The placement of CSE students in SRM are 80℅. It depends on lot of factors like your skills, behavior,college accomplishments, recommendation, authorised certificates, etc.
Blockchain does have a future in upcoming years. Even if you take any specialisation course from SRM you would all end up at being placed similarly the only difference I found is that it only helps you when you want to do masters in your specialisation subjects in future or you are passionate about a particular specialisation .
All the best!!
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