This round was held with the Head of Technology of Nirvana Solutions. The interviewer was friendly and he asked me to introduce myself, and then asked about my interests. I mentioned Blockchain, so he went on deeper to check my understanding about the same. Finally, he asked me to model a blockchain to maintain a database of patients at a hospital. The interviewer was very interactive throughout the interview and consistently asked why I was taking certain values as private and certain as public, hence strong understanding of OOPS concepts was needed.