Applicability of Blockchain Technology in Communication of Data using Raspberry Pi as Server

The main things we used to build the project in this paper are one raspberry pi as server, two Arduino’s as two nodes which are configured to connect to Wi-Fi using ESP8266 (node mcu). We will connect temperature and humidity sensor to one Arduino and RFID Reader module to another Ardunio Board to demonstrate the entire process. The working follows as the data is taken from DTH sensor and RFID Reader module which is sent to Raspberry Pi. Arduino’s acts as nodes from which data transmission starts. The Raspberry Pi acts as gateway between two Arduino’s and it is the server. All the components are connected to the Wi-Fi. The data from the sensors is taken and will be sent to server in hash, hash includes all the previous data and we already know that block chain is a decentralized network. We cannot manipulate the values of data at any point because of their data contains both previous and local hash. This is why usage of block chain provides more security to IOT devices. Henceforth, we implemented this exceptional way of blockchain technology for communication of data for safety and immense security