getnetworkhashps ( nblocks height )

The getnetworkhashps RPC returns the estimated current or historical network hashes per second based on the last *n* blocks.

*bitcoin-cli help getnetworkhashps

getnetworkhashps ( nblocks height )

Returns the estimated network hashes per second based on the last n blocks.
Pass in [blocks] to override # of blocks, -1 specifies since last difficulty change.
Pass in [height] to estimate the network speed at the time when a certain block was found.

1. nblocks     (numeric, optional, default=120) The number of blocks, or -1 for blocks since last difficulty change.
2. height      (numeric, optional, default=-1) To estimate at the time of the given height.

x             (numeric) Hashes per second estimated

> bitcoin-cli getnetworkhashps 
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "getnetworkhashps", "params": [] }' -H 'content-type: text/plain;'