You do not have to submit any proofs or supporting documents to Income-tax Department after e-filing of IT return.
Nothing to be attached along with your ITR-V also while sending to CPC, Bangalore. You just have to sign it and send it to CPC.
The address is mentioned at the bottom of the ITR-V.In case you have filed your return with a digital signature then you need not take any action after receiving your acknowledgment.
However you should never enter details in e-filing for which you don't have any supportive documents or any in-correct information
You may need to produce relevant documents only in case your Return is selected for Scrutiny and Income-tax Officer asks for it.