Anthropic: no published provenance mark

The ledger searched and found no instrument. The record says where it looked and when.

Where the ledger looked: Searched on 2026-09-15: anthropic.com/transparency fetched in full and scanned for C2PA, Content Credentials, provenance and watermark, zero hits; anthropic.com/search?q=C2PA returns HTTP 404; and the C2PA conforming products list was scanned for an Anthropic applicant, none found. No published Anthropic statement about embedding a manifest or a watermark was located.

Record ID

CPS-2026-0017

Kind

Platform or model provider

Jurisdiction

United States

Last verified

15 September 2026

Added

15 September 2026

• Anthropic's transparency page was fetched in full and contains no occurrence of C2PA, Content Credentials, provenance or watermark.
• No applicant matching Anthropic appears among the entries on the C2PA conforming products list.
• Anthropic is named in the European Commission's material as an example of a signatory to section 1 of the code of practice on transparency of AI generated content.
• Absence of a published statement is not absence of a behaviour; it means nobody has been told, which is itself the finding.

Embeds a mark or manifest, Displays or verifies, What it requires. Stated means the document you can open below says it; silent means the ledger read the document and it does not.

Embeds a mark or manifestSilent

No published statement that any Anthropic product embeds a manifest or a watermark.

Displays or verifiesSilent

No published Anthropic verification or detection surface for provenance marks.

What it requiresStated

Anthropic appears as a signatory to the European code of practice, which is a commitment to its measures rather than a described product behaviour.Code of Practice on Transparency of AI-generated Content, European Commission, secondary source, 15 September 2026.

If you are procuring a model and provenance matters, ask for it in writing rather than assuming. This is the general lesson of the platform half of this ledger: the companies that mark their output say so on their own pages, in detail, because saying so is the point of doing it. A vendor that has published nothing has given you nothing to rely on, and a contract clause is the remedy, not an inference.

1. Transparency, AnthropicPrimary · 15 September 2026
2. C2PA conforming products listPrimary · 15 September 2026
3. Code of Practice on Transparency of AI-generated Content, European CommissionSecondary · 15 September 2026

• VerifiedBinding lawCPS-2026-0019

  The EU code of practice on marking and labelling of AI generated content

  European Union · verified 15 September 2026

  The Commission describes the code as voluntary, setting out practical steps for providers and deployers of generative AI systems to meet the Article 50 transparency obligations that apply from 2 August 2026.

• VerifiedStandardCPS-2026-0003

  The C2PA conformance programme, the trust list and the conforming products list

  Global · verified 15 September 2026

  The programme holds generator products, validator products and certification authorities to the specification, the Certificate Policy and the Security Requirements.

• VerifiedBinding lawCPS-2026-0024

  The COPIED Act, S. 1396 in the 119th Congress

  United States · verified 15 September 2026

  The bill's long title is "To require transparency with respect to content and content provenance information, to protect artistic content, and for other purposes".

• AbsentBinding lawCPS-2026-0023

  The TAKE IT DOWN Act requires no provenance mark

  United States · verified 15 September 2026

  The Act is Public Law 119-12, enacted 19 May 2025, from S. 146, titled the Tools to Address Known Exploitation by Immobilizing Technological Deepfakes on Websites and Networks Act.

• VerifiedBinding lawCPS-2026-0020

  The California AI Transparency Act, SB 942 as amended by AB 853

  United States · verified 15 September 2026

  SB 942 requires a covered provider to include a latent disclosure conveying the provider's name, the system name and version, the time and date of creation or alteration, and a unique identifier.

• VerifiedPlatform or model providerCPS-2026-0015

  Microsoft: Content Credentials on Azure OpenAI images

  United States · verified 15 September 2026

  Microsoft states that "All AI-generated images from Azure OpenAI in Microsoft Foundry Models include Content Credentials, a tamper-evident way to disclose the origin and history of content".