Suli,  We are technically able to do this, but have not yet operationalized the code. It is a common request and we're looking into the best way to deliver it.  BTW, what are you looking to do with Atmos onLine?  - Leo
Can you calculate a hash (like MD5) after the file is successfully uploaded to EMC onLine and store this it into the System metadata? It will help the uploader to make sure the data content is the same as it is uploaded. To avoid mismatch hash, it is a good idea to release the code to generate the hash.
Data Integrity Qestion