A Two-Layer Blockchain Sharding Protocol Leveraging Safety and Liveness for Enhanced Performance
Yibin Xu
Network and Distributed System Security (NDSS) Symposium 2024 · Day 2 · Blockchain Security
Blockchain technology has ushered in a new era of decentralized applications, but its widespread adoption is often hindered by inherent scalability limitations. The challenge lies in processing a high volume of transactions without compromising the fundamental security properties of decentralization and immutability. Sharding has emerged as a promising solution, segmenting the network into smaller, parallel divisions or **shards** to boost transaction throughput and reduce consensus overhead. However, this approach introduces a critical trade-off: smaller shards, while increasing parallelism, also become more susceptible to adversarial attacks.