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C2PA members: who writes the standard.

C2PAC2PA: The Coalition for Content Provenance and Authenticity: the group that publishes the open standard for content labels. has 400+ member groups, from tech firms to newsrooms. They all build on one standard. So a label made in one app can be checked in another.

Start freeFull member list
  • Adobe, a C2PA member
  • Microsoft, a C2PA member
  • Google, a C2PA member
  • OpenAI, a C2PA member
  • Meta, a C2PA member
  • Amazon, a C2PA member
  • Intel, a C2PA member
  • Arm, a C2PA member
  • Qualcomm, a C2PA member
  • BBC, a C2PA member
  • Associated Press, a C2PA member
  • The New York Times, a C2PA member

Encypher authored the C2PA standard for unstructured text and co-chairs the Text Provenance Task Force alongside these member organizations. Logos indicate C2PA membership.

Members
400+ groups.
Founded
2021, by Adobe, Arm, BBC, Intel, Microsoft and Truepic.
Encypher
Co-chairs the C2PA Text Provenance Task Force.
Sister group
The Content Authenticity InitiativeContent Authenticity Initiative: An Adobe-led group that promotes the C2PA standard and ships open tools for reading and showing Content Credentials. has 6,000+ members.

Four kinds of members

Who is in C2PA, and what each group adds
GroupExamplesWhat they add
Tech firmsAdobe, Microsoft, Google, Intel, Arm, QualcommThey build the core and the tools.
AI labsOpenAIAI tools can label what they make.
NewsroomsAP, the BBC, The New York TimesTheir work reaches many outlets.
Camera makersLeica, Nikon, SonyTheir cameras sign photos as they are taken.

Why the number matters

A camera, an AI image tool and a newsroom system each add the same C2PA label; a browser, a social app and a checker each read that same label.
A label made in one tool can be read in another, because both follow one standard.
  • A label is only useful if others can read it.
  • When many firms build on one standard, a label made in one tool can be read in the next.
  • No single firm owns the check. Open code can do it.

Not every member reads labels in every app today. But the tools are being built on common ground.

How the work is split

C2PA splits its work into task forces. Each one owns part of the standard, such as text, sound and video, or who signed.

Encypher authored C2PA's standard for unstructured text, published as Section A.7 in C2PA 2.3 and carried forward as Section A.8 in C2PA 2.4.

Erik Svilich, Encypher's founder, co-chairs the Text ProvenanceText provenance: A signed label for text: who signed it, when, and whether the words changed. Task Force. It keeps the C2PA standard for unstructured textC2PA text-provenance standard: The part of the C2PA standard that puts a signed label inside plain text, using invisible Unicode characters. current. Read how the text standard works.

For engineers

Show the technical detail

Governance

C2PA is a Joint Development Foundation project, an affiliate of the Linux Foundation. Its specifications are published free at spec.c2pa.org. Technical work happens in task forces, each with its own part of the specification.

C2PA and CAI

C2PA writes the specification. The Content Authenticity Initiative, led by Adobe, promotes it and ships open-source tools such as the c2pa-rs library. Content Credentials is the name apps show to users for a C2PA manifest.

The full, current member list is on c2pa.org.

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