the context of blockchain protocols. We introduce a formal model, within which one can assess whether the Nash dynamics can lead utility-maximizing partic…
Decentralizing Information Technology: The Advent of Resource Based Systems
Aggelos Kiayias
The growth of the Bitcoin network during the first decade of its operation to a global scale system is a singular event in the deployment of Information Technology systems. Can thi…