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Alexander Russell

Senior Research Fellow

Academic Research

USA

The Generals’ Scuttlebutt: Byzantine-Resilient Gossip Protocols

Sandro Coretti,Aggelos Kiayias,Cristopher Moore,Alexander Russell

May 2022, ePrint Archive

UNIVERSAL COMPOSITION

On UC-Secure Range Extension and Batch Verification for ECVRF

Christian Badertscher,Peter Gaži,Iñigo Querejeta-Azurmendi,Alexander Russell

December 2021, IOHK

Efficient Random Beacons with Adaptive Security for Ungrindable Blockchains

Aggelos Kiayias,Cristopher Moore,Saad Quader,Alexander Russell

December 2021, ePrint Archive

PSEUDORANDOMNESS

Ouroboros Chronos: Permissionless Clock Synchronization via Proof-of-Stake

Christian Badertscher,Peter Gaži,Aggelos Kiayias,Alexander Russell,Vassilis Zikas

October 2021, Eurocrypt '21

BLOCKCHAIN PROOF-OF-STAKE

Ofelimos: Combinatorial Optimization via Proof-of-Useful-Work: A Provably Secure Blockchain Protocol

Matthias Fitzi,Aggelos Kiayias,Georgios Panagiotakos,Alexander Russell

October 2021, ePrint Archive

Practical Settlement Bounds for Proof-of-Work Blockchains

Peter Gaži,Ling Ren,Alexander Russell

June 2021, ePrint Archive

PROOF-OF-WORK

Cardano Disaster Recovery Plan

Christian Badertscher,Nicholas Clarke,Jared Corduan,Duncan Coutts,Peter Gaži,Philipp Kant,Aggelos Kiayias,Alexander Russell

May 2021, IOHK

CARDANO

Hydra: Fast Isomorphic State Channels

Manuel Chakravarty,Sandro Coretti,Matthias Fitzi,Peter Gaži,Philipp Kant,Aggelos Kiayias,Alexander Russell

March 2021, Financial Cryptography 2021

LAYER-TWO

Tight Consistency Bounds for Bitcoin

Peter Gaži,Aggelos Kiayias,Alexander Russell

November 2020, ACM CCS '20

BITCOIN PROOF-OF-STAKE PROOF-OF-WORK

Ledger Combiners for Fast Settlement

Matthias Fitzi,Peter Gaži,Aggelos Kiayias,Alexander Russell

November 2020, TCC '20

LEDGER

Consistency of Proof-of-Stake Blockchains with Concurrent Honest Slot Leaders

Aggelos Kiayias,Saad Quader,Alexander Russell

November 2020, ICDCS '20

BLOCKCHAIN PROOF-OF-STAKE

Consensus Redux: Distributed Ledgers in the Face of Adversarial Supremacy

Christian Badertscher,Peter Gaži,Aggelos Kiayias,Alexander Russell,Vassilis Zikas

August 2020, ePrint Archive

PROOF-OF-STAKE PROOF-OF-WORK

The Combinatorics of the Longest-Chain Rule: Linear Consistency for Proof-of-Stake Blockchains

Erica Blum,Aggelos Kiayias,Cristopher Moore,Saad Quader,Alexander Russell

January 2020, SODA20

BLOCKCHAIN PROOF-OF-STAKE

Proof-of-Stake Blockchain Protocols with Near-Optimal Throughput

Matthias Fitzi,Peter Gaži,Aggelos Kiayias,Alexander Russell

January 2020, ePrint Archive

PROOF-OF-STAKE

Parallel Chains: Improving Throughput and Latency of Blockchain Protocols via Parallel Composition

Matthias Fitzi,Peter Gaži,Aggelos Kiayias,Alexander Russell

November 2018, EPrint Archive

BLOCKCHAIN DISTRIBUTED PROTOCOL SCALABILITY

Ouroboros-BFT: A Simple Byzantine Fault Tolerant Consensus Protocol

Aggelos Kiayias,Alexander Russell

October 2018, EPrint Archive

BLOCKCHAIN CONSENSUS DISTRIBUTED PROTOCOL

Stake-Bleeding Attacks on Proof-of-Stake Blockchains

Peter Gaži,Aggelos Kiayias,Alexander Russell

June 2018, Crypto Valley'18

ATTACK DISTRIBUTED PROOF-OF-STAKE

Ouroboros Praos: An adaptively-secure, semi-synchronous proof-of-stake protocol

Bernardo David,Peter Gaži,Aggelos Kiayias,Alexander Russell

April 2018, EUROCRYPT 2018

CONSENSUS CRYPTOCURRENCY PROOF-OF-STAKE

Ouroboros: A Provably Secure Proof-of-Stake Blockchain Protocol

Aggelos Kiayias,Alexander Russell,Bernardo David,Roman Oliynykov

August 2017, CRYPTO 2017 (ePrint Archive)

BLOCKCHAIN CRYPTOCURRENCY PROOF-OF-STAKE