Hello aspirant,
Hope you are doing well,
There is no particular college for BCA Blockchain in Chennai but there are few Blockchain training centres in Chennai
Check below link to have list of Blockchain, course, syllabus, subject etc,
https://www.careers360.com/courses/blockchain-course
Check below link to have list of BCA colleges in Chennai,
https://it.careers360.com/colleges/list-of-bca-colleges-in-chennai
Good luck
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