Overview
Integrity assurances are mechanisms that increase trust in a signal or plugin. They are not signals themselves but modifiers of credibility.
Examples under study:
- Android Play Integrity API — attests to app and device state.
- Apple App Attest — verifies iOS app legitimacy.
- Trusted Execution Environments (TEE) — enclaves like TrustZone, SGX, Secure Enclave.
- Hardware-backed keys — signing with embedded secure elements.
- Secure boot chains — device starts in a verified state.
- C2PA content credentials — media provenance.
- Timestamp notaries — external time anchors.
Future pages will expand these into detailed references.