Code of Practice Signatory Register

@misc{certian_cop_signatories,
  author       = {{Certian, Inc.}},
  title        = {Code of Practice Signatory Register --- Transparency of AI-Generated Content},
  year         = {2026},
  howpublished = {\url{https://certian.com/signatories}},
  note         = {Retrieved 17 August 2026. 190 organisations. Source: European Commission, full list of signatories, published 31 July 2026},
  license      = {CC BY 4.0}
}

Correction, 24 Aug 2026: three organisation names in the census were transcribed incorrectly when it was first published on 2 August 2026 and have been corrected to the Commission’s spelling. Vulcable is recorded by the Commission as Vucable, in both sections. Omnilia NLS Ltd is recorded as Omilia NLS Ltd. AbthreeC GmbH is recorded as ABthreeC GmbH. Each was a single character. The errors were found by comparing every name in the census against the Commission’s published list on 24 August 2026; the remaining 232 names matched exactly and the section counts were unaffected. This census states that names are reproduced as published, so a spelling that differs from the source is an error here whether or not it matches the organisation’s own usage. The CSV and JSON downloads carry the corrected names.

Correction, 17 Jul 2026: the Commission’s signing FAQ now states the initial-signatory form deadline as 27 July 2026, 18:00 CEST (previously communicated as 22 July). This page was updated the day the change was confirmed. Source of record: European Commission — Signing FAQ · Code of Practice policy page. Entries on this page are recorded from the Commission's own publications, with the date each entry was first confirmed. This tracker is independent of the Commission and of every signatory.

Note, 22 Jul 2026: coverage elsewhere continues to cite the superseded 22 July date — including articles published this week. The Commission's signing FAQ confirms 27 July 2026, 18:00 CEST. The correction above has stood since 17 July. If you believed the window closed today: it has not — and signing remains possible at any time after the 27th as well, per the same FAQ.

Observed, 2 Aug 2026: the initial signatory list was published by the Commission on 31 July — within its stated "in July" window — and is recorded above as the Count's first observation. One further observation from the same check, recorded as found: the Commission's signing FAQ currently again displays a 22 July deadline under a "Last update: 10 June 2026" stamp, though the same page stated 27 July 2026, 18:00 CEST between 17 and 26 July, as recorded in the correction notice above and reflected in engine caches from that period. This register records what the source said, and when. Re-confirmed 3 August 2026: the page continues to display the 22 July date under the same stamp. The list remains open; signing remains possible at any time. Correction, 6 Aug 2026: the Commission’s signing FAQ now displays 27 July 2026, 18:00 CEST throughout, under a revised stamp — “Last update: 29 July 2026” — with substantially expanded content, confirmed live on 6 August. Because the page’s own revision date precedes our 2–3 August checks, those checks are best explained as cached copies still being served rather than the live page remaining unrevised. The observations above record what was served when checked; the inference that the page “continues to display” the older text is corrected accordingly. The sequence as recorded: 22 July under a 10 June stamp; 27 July between 17 and 26 July; the older text served to checks on 2–3 August; 27 July under a 29 July stamp thereafter.

Primary sources: Commission FAQ — Signing the Code of Practice · How to sign · Code of Practice policy page. Summary of public information; not legal advice.