Please add hash calculation for uploaded files. There are cases when large files are upload and shared via One Drive. Sometimes, due to low or fluctuating bandwidth process of upload can become lengthy. Once upload is complete, I want to make sure uploaded content is identical to the source. Hash calculation is the best solution in this case. Simple MD5 will do. Nothing fancy and resource-consuming please. I understand perfectly it is cloud and MD5 will affect compute in your case and costs might go up. But, from the risk mitigation perspective and avoiding cache sharding (I presume you are using these algorithms to avoid necessity of network overloads) resource overuse caused by repeated uploads, hash calculation will be beneficial I presume. Also, hash calculation could be manual process or related to only large files. I am actually surprised I am first to suggest this important feature.