activity
20122026
most citedCougaR: Fast and Eclipse-Resilient Dissemination for Blockchain Networks

7 citations · 12 across the 7 of their papers we have counts for

collaborators

9 papers

cs.DC2026

SCRamble: Adaptive Decentralized Overlay Construction for Blockchain Networks

Evangelos Kolyvas, Alexandros Antonov, Spyros Voulgaris

Despite being under development for over 15 years, transaction throughput remains one of the key challenges confronting blockchains, which typically has a cap of a limited number o…

cs.DC2023

SecureCyclon: Dependable Peer Sampling

Alexandros Antonov, Spyros Voulgaris

Overlay management is the cornerstone of building robust and dependable Peer-to-Peer systems. A key component for building such overlays is the peer-sampling service, a mechanism t…

cs.DC2022★ 7 cited

CougaR: Fast and Eclipse-Resilient Dissemination for Blockchain Networks

Evangelos Kolyvas, Spyros Voulgaris

Despite their development for over a decade, a key problem blockchains are still facing is scalability in terms of throughput, typically limited to a few transactions per second. A…

cs.CR2020

OAuth 2.0 authorization using blockchain-based tokens

Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris +2

OAuth 2.0 is the industry-standard protocol for authorization. It facilitates secure service provisioning, as well as secure interoperability among diverse stakeholders. All OAuth…

cs.CR2019

Secure IoT access at scale using blockchains and smart contracts

Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris +2

Blockchains and smart contracts are an emerging, promising technology, that has received considerable attention. We use the blockchain technology, and in particular Ethereum, to im…

cs.NI2019

Interledger Smart Contracts for Decentralized Authorization to Constrained Things

Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou +2

We present models that utilize smart contracts and interledger mechanisms to provide decentralized authorization for constrained IoT devices. The models involve different tradeoffs…

cs.CR2019

OAuth 2.0 meets Blockchain for Authorization in Constrained IoT Environments

Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou +2

We present models for utilizing blockchain and smart contract technology with the widely used OAuth 2.0 open authorization framework to provide delegated authorization for constrai…

cs.DC2018★ 4 cited

Dietcoin: shortcutting the Bitcoin verification process for your smartphone

Davide Frey, Marc X. Makkes, Pierre-Louis Roman +2

Blockchains have a storage scalability issue. Their size is not bounded and they grow indefinitely as time passes. As of August 2017, the Bitcoin blockchain is about 120 GiB big wh…

physics.ins-det2012★ 1 cited

Exploring Design Tradeoffs Of A Distributed Algorithm For Cosmic Ray Event Detection

Suhail Yousaf, Rena Bakhshi, Maarten van Steen +2

Many sensor networks, including large particle detector arrays measuring high-energy cosmic-ray air showers, traditionally rely on centralised trigger algorithms to find spatial an…