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IV. BLOCKCHAIN IN IOT the Internet of Things to the Blockchain network through the
Because ecological monitoring software's potential is application of the API and using the consensus algorithms
comprised of a cost-effective ability to construct and handle used in this technology. Then the data is stored in the form of
a wider range of data with greater resolution, wireless sensor blocks, and after verifying its validity by the nodes
networks (WSNs) are constantly used by the scientific participating in the network, this block will be added to the
community, these systems are regarded as an important part Blockchain after it is fragmented data via the hash function.
of ubiquitous computing [25]. In the process of connecting
devices with sensors surrounding the Internet and facilitating Among the most important advantages of using the
access to information, exchange, and processing of required blockchain with the Internet of things are:
data from anywhere in the world and at any time via
ready-made software platforms via the Internet [26], the 1- Making the Internet of Things more secure, because the
Internet of Things has become a supporter of many areas. Blockchain is a decentralized network, so the process of
Decentralization, anonymity, persistency, and auditability penetrating it is difficult.
are some of the properties of Blockchain [27]. Remember
that Blockchain's unique properties offer a possible solution 2- It is more private, so it is preferred to be used in many
to IoT security issues. Decentralization, resilience, security, companies and institutions.
and identity management are all improved in IoT systems.
As a result, the Blockchain can serve as a secure foundation On the other hand, there are some disadvantages in
for IoT networks. The majority of Blockchain participants integrating the Blockchain with the IoT, the most important
must validate transactions before they can be approved and of which are:
added, to the public ledger that is distributed, ensuring public
visibility as well as visibility. Furthermore, there is no 1- It needs high computing power.
centralized authority for transaction approval or establishing
precise communication or service access requirements for 2- It needs continuous energy because its work depends
participants. Therefor is increased and widespread trust on the Internet, and in the event of any disconnection of the
because most participating IoT network devices must agree Internet, it leads to some problems.
to confirm transactions [13]. In fig.6 explains an IoT data
transaction and how it can be secured using Blockchain. V. RESERCH GAP AND SOLUTION
Fig 6. How Blockchain work [13] IoT technology has aided industrial automation and
Since the Internet of Things is a central network and digitization in the manufacturing sector., Several innovative
transmits important and sensitive information, the issue of Internet of Things apps has improved manufacturing
security is one of the most important issues that must be infrastructure quality, flexibility, and scalability, cutting
addressed in this network, and one of the most important errors, saving money, and improving the performance and
techniques used to solve the issue of security is the security of manufacturing and industrial operations. [28, 29]
Blockchain technology. Where the data is transferred from that come to me when I think about The majority of modern
IoT systems store and process sensor data in a centralized
data center, which is susceptible to data breaches, single
points of failure, and malicious assaults like DDoS and Sybil.
[28-30]. This leads to service outages and a flood of sensor
data, outweighing the IoT system's significant benefits.
Furthermore, When IoT devices exchange data, data
interception is a possibility, raising concerns about the
collected data's reliability. The idea of combining blockchain
and IoT has recently acquired a lot of traction among
researchers who want to take advantage of it.
To solve the aforementioned concerns, hybrid
architectures are being developed. Differences in mining
rates and resource capacity imbalances between IoT devices
and blockchain nodes make integrating blockchain
technology into IoT applications difficult. These problems
must be resolved. According to experts, autonomous agents
are used in many IoT ecosystems, including healthcare,
smart cities, smart homes, and electric energy commerce[31,
32]. An agent is a self-contained entity that uses sensors or
data from the Internet of Things to function in place of users.
Wearable sensors, cellphones, network devices, and portable
computers all contribute to the huge volumes of data
generated by the Internet of Things (IoT) ecosystem. Users
may not always be able to deal with the onslaught of
information [33]. As a result, self-contained businesses must
monitor and analyze data from a wide range of IoT devices.
The autonomous agent is a proactive body that can detect
