Try   HackMD

Decentralized Coalition for Content Provenance and Authenticity (C2PA)

Draft

Executive Summary Brief: Enhancing C2PA with Trust Spanning Protocol in a Decentralized Environment

In today's digital landscape, ensuring the authenticity and provenance of content is paramount. The Coalition for Content Provenance and Authenticity (C2PA) addresses this need by providing a framework for verifying the origin and integrity of digital content. However, in a decentralized environment, the challenge of maintaining secure and trustworthy communication channels remains. The integration of the Trust Spanning Protocol (TSP) with C2PA offers a robust solution to this challenge.

Key Benefits of Integrating TSP with C2PA

  1. Secure Communication: TSP facilitates secure message-based exchanges, ensuring that content provenance data is transmitted safely and confidentially. This is crucial for maintaining the integrity of C2PA's content authenticity framework.

  2. Verifiable Trust: By leveraging identifiers based on public key cryptography, TSP ensures that all parties involved in content creation, distribution, and consumption are verified and trustworthy. This complements C2PA's goal of establishing a reliable content authenticity chain.

  3. Privacy Protection: TSP provides measures to protect against metadata-based correlation exploitations, safeguarding the sensitive metadata associated with content authenticity.

  4. Authentic Relationships: TSP enables the formation of authentic relationships between content creators, distributors, and consumers, rooted in verifiable identifiers. This enhances the trust and reliability of the content authenticity process.

  5. Enhanced Transparency: The combined capabilities of TSP and C2PA offer unprecedented transparency, allowing users to verify the origins and processing history of content, thereby reinforcing trust in a decentralized environment.

How Trust Over IP's Trust Spanning Protocol can add value to Coalition for Content Provenance and Authenticity in a Decentralized Environment

Trust over IP's (ToIP) Trust Spanning Protocol (TSP) can significantly enhance the Coalition for Content Provenance and Authenticity (C2PA) in a decentralized environment by providing a robust framework for secure and authentic communication. Here's how TSP adds value to C2PA:

  1. Secure Communication: TSP facilitates secure message-based exchanges between endpoints with different identifier types, ensuring that communications are authentic and, if chosen, confidential. This is crucial for C2PA, which focuses on content provenance, as it ensures that the data related to content authenticity is transmitted securely.

  2. Verifiable Trust Roots: By using identifiers based on public key cryptography (PKC) with verifiable trust roots, TSP ensures that the identities involved in the communication are trustworthy. This complements C2PA's goal of verifying the origin and integrity of content, as it provides a reliable way to authenticate the entities involved in content creation and distribution.

  3. Privacy Protection: TSP offers privacy protection measures against metadata-based correlation exploitations. This is important for C2PA, as it ensures that the metadata associated with content authenticity is protected from unauthorized access and exploitation.

  4. Authentic Relationships: TSP allows endpoints to form authentic relationships rooted in their respective verifiable identifiers (VIDs). This capability supports C2PA by ensuring that the relationships between content creators, distributors, and consumers are based on verified identities, enhancing trust in the content's authenticity.

  5. Enhanced Transparency: By integrating TSP's communication framework with C2PA's content provenance capabilities, the combined solution can offer unprecedented transparency. Users can verify the origins and processing history of content, which is essential for maintaining trust in a decentralized environment.

Overall, the integration of TSP with C2PA in a decentralized environment enhances security, trust, and transparency, addressing critical issues related to content authenticity and provenance.

Sources 
80%20%#1 [4]#2 [1]
#SourceCount
1ToIP AIM TSP and AI for Authenticity - Google Docs4
2ToIP Trust Spanning Protocol - Google Docs1
Metadata 
{
  "https://docs.google.com/document/d/1bsgP1LS7G6x9mxqoA3OszevmgVh9lz0YEziR9skId2A/edit?pli=1&tab=t.0": {
    "title": "ToIP AIM TSP and AI for Authenticity - Google Docs",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 4
  },
  "https://docs.google.com/document/d/1DsvAOGXlMFeE6tYlcaHlitoGLbWGfromRGrvR43zsgs/edit?pli=1": {
    "title": "ToIP Trust Spanning Protocol - Google Docs",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 1
  }
}

How it works

Below is a sequence diagram illustrating the workflow of how the Trust Spanning Protocol (TSP) can enhance the C2PA implementation in a decentralized environment. The diagram includes the various stages of C2PA implementation with the appropriate actors.

C2PA Hardware/SoftwareTrust Spanning ProtocolCarol asContent ConsumerBob asContent DistributorAlice asContent CreatorC2PA Hardware/SoftwareTrust Spanning ProtocolCarol asContent ConsumerBob asContent DistributorAlice asContent CreatorC2PA manages content provenance and authenticityTSP ensures secure and authentic communicationCreate Content with C2PA ManifestRequest Secure Communication ChannelEstablish Secure ChannelSend Content with Provenance DataVerify Alice's IdentityConfirm Identity and TrustDistribute ContentRequest Content VerificationVerify Bob's IdentityConfirm Identity and TrustProvide Verified Content and Provenance

Explanation of the Workflow

  1. Content Creation: Alice, the content creator, creates content with a C2PA manifest that includes provenance data.

  2. Secure Communication: The C2PA system requests a secure communication channel from the TSP to ensure the authenticity and confidentiality of the data exchange.

  3. Content Distribution: Bob, the content distributor, receives the content along with its provenance data. He verifies Alice's identity through the TSP to ensure trust.

  4. Content Verification: Carol, the content consumer, requests verification of the content's authenticity. The C2PA system verifies Bob's identity through the TSP.

  5. Provenance Confirmation: The C2PA system provides Carol with the verified content and its provenance, ensuring that the content is authentic and trustworthy.

This diagram illustrates how TSP can enhance the security and trustworthiness of C2PA implementations in a decentralized environment by ensuring secure communication and verified identities.

Sources 
40%40%20%#1 [2]#2 [2]#3 [1]
#SourceCount
1Content Credentials : C2PA Technical Specification :: C2PA Specifications2
2C2PA Harms Modelling :: C2PA Specifications2
3C2PA Implementation Guidance :: C2PA Specifications1
Metadata 
{
  "https://c2pa.org/specifications/specifications/1.4/specs/C2PA_Specification.html": {
    "title": "Content Credentials : C2PA Technical Specification :: C2PA Specifications",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 2
  },
  "https://c2pa.org/specifications/specifications/1.0/security/Harms_Modelling.html": {
    "title": "C2PA Harms Modelling :: C2PA Specifications",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 2
  },
  "https://c2pa.org/specifications/specifications/1.2/guidance/Guidance.html": {
    "title": "C2PA Implementation Guidance :: C2PA Specifications",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 1
  }
}

Conclusion

The integration of the Trust Spanning Protocol with the Coalition for Content Provenance and Authenticity represents a significant advancement in the field of digital content authenticity. By ensuring secure communication, verifiable trust, and enhanced transparency, this integration addresses critical challenges in decentralized environments, paving the way for a more secure and trustworthy digital content ecosystem.

Sources 
40%20%20%20%#2 [2]#1 [1]#3 [1]#4 [1]
#SourceCount
1ToIP Trust Spanning Protocol - Google Docs1
2C2PA User Experience Guidance for Implementers :: C2PA Specifications2
3ToIP AIM TSP and AI for Authenticity - Google Docs1
4Content Credentials : C2PA Technical Specification :: C2PA Specifications1
Metadata 
{
  "https://docs.google.com/document/d/1DsvAOGXlMFeE6tYlcaHlitoGLbWGfromRGrvR43zsgs/edit?pli=1": {
    "title": "ToIP Trust Spanning Protocol - Google Docs",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 1
  },
  "https://c2pa.org/specifications/specifications/1.0/ux/UX_Recommendations.html": {
    "title": "C2PA User Experience Guidance for Implementers :: C2PA Specifications",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 2
  },
  "https://docs.google.com/document/d/1bsgP1LS7G6x9mxqoA3OszevmgVh9lz0YEziR9skId2A/edit?pli=1&tab=t.0": {
    "title": "ToIP AIM TSP and AI for Authenticity - Google Docs",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 1
  },
  "https://c2pa.org/specifications/specifications/1.4/specs/C2PA_Specification.html": {
    "title": "Content Credentials : C2PA Technical Specification :: C2PA Specifications",
    "date": "2024-10-28",
    "context": "C2PA",
    "group": "WIP",
    "subGroup": "Prospects",
    "count": 1
  }
}
Last changed by 
 
Steven Milstein
0
45
Published on HackMD