(registered 2023-09-25, last updated 2023-09-25)

Media type name: application

Media subtype name: c2pa

Required parameters: N/A

Optional parameters: N/A

Encoding considerations: binary

Security considerations: This media type is based on ISO 19566-5 (JUMBF), which is part of application/jpeg (JPEG 1).

This media type does not contain any active or executable content.

There may be information contained in the media type that may be considered under privacy concerns, such as identity. However, that is not mandatory and may be redacted later on.

The media type includes a standard X.509 digital signature for integrity.

The media type is fully self-contained and no external links/references are required to process it.

Interoperability considerations: This media type is based on ISO 19566-5 (JUMBF), which is part of application/jpeg (JPEG 1). In addition, it can be embedded into other formats or stand alone.

Published specification: https://c2pa.org/specifications/specifications/1.3/specs/C2PA_Specification.html

Applications which use this media: This will be used by content capture device, content authoring and editing tools, and content display products.

Fragment identifier considerations: N/A

Restrictions on usage: N/A

Provisional registration? (standards tree only): No

Additional information:

   1. Deprecated alias names for this type: N/A
   2. Magic number(s): N/A
   3. File extension(s): .c2pa
   4. Macintosh file type code: N/A
   5. Object Identifiers: N/A

Person to contact for further information:

1. Name: Leonard Rosenthol
2. Email: lrosenth&adobe.com

Intended usage: COMMON

Author/Change controller: C2PA - Coalition for Content Provenance and Authenticity (https://c2pa.org)