Improving Blockchain Scalability from Storage Perspective

Abstract

Blockchain has been widely deployed in various fields, such as finance, education, and public services. Blockchain has decentralized mechanisms with persistency and auditability and runs as an immutable distributed ledger. However, blockchain systems suffer from critical scalability issues. In this paper, we present three challenges of the scalability issues, namely, poor data synchronization, time-consuming query process, and excessive data load, and discuss possible research directions from the storage hierarchy perspective.