4 citations · 9 across the 13 of their papers we have counts for
16 papers
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…
Ark: Offchain Transaction Batching in Bitcoin
Pim Keer, Ioannis Alexopoulos, Matteo Maffei +3
Bitcoin is the cryptocurrency with the largest market capitalisation, but its widespread adoption is fundamentally limited by the scalability constraints of its consensus algorithm…
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 Composable Game-Theoretic Framework for Blockchains
Zeta Avarikioti, Georg Fuchsbauer, Pim Keer +2
Blockchains rely on economic incentives to ensure secure and decentralised operation, making incentive compatibility a core design concern. However, protocols are rarely deployed i…
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,…
Optimal Reward Allocation via Proportional Splitting
Lukas Aumayr, Zeta Avarikioti, Dimitris Karakostas +2
Following the publication of Bitcoin's arguably most famous attack, selfish mining, various works have introduced mechanisms to enhance blockchain systems' game-theoretic resilienc…
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…
Lightning Creation Games
Zeta Avarikioti, Tomasz Lizurej, Tomasz Michalak +1
Payment channel networks (PCNs) are a promising solution to the scalability problem of cryptocurrencies. Any two users connected by a payment channel in the network can theoretical…
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…
FnF-BFT: Exploring Performance Limits of BFT Protocols
Zeta Avarikioti, Lioba Heimbach, Roland Schmid +3
We introduce FnF-BFT, a parallel-leader byzantine fault-tolerant state-machine replication protocol for the partially synchronous model with theoretical performance bounds during s…
Ride the Lightning: The Game Theory of Payment Channels
Zeta Avarikioti, Lioba Heimbach, Yuyi Wang +1
Payment channels were introduced to solve various eminent cryptocurrency scalability issues. Multiple payment channels build a network on top of a blockchain, the so-called layer 2…
Divide and Scale: Formalization and Roadmap to Robust Sharding
Georgia Avarikioti, Antoine Desjardins, Eleftherios Kokoris-Kogias +1
Sharding distributed ledgers is a promising on-chain solution for scaling blockchains but lacks formal grounds, nurturing skepticism on whether such complex systems can scale block…