Live Protocol Demo
Identity that survives everything except deletion.
C2PA metadata dies on upload. Attestik identity survives re-muxing, transcoding, and social platform processing. See it happen.
Content Binding
SHA-256 hashes at bitstream, codec, and distribution levels bind identity to the actual media.
120-800 Bytes
Attestation frames add minimal overhead per segment. Orders of magnitude smaller than C2PA.
Platform Resilient
Survives re-muxing, transcoding, and social upload. Identity travels with the media stream.
Ed25519 Signatures
Every segment is individually signed. Hash chain links segments together cryptographically.
Attestik vs. C2PA
C2PA stores provenance in the file container. Every platform in the delivery chain destroys it.
| Operation | C2PA (Container Metadata) | Attestik (Content Binding) |
|---|---|---|
| Re-mux (MP4 to MKV) | ✗ Metadata destroyed | ✓ L1 bitstream hash matches |
| Transcode to 720p | ✗ Metadata destroyed | ✓ L2 codec-level hash matches |
| Upload to social platform | ✗ Metadata destroyed | ✓ L2 codec hash + sidecar recovery |
| Strip SEI NAL units | ✗ Metadata destroyed | ✗ Identity signal deleted |
| CDN edge caching | ✗ Often stripped by CDN | ✓ Travels with media stream |