Returns the estimated network hashes per second based on the last n blocks.
[blocks] to override # of blocks, -1 specifies since last difficulty change.
[height] to estimate the network speed at the time when a certain block was found.
- nblocks (numeric, optional, default=5) The number of blocks, or -1 for blocks since last difficulty change.
- height (numeric, optional, default=-1) To estimate at the time of the given height.
- powalgo (string, optional) This can be set to "minotaurx" or "x16rt". If omitted, wallet's default is assumed (-powalgo conf option)
x (numeric) Hashes per second estimated