BITCOIN-UTIL(1)                  User Commands                 BITCOIN-UTIL(1)

NAME
       bitcoin-util - manual page for bitcoin-util v31.1.0

SYNOPSIS
       bitcoin-util [options] [command]
       bitcoin-util [options] grind <hex-block-header>

DESCRIPTION
       Bitcoin Core bitcoin-util utility version v31.1.0

       The bitcoin-util tool provides bitcoin related functionality that does
       not rely on the ability to access a running node. Available [commands]
       are listed below.

OPTIONS
       -help

              Print this help message and exit (also -h or -?)

       -version

              Print version and exit

       Debugging/Testing options:

       Chain selection options:

       -chain=<chain>

              Use the chain <chain> (default: main). Allowed values: main,
              test, testnet4, signet, regtest

       -signet

              Use the signet chain. Equivalent to -chain=signet. Note that the
              network is defined by the -signetchallenge parameter

       -signetchallenge

              Blocks must satisfy the given script to be considered valid
              (only for signet networks; defaults to the global default signet
              test network challenge)

       -signetseednode

              Specify a seed node for the signet network, in the
              hostname[:port] format, e.g. sig.net:1234 (may be used multiple
              times to specify multiple seed nodes; defaults to the global
              default signet test network seed node(s))

       -testnet

              Use the testnet3 chain. Equivalent to -chain=test. Support for
              testnet3 is deprecated and will be removed in an upcoming
              release.  Consider moving to testnet4 now by using -testnet4.

       -testnet4

              Use the testnet4 chain. Equivalent to -chain=testnet4.

       Commands:

              grind

              Perform proof of work on hex header string

COPYRIGHT
       Copyright (C) 2009-2026 The Bitcoin Core developers

       Please contribute if you find Bitcoin Core useful. Visit
       <https://bitcoincore.org/> for further information about the software.
       The source code is available from <https://github.com/bitcoin/bitcoin>.

       This is experimental software.  Distributed under the MIT software
       license, see the accompanying file COPYING or
       <https://opensource.org/license/MIT>

SEE ALSO
       bitcoin(1), bitcoind(1), bitcoin-cli(1), bitcoin-tx(1), bitcoin-
       wallet(1), bitcoin-util(1), bitcoin-qt(1)

bitcoin-util v31.1.0               July 2026                   BITCOIN-UTIL(1)