6 citations · 12 across the 9 of their papers we have counts for
3 papers · 1 filter
SoK: A Stratified Approach to Blockchain Decentralization
Christina Ovezik, Dimitris Karakostas, Aggelos Kiayias
Decentralization has been touted as the principal security advantage which propelled blockchain systems at the forefront of developments in the financial technology space. Its exac…
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…