Implementación de una arquitectura basada en blockchain para secuenciar la ocurrencia de eventos en bases de datos distribuidas.

Abstract

Auditing distributed databases could be very challenging due to the difficulty of determining the time of occurrence of any transaction. In fact, the higher the number of distributed transactions in a short period of time, the harder it is to order their occurrence. Despite the importance of solving this problem, very little research has been done in the last years, which has been mostly focused on improving databases' performance rather than their security. Meanwhile, the emerging blockchain technology in recent years has devised elegant solutions to guarantee transactional integrity between distributed database nodes. In this paper, we propose a blockchain-based architecture focused on transactional sequencing of events in a distributed environment. We use an open source blockchain technology to demonstrate its functionality for auditing purposes. We enhance audit controllers proposed in previous research to make them blockchain-compliant. Finally, we evaluate the architectural performance and its distributed consistency using high transactional workload within a commercial Cloud platform. Besides providing detailed implementation guidelines using open source blockchain technology, our main contribution is demonstrating its application for generating, collecting, and preserving audit trails in a distributed database