Whats the nature of bytes and blackbytes in Byteball?

Please correct me if i'm wrong.
In my imagination bytes are more comparable to fuel.
It’s the currency to ensure the operation and the stability (health) of the network.
So the characteristics of bytes is more like gas (ETH or Ripple) and blackbytes are almost (in the broadest sense) like cash / (~XMR..).
-> Blackbytes are a layer of Bytes (as well as bank notes are a physical layer of a native currency).