Hello aspirant, first of all congratulations on getting CSE block chain technology seat in VIT vellore. Usually, the salary of a Blockchain Developer in India ranges anywhere between Rs. 5,00,000-30,00,000 LPA but there are less job opportunities in India now in this field. Block chain technology is the principal behind cryptocurrency like bitcoin. This technology is cutting edge and its scope is very good in future. It provides incorruptible transactions and payments can be made very securely and fast. Big company owners like Elon Musk are giving more importance towards this sector and this technology is rapidly improving. In India the demand for developers are huge and there are not many professionals available in the market today. Hence it is worth taking but you should still keep trying for better colleges and branches.