CLAIM-2026-08-19-09

The A2A specification defines no semantics for content provenance, watermarking, C2PA or Content Credentials, and no mechanism for marking content as artificially generated.

Why it matters

An artifact crossing an A2A boundary arrives with no protocol-level indication that a model produced it. If you republish it, that is your Article 50(4) problem, not the sender's.

Sources

• aaproject2026agentagen
• aaproject2026aa