Google Adds Five New Trust Signals to Open Knowledge Format

Google has introduced five new trust signals to its Open Knowledge Format (OKF), strengthening how AI systems evaluate information quality and reliability. The update adds metadata covering provenance, trust, freshness, lifecycle, and attestation, helping AI agents verify whether knowledge is current and trustworthy before using it. The enhancements are designed to improve transparency while supporting collaborative knowledge management. As AI increasingly relies on structured information, these signals could become important for organizations publishing machine-readable documentation and datasets that need to demonstrate credibility across automated systems.