7 papers
Bitcoin-IPC: Scaling Bitcoin with a Network of Proof-of-Stake Subnets
Marko VukoliÄ, Orestis Alpos, Jakov Mitrovski +3
This paper introduces Bitcoin-IPC, a protocol that scales Bitcoin through a network of permissionless, interconnected, programmable Proof-of-Stake (PoS) Layer-2 chains, called subn…
Censorship-Resistant Sealed-Bid Auctions on Blockchains
Orestis Alpos, Lioba Heimbach, Kartik Nayak +1
Auctions are now central to blockchain markets, settling NFT sales, token launches, DeFi liquidations, and arbitrage opportunities. Each on-chain bid is a public transaction whose…
Monotone Erasure Codes
Vivien Bammert, Annalisa Cimatti, Orestis Alpos +2
Erasure codes are a critical component in reliable storage systems today, and many blockchain systems use consensus protocols that involve erasure codes to reduce their communicati…
Pod: An Optimal-Latency, Censorship-Free, and Accountable Generalized Consensus Layer
Orestis Alpos, Bernardo David, Jakov Mitrovski +2
This work addresses the inherent issues of high latency in blockchains and low scalability in traditional consensus protocols. We present pod, a novel notion of consensus whose fir…
An overview of the efficiency and censorship-resistance guarantees of widely-used consensus protocols
Orestis Alpos, Bernardo David, Nikolas Kamarinakis +1
Censorship resistance with short-term inclusion guarantees is an important feature of decentralized systems, missing from many state-of-the-art and even deployed consensus protocol…
Formalization and security analysis of the Bridgeless protocol
Orestis Alpos, Oleg Fomenko, Dimitris Karakostas +2
This paper formalizes the proves the security of the Bridgeless protocol, a protocol able to bridge tokens between various chains. The Bridgeless protocol is run by a set of valida…