Alba: The Dawn of Scalable Bridges for Blockchains
Giulia Scaffino
Network and Distributed System Security (NDSS) Symposium 2025 · Day 3 · Blockchain Security 2
In this insightful talk from the NDSS Symposium, Giulia Scaffino introduced **Alba**, a groundbreaking protocol designed to overcome two of the most significant limitations plaguing modern blockchain ecosystems: **scalability** and **interoperability**. While Layer 2 solutions have made strides in off-chain transaction processing, they traditionally remain tethered to their native Layer 1 blockchains. Similarly, existing bridge protocols, though enabling some cross-chain communication, often require transactions to be posted on-chain, inherently hindering their scalability and preventing seamless interoperability between different Layer 2 protocols or between a Layer 2 and a non-native Layer 1.
AI review
Legitimate academic research on a real problem — cross-chain interoperability without on-chain bottlenecks — with a concrete protocol design, formal security proofs, and actual gas benchmarks. Solid NDSS-tier work, but this is a blockchain/distributed systems paper, not security research in the adversarial sense, and the write-up summary reads more like a conference brochure than a technical briefing.