---
name: "bitcoin-tx"
section: "1"
platform: "linux"
package: "bitcoin-tx"
version: "32.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/bitcoin-tx"
---

# bitcoin-tx(1)

manual page for bitcoin-tx v32.1.0

## NAME

bitcoin-tx - manual page for bitcoin-tx v32.1.0

## SYNOPSIS

**bitcoin-tx** \[*options*\] *\<hex-tx\>* \[*commands*\]\
 **bitcoin-tx** \[*options*\] *-create* \[*commands*\]

## DESCRIPTION

Bitcoin Core bitcoin-tx utility version v32.1.0

The bitcoin-tx tool is used for creating and modifying bitcoin transactions.

bitcoin-tx can be used with "\<hex-tx\> \[commands\]" to update a hex-encoded bitcoin transaction, or with "-create \[commands\]" to create a hex-encoded bitcoin transaction.

## OPTIONS

**-create**

-

  Create new, empty TX.

**-help**

-

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

**-json**

-

  Select JSON output

**-txid**

-

  Output only the hex-encoded transaction id of the resultant transaction.

**-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:

-

  delin=N

-

  Delete input N from TX

-

  delout=N

-

  Delete output N from TX

-

  in=TXID:VOUT(:SEQUENCE\_NUMBER)

-

  Add input to TX

-

  locktime=N

-

  Set TX lock time to N

-

  nversion=N

-

  Set TX version to N

-

  outaddr=VALUE:ADDRESS

-

  Add address-based output to TX

-

  outdata=\[VALUE:\]DATA

-

  Add data-based output to TX

-

  outmultisig=VALUE:REQUIRED:PUBKEYS:PUBKEY1:PUBKEY2:....\[:FLAGS\]

-

  Add Pay To n-of-m Multi-sig output to TX. n = REQUIRED, m = PUBKEYS. Optionally add the "W" flag to produce a pay-to-witness-script-hash output. Optionally add the "S" flag to wrap the output in a pay-to-script-hash.

-

  outpubkey=VALUE:PUBKEY\[:FLAGS\]

-

  Add pay-to-pubkey output to TX. Optionally add the "W" flag to produce a pay-to-witness-pubkey-hash output. Optionally add the "S" flag to wrap the output in a pay-to-script-hash.

-

  outscript=VALUE:SCRIPT\[:FLAGS\]

-

  Add raw script output to TX. Optionally add the "W" flag to produce a pay-to-witness-script-hash output. Optionally add the "S" flag to wrap the output in a pay-to-script-hash.

-

  replaceable(=N)

-

  Sets Replace-By-Fee (RBF) opt-in sequence number for input N. If N is not provided, the command attempts to opt-in all available inputs for RBF. If the transaction has no inputs, this option is ignored.

-

  sign=SIGHASH-FLAGS

-

  Add zero or more signatures to transaction. This command requires JSON registers:prevtxs=JSON object, privatekeys=JSON object. See signrawtransactionwithkey docs for format of sighash flags, JSON objects.

Register Commands:

-

  load=NAME:FILENAME

-

  Load JSON file FILENAME into register NAME

-

  set=NAME:JSON-STRING

-

  Set register NAME to given JSON-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)](/bitcoin/1.md), [bitcoind(1)](/bitcoind/1.md), [bitcoin-cli(1)](/bitcoin-cli/1.md), [bitcoin-tx(1)](/bitcoin-tx/1.md), [bitcoin-wallet(1)](/bitcoin-wallet/1.md), [bitcoin-util(1)](/bitcoin-util/1.md), [bitcoin-qt(1)](/bitcoin-qt/1.md)