waitfornewblock ( timeout )
Waits for a specific new block and returns useful info about it.
Returns the current block on timeout or exit.
Arguments
1. timeout (numeric, optional, default=0) Time in milliseconds to wait for a response. 0 indicates no timeout.
Result
{ (json object)
"hash" : "hex", (string) The blockhash
"height" : n (numeric) Block height
}Examples
> bitcoin-cli waitfornewblock 1000
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "waitfornewblock", "params": [1000]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/