Lekana - Blockchain Based Archive Storage for Large-Scale Cloud Systems

摘要

Blockchain is a form of a distributed storage system that stores a chronological sequence of transactions in a tamper-evident manner. Due to the decentralized trust ecosystem in blockchain, various industries have adopted blockchain to build their applications. This paper presents a novel approach to building a blockchain-based document archive storage platform, "Lekana". The Lekana platform can be adopted by service providers that require frequent document operations, such as "Pageroonline", a cloud-based e-invoicing provider in Europe. With Lekana we introduce a novel approach to store an immutable hash chain of archived data which are owned by the customers in the blockchain. The proposed Lekana platform is built on top of Mystiko which is a highly scalable blockchain storage platform targeted for big data. We have integrated real-time data analytics and machine learning techniques into the Lekana platform by using the Mystiko-Ml machine learning service on Mystiko blockchain. By integrating the Lekana platform with blockchain technology, we have addressed major issues in most cloud-based, centralized storage platforms (e.g. lack of data privacy, lack of data immutability, lack of traceability and lack of data provenance). As a case study in the paper, we present how "Pageroonline" cloud-based e-invoicing provider stores their archived document data and archived document hash chain in the blockchain-based Lekana platform.