4 citations · 9 across the 13 of their papers we have counts for
9 papers · 1 filter
Slow and Steady: Preventing MEV with Verifiable Delays
Zeta Avarikioti, Dimitris Karakostas, Karl Kreder +1
Our work presents a defense mechanism against Maximal Extractable Value (MEV) opportunities in distributed ledgers. The mechanism relies on the idea of enforcing a verifiable delay…
Wonderboom -- Efficient, and Censorship-Resilient Signature Aggregation for Million Scale Consensus
Zeta Avarikioti, Ray Neiheiser, Krzysztof Pietrzak +1
Over the last years, Ethereum has evolved into a public platform that safeguards the savings of hundreds of millions of people and secures more than $650 billion in assets, placing…
Calyx: Privacy-Preserving Multi-Token Optimistic-Rollup Protocol
Dominik Apel, Zeta Avarikioti, Matteo Maffei +1
Rollup protocols have recently received significant attention as a promising class of Layer 2 (L2) scalability solutions. By utilizing the Layer 1 (L1) blockchain solely as a bulle…
A Security Framework for General Blockchain Layer 2 Protocols
Zeta Avarikioti, Matteo Maffei, Yuheng Wang
Layer 2 (L2) protocols, payment channels, sidechains, and rollups, are central to blockchain scalability, enabling off-chain execution while preserving on-chain security. Despite g…
CoBRA: A Universal Strategyproof Confirmation Protocol for Quorum-based Proof-of-Stake Blockchains
Zeta Avarikioti, Eleftherios Kokoris Kogias, Ray Neiheiser +1
The security of many Proof-of-Stake (PoS) payment systems relies on quorum-based State Machine Replication (SMR) protocols. While classical analyses assume purely Byzantine faults,…
Thunderdome: Timelock-Free Rationally-Secure Virtual Channels
Zeta Avarikioti, Yuheng Wang, Yuyi Wang
Payment channel networks (PCNs) offer a promising solution to address the limited transaction throughput of deployed blockchains. However, several attacks have recently been propos…
Bribe & Fork: Cheap Bribing Attacks via Forking Threat
Zeta Avarikioti, Paweł Kędzior, Tomasz Lizurej +1
In this work, we reexamine the vulnerability of Payment Channel Networks (PCNs) to bribing attacks, where an adversary incentivizes blockchain miners to deliberately ignore a speci…
Wiser: Increasing Throughput in Payment Channel Networks with Transaction Aggregation
Samarth Tiwari, Michelle Yeo, Zeta Avarikioti +3
Payment channel networks (PCNs) are one of the most prominent solutions to the limited transaction throughput of blockchains. Nevertheless, PCNs suffer themselves from a throughput…
HIDE & SEEK: Privacy-Preserving Rebalancing on Payment Channel Networks
Zeta Avarikioti, Krzysztof Pietrzak, Iosif Salem +3
Payment channels effectively move the transaction load off-chain thereby successfully addressing the inherent scalability problem most cryptocurrencies face. A major drawback of pa…