See, if you want to pursue a very highly recognized degree in Computer Science and Engineering and are ready to work hard for getting into it, then I would recommend you the top colleges of each of the state you have mentioned where you can pursue your B.Tech in CSE and also take up a minor in Blockchain or Cyber Security.

1. NIT Andhra Pradesh, AP

2. NIT Tiruchirappalli, Tamil Nadu

3. NIT Goa, Goa

4. NIT Surathkal, Karnataka

5. NIT Calicut, Kerala

Hope I have answered your question. All the best!