Please stop adding layers and layers of calculations, it's a waste of energy.
Filebase[1] provides S3-compatible object storage at a fraction of the price. We happily use Sia on our backend. :)
The trend in electronics is that this has become less true over time. As transistors have shrunk, the relative cost of calculation has diminished compared to the cost of transmission over distances. A cryptographic operation can be cheap compared to accessing main memory because the distances signals travel within the crypto logic block are tiny.
Complexity (as in more to understand) does not equate sensibly to higher power consumption.