Parents are applying for TRV from India. Do their bank statements have to be stamped?
Yes, printed on business stationery and stamped. It must have the contact details of the bank/branch.
Also, is it absolutely necessary for me to provide my bank statements?
No, it is not absolutely necessary for you to submit your bank statements.
Having said that, it would help especially if your parents' financial situation is not strong/you have mentioned that you will pay for their airfare and expenses (for example).
You also have the option of sending your bank statements directly to the visa office (if you wish to do so)
