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Content authenticity in DVB
Host: Naomi Schoppa Reporter: Naomi Schoppa Session goal: How can verifiable content be integrated into a DVB ecosystem?
Summary of discussion:
Positioning of C2PA within the DVB Context
- Joint assessment of the role C2PA can play in the DVB environment
- Focus on provenance, authenticity, and trustworthiness of media content
- C2PA is considered a relevant standard due to its high market acceptance, existing implementations, and industry support
- Alternative standards or a proprietary DVB solution are deliberately excluded
Client Side
- Receipt of information by the end user
- Discussion of which provenance information is actually necessary on the client side
- Balancing minimal information (e.g., broadcaster / state of origin) against a more comprehensive representation of the origin
- Mapping the provenance chain
- Question of whether an End to end chain is sufficient initially
- In the long term, it must be possible to include the end to end chain
- Heterogeneity of the consumer group
- Users’ varying technical capabilities, devices, and information needs
- Challenge of presenting provenance information in a way that is understandable, builds trust, and is not overwhelming
- Communication along the usage chain
- Question of how information can be transported through the “population chain” in a way that is not only technically correct but also socially acceptable
- A brief discussion on the role of AI labeling: Here, we need to distinguish between AI-generated, edited, or manipulated content. How can this be addressed, and what can be done? The definition can be found here
DVB-I
- Securing Service Lists
- Brief discussion on whether Service Lists themselves can be secured using C2PA or similar mechanisms
- Assessment of whether this would be technically feasible
- Key and Trust Models
- Mention of key rotation mechanisms as a necessary component of a scalable security concept
- Focus on a short “trust chain” in the beginning Broadcaster <> Client side
- Building on this, a later transition to a complete end-to-end chain spanning multiple stakeholders
- Brief discussion regarding responsibility for implementation in the chain –> No final conclusion
Next steps:
– Check whether the DVB-I standards need to be adjusted for the verifier-component.
– Check whether the standard needs to be adapted to support a signature and transmission mechanism.
– Study mission (?) on the end-users’ perspective
– First, set up a short broadcaster-to-client chain; later, trace it back to the end-to-end chain in DVB Environment.