Supermassive Blockchain

TL;DR

Supermassive Blockchain introduces a storage-scalable BFT protocol with a decoupled architecture, employing erasure coding for scalable state management, achieving improved storage scalability and security guarantees in blockchain systems.

Contribution

It proposes a novel state-execution decoupled architecture and a BFT protocol that maintains security while enhancing storage scalability using erasure coding.

Findings

Achieves better storage scalability than prior methods.

Maintains deterministic security properties of BFT.

Incurs low network overhead during operation.

Abstract

Storage scalability is paramount in the era of big data blockchain. A storage-scalable blockchain can effectively scale out state storage to an arbitrary number of nodes and reduce the storage pressure on each, similar to distributed databases. Prior research has extensively utilized sharding techniques to attain storage scalability; however, these approaches invariably compromise safety and liveness guarantees. In this work, we propose a novel state-execution decoupled architecture, and Supermassive Blockchain, a novel storage-scalable Byzantine fault tolerance (BFT) protocol that can sustain the deterministic security properties of conventional BFT protocols. The state management system employs erasure coding to ensure state availability with scalable storage consumption, while the global consensus and execution layers maintain robust security characteristics. Our evaluation indicates that Supermassive Blockchain achieves better storage scalability compared to prior approaches while incurring low network overhead.