Advertisers who use illegal methods to access users’ personal data for their own benefit, for remuneration and in similar scenarios, pose a serious threat, and blocking is primarily the result of digital advertising that gives users control over their data. Car giant Toyota uses Blockchain technology to reduce fraud in its digital advertising campaigns. In this article, you can read about how Blockchain will impact the digital advertising network in 2020. With Blockchain, advertisers now get the right data with high quality and reduce the risk of data change through a common approach to factor distribution. But in all cases, Blockchain has a positive and gradual impact on the digital advertising ecosystem. Security and data protection is one of the main challenges in the digital advertising industry. In the past, many fake messages used to appear online through social media, but now they can be tracked because Blockchain technology makes the distributed system highly transparent and traceable. The use of Blockchain technology in digital advertising is very important. The use of digital network advertising 1. Data is currently very vulnerable, digital advertising tools are using it as a new benefit plan. In recent decades, advertising companies have used users’ personal data to gain insight into their buying behavior and develop campaigns that invade their personal space.