48 citations · 102 across the 19 of their papers we have counts for
6 papers · 1 filter
ACE: Abstract Consensus Encapsulation for Liveness Boosting of State Machine Replication
Alexander Spiegelman, Arik Rinberg
With the emergence of cross-organization attack-prone byzantine fault-tolerant (BFT) systems, so-called Blockchains, providing asynchronous state machine replication (SMR) solution…
Tuning PoW with Hybrid Expenditure
Itay Tsabary, Alexander Spiegelman, Ittay Eyal
Proof of Work (PoW) is a Sybil-deterrence security mechanism. It introduces an external cost to a system by requiring computational effort to perform actions. However, since its in…
Cogsworth: Byzantine View Synchronization
Oded Naor, Mathieu Baudet, Dahlia Malkhi +1
Most methods for Byzantine fault tolerance (BFT) in the partial synchrony setting divide the local state of the nodes into views, and the transition from one view to the next dicta…
FairLedger: A Fair Blockchain Protocol for Financial Institutions
Kfir Lev-Ari, Alexander Spiegelman, Idit Keidar +1
Financial institutions are currently looking into technologies for permissioned blockchains. A major effort in this direction is Hyperledger, an open source project hosted by the L…
Mind the Mining
Guy Goren, Alexander Spiegelman
In this paper we revisit the mining strategies in proof of work based cryptocurrencies and propose two strategies, we call smart and smarter mining, that in many cases strictly dom…
Fast Concurrent Data Sketches
Arik Rinberg, Alexander Spiegelman, Edward Bortnikov +4
Data sketches are approximate succinct summaries of long streams. They are widely used for processing massive amounts of data and answering statistical queries about it in real-tim…