91 citations · 212 across the 18 of their papers we have counts for
12 papers · 1 filter
A Secure Sequencer and Data Availability Committee for Rollups (Extended Version)
Margarita Capretto, Martín Ceresa, Antonio Fernández Anta +2
Blockchains face a scalability limitation, partly due to the throughput limitations of consensus protocols, especially when aiming to obtain a high degree of decentralization. Laye…
Lite-PoT: Practical Powers-of-Tau Setup Ceremony
Lucien K. L. Ng, Pedro Moreno-Sanchez, Mohsen Minaei +3
Zero-Knowledge Succinct Non-Interactive Argument of Knowledge (zk-SNARK) schemes have gained significant adoption in privacy-preserving applications, decentralized systems (e.g., b…
DTL: Data Tumbling Layer. A Composable Unlinkability for Smart Contracts
Mohsen Minaei, Pedro Moreno-Sanchez, Zhiyong Fang +5
We propose Data Tumbling Layer (DTL), a cryptographic scheme for non-interactive data tumbling. The core concept is to enable users to commit to specific data and subsequently re-u…
Atomic Transfer Graphs: Secure-by-design Protocols for Heterogeneous Blockchain Ecosystems
Stephan Dübler, Federico Badaloni, Pedro Moreno-Sanchez +1
The heterogeneity of the blockchain landscape has motivated the design of blockchain protocols tailored to specific blockchains and applications that, hence, require custom securit…
BitMLx: Secure Cross-chain Smart Contracts For Bitcoin-style Cryptocurrencies
Federico Badaloni, Sebastian Holler, Chrysoula Oikonomou +2
A smart contract is an interactive program that governs funds in the realm of a single cryptocurrency. Yet, the many existing cryptocurrencies have spurred the design of cross-chai…
Fast and Secure Decentralized Optimistic Rollups Using Setchain
Margarita Capretto, Martín Ceresa, Antonio Fernández Anta +2
Modern blockchains face a scalability challenge due to the intrinsic throughput limitations of consensus protocols. Layer 2 optimistic rollups (L2) are a faster alternative that of…
Watch Your Back: Identifying Cybercrime Financial Relationships in Bitcoin through Back-and-Forth Exploration
Gibran Gomez, Pedro Moreno-Sanchez, Juan Caballero
Cybercriminals often leverage Bitcoin for their illicit activities. In this work, we propose back-and-forth exploration, a novel automated Bitcoin transaction tracing technique to…
Adoption and Actual Privacy of Decentralized CoinJoin Implementations in Bitcoin
Rainer Stütz, Johann Stockinger, Bernhard Haslhofer +2
We present a first measurement study on the adoption and actual privacy of two popular decentralized CoinJoin implementations, Wasabi and Samourai, in the broader Bitcoin ecosystem…
Optimizing Virtual Payment Channel Establishment in the Face of On-Path Adversaries
Lukas Aumayr, Esra Ceylan, Yannik Kopyciok +4
Payment channel networks (PCNs) are among the most promising solutions to the scalability issues in permissionless blockchains, by allowing parties to pay each other off-chain thro…
Cross-Layer Deanonymization Methods in the Lightning Protocol
Matteo Romiti, Friedhelm Victor, Pedro Moreno-Sanchez +3
Bitcoin (BTC) pseudonyms (layer 1) can effectively be deanonymized using heuristic clustering techniques. However, while performing transactions off-chain (layer 2) in the Lightnin…
Concurrency and Privacy with Payment-Channel Networks
Giulio Malavolta, Pedro Moreno-Sanchez, Aniket Kate +2
Permissionless blockchains protocols such as Bitcoin are inherently limited in transaction throughput and latency. Current efforts to address this key issue focus on off-chain paym…
Settling Payments Fast and Private: Efficient Decentralized Routing for Path-Based Transactions
Stefanie Roos, Pedro Moreno-Sanchez, Aniket Kate +1
Path-based transaction (PBT) networks, which settle payments from one user to another via a path of intermediaries, are a growing area of research. They overcome the scalability an…