Introduction Ring Signatures Overview The main idea behind ring signatures is that a user $u$, who is part of a user group $$R =...
During my initial research period at UAB, I began developing a replica of the real Bitcoin mainnet. While this might sound unusual—especially given the...
📊 Bitcoin’s Decentralization: What the Data Really Says Bitcoin is intended to be a decentralized, trustless peer-to-peer currency. But how decentralized is the network, really, 15...
The Lightning Network (LN) is a dynamic and constantly evolving second-layer scaling solution for Bitcoin, designed to enable fast, low-cost transactions. Recently, the network...
By Ghazaleh Keshavarzkalhori, Cristina Perez-Sola, Guillermo Navarro-Arribas, Jordi Herrera-Joancomartí, and Habib Yajam In a world where data privacy is more important than ever, federated learning has...
We are currently conducting research on wallet fingerprinting in Bitcoin. In this work, we delve on the way that several Bitcoin wallets construct and...
Some time ago, we proposed a mechanism to address a long-standing issue in Bitcoin: the vulnerability of zero-confirmation (0-conf) transactions to double-spending attacks. Zero-confirmation...
We’ve recently submitted our latest paper to the 2025 7th International Conference on Blockchain Computing and Applications (BCCA), which will take place in Croatia. In...
How GroupHug works, a server programmed in Rust that allows grouping or batching of transactions without interaction between users using SigHash Single | AnyoneCanPay...
April 7, 2024 · 6 min · Pol Espinasa Let’s suppose that Bob and Alice share a flat and want to buy a television worth 2 bitcoins, paying...