What is Blockchain? The Blockchain is Associate in Nursing undeniably new invention during this time. In Blockchain digital data to be distributed however not traced, blockchain technology created the backbone of a replacement style of web. these days Blockchain keep extremely protected and centralized databases that used governments or banks or firms for security purpose. These are registered during a way that inhibits their subsequent modification. Blockchain technology increases the safety and accelerates the exchange of data during a way that's cost-effective and more transparent. It also dispenses with third parties whose main role was to supply a trust and certification element in transactions (such as notaries and banks).