6 papers
Ambulance: saving BFT through racing
Neil Giridharan, Shubham Mishra, Lorenzo Alvisi +5
Today's practical Byzantine Fault Tolerant (BFT) state machine replication deployments are vulnerable to slowdowns. The main culprit is timeouts. Aggressive timeouts spuriously tri…
Fast Deterministically Safe Proof-of-Work Consensus
Ali Farahbakhsh, Giuliano Losa, Youer Pu +2
Permissionless blockchains achieve consensus while allowing unknown nodes to join and leave the system at any time. They typically come in two flavors: proof of work (PoW) and proo…
Ordered Consensus with Equal Opportunity
Yunhao Zhang, Haobin Ni, Soumya Basu +6
The specification of state machine replication (SMR) has no requirement on the final total order of commands. In blockchains based on SMR, however, order matters, since different o…
Autobahn: Seamless high speed BFT
Neil Giridharan, Florian Suri-Payer, Ittai Abraham +2
Today's practical, high performance Byzantine Fault Tolerant (BFT) consensus protocols operate in the partial synchrony model. However, existing protocols are inefficient when depl…
On Fair Ordering and Differential Privacy
Shir Cohen, Neel Basu, Soumya Basu +1
In blockchain systems, fair transaction ordering is crucial for a trusted and regulation-compliant economic ecosystem. Unlike traditional State Machine Replication (SMR) systems, w…
Weaponizing Disinformation Against Critical Infrastructures
Lorenzo Alvisi, John Bianchi, Sara Tibidò +1
For nearly a decade, disinformation has dominated social debates, with its harmful impacts growing more evident. Episodes like the January 6 United States Capitol attack and the Ro…