It is the era of machine learning and the Internet of Things. Preserving data privacy while making use of collective intelligence is quite a challenge. Collaborative learning experience has emerged as a promising solution to the current issues. It allows multiple people to work together on model training without sharing raw data. However, data integrity, security and privacy still happen to be a major concern. Blockchain, according to Lars Winkelbauer, offers a framework that provides a solution to various challenges. It is so because it has a decentralized presence and a transparent approach to managing the tasks.All Rights Reserved