About OnlineITguru: OnlineITguru is the globally professional in IT courses training which emphasizes hands-on experience with examples from real-time scenarios by experts. It is the largest provider of high-quality online training courses. It is conceptualized and initiated by several multidisciplinary and ingenious software technocrats having a combined experience of more than 8yrs in the industry. A blockchain is a database that is shared across a network of computers. Once a record has been added to the chain it is very difficult to change.The records that the network accepted are added to a block. Each block contains a unique code called a hash. It also contains the hash of the previous block in the chain. Flexible Timings | Certified &Industry Experts Trainers - Customize Course | Multiple Training Delivery Models -24/7 Support | Hands-On Experience -Real-Time Use Cases | Q&A with Trainers -Small Batches (1to5) | Flexible Payments -Job Support | Placement Assistance