INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET) E-ISSN: 2395-0056 VOLUME: 07 ISSUE: 07 | JULY 2020 WWW.IRJET.NET P-ISSN: 2395-0072 © 2020, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 1407 Secure Cloud Storage Utilizing Blockchain for Productive Search Meena Kumari K S 1 Nazia Nusrath Ul Ain 2 1 Assistant Professor, Department of Computer Science and Engineering 2 Assistant Professor, Department of Information Science and Engineering Brindavan College of Engineering Bangalore – 560063 India ----------------------------------------------------------------------***------------------------------------------------------------------ Abstract: Blockchain Technology has received huge recognition, with a rapid interest in various applications, ranging from information management, cyber security, IoT, healthcare and economic services. There was an outstanding interest witnessed in utilizing applications of blockchain for the transport of secure and comfortable healthcare records. Furthermore, blockchain is transforming the customary medicinal services practices into a more reliable means, in terms of effective diagnosis and treatment through safe and secure records sharing. Within the future, blockchain will be an era that could potentially help in personalized, true, and comfortable healthcare through merging the entire actual-time medical records of a patient’s health and providing it in a secure healthcare setup. In this paper, we are applying health sensor data to the new technology which is called as blockchain and storing these health sensor data to cloud storage. Keywords: Blockchain, Blockchain healthcare systems, Cloud Computing, Cloud Storage. 1. INTRODUCTION Within the evolution of distributed systems, clouds have come to be a new trend and grid computing being the forerunner. Cloud computing become introduced within the industry through the companies like Microsoft, sales force, Amazon, Google and Yahoo. Cloud computing has centralized server resources in a disbursed structure such that it is able to offer on-demand service or resources on a scalable platform. Cloud computing is based on pay-on- usage version for permitting convenient and offer access to a shared pool of configurable sources [1][2]. Cloud computing applications are commonly rated below subscription model. The cloud based services not only prohibited for software applications. Cloud storage is a service that keeps records, manages and backup remotely and made records available to customers over the network (through net). There are numerous cloud storage vendors like Drop Box, Google drive, box, Amazon, Apple Cloud and Microsoft SkyDrive [3]. Client need to pay amount according to the plan if they pass the free space restriction. Through using cloud storage service, clients need not make investments on storage devices even technical assist isn't required for maintenance, he storage, backup, disaster recovery [4]. The idea of cloud storage in not really worth while the customer is capable of store and control the data at low price when compared thru using cloud .So, the cloud have to be designed in such a way that it is price effective, autonomic computable, multi- tenant, scalable, available, manage, efficient [5]. TABLE I Overview of Cloud Computing Cloud storage architecture includes the front-end, middleware, back-end. The front-end may be web-service front-end, record based the front-end, and even more conventional the front-ends. The middleware includes storage logic which implements numerous capabilities like replication, data reduction, data placement algorithms. The back-end implements the physical storage for data. The access techniques for cloud are different from conventional storage because the cloud holds different kind of data of various clients. Most of the vendors implement multiple access techniques [6]. Fig. 1 General Cloud Storage Architecture Blockchain is a dispensed framework recording and putting away exchange data. Exceptionally, blockchain is a shared, immutable file of peer-to-peer transactions built from related transaction blocks and saved in a digital ledger. Blockchain is based on set up cryptographic strategies to permit every player in a community to engage (e.g. save, trade, and look at records), without pre-existing belief among the events. In a blockchain system, there may be no Deployment Models Essential Characteristics Service model Public On Demand Service SaaS Private Broad Network Access PaaS Hybrid Resource Pooling Rapid Elasticity IaaS Community Measured Services