---
name: "sigsum-witness"
section: "1"
platform: "linux"
package: "sigsum-go"
version: "0.11.2-1+b3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/sigsum-witness"
---

# sigsum-witness(1)

provide service for cosigning a sigsum log

## NAME

sigsum-witness - provide service for cosigning a sigsum log

## SYNOPSIS

**sigsum-witness** \[*-v*\] \[*--help*\] \[*-k file*\] \[*--log-key file*\] \[*--state-file file*\] \[*--url-prefix string*\] *host:port*

## DESCRIPTION

- **--help**

  Display help

**-k**, **--signing-key**=*file*

-

  Witness private key (required)

**--log-key**=*file*

-

  Log public key (required)

**--state-file**=*file*

-

  Name of state file (required)

**--url-prefix**=*string*

-

  Prefix preceding the endpoint names

- **-v**, **--version**

  Display software version

Provides a service for cosigning a sigsum log (currently, only a single log), listening on the given host and port.

Be warned: this tool is only used for internal testing.