waitforblock (hidden command)

Bitcoin Core 26.0 RPC

waitforblock "blockhash" ( timeout )

Waits for a specific new block and returns useful info about it.

Returns the current block on timeout or exit.


1. blockhash    (string, required) Block hash to wait for.
2. timeout      (numeric, optional, default=0) Time in milliseconds to wait for a response. 0 indicates no timeout.


{                    (json object)
  "hash" : "hex",    (string) The blockhash
  "height" : n       (numeric) Block height


> bitcoin-cli waitforblock "0000000000079f8ef3d2c688c244eb7a4570b24c9ed7b4a8c619eb02596f8862" 1000
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "waitforblock", "params": ["0000000000079f8ef3d2c688c244eb7a4570b24c9ed7b4a8c619eb02596f8862", 1000]}' -H 'content-type: text/plain;'