CAI manifest store reference - Manifest Reference

: A User Agent formatted string identifying the software/hardware/system produced this claim Spaces are not allowed in names, versions can be specified with product/1.0 syntax

claim_generator_info

ClaimGeneratorInfo

thumbnail

ResourceRef

ingredients: Array of

Ingredient

assertions: Array of

ManifestAssertion

signature_info

SignatureInfo

ManifestStore

A Container for a set of Manifests and a ValidationStatus list..

Properties

Property	Type	Description	Required?
active_manifest	String	A label for the active (most recent) manifest in the store.	NO
manifests	Object	A HashMap of Manifests. See Manifest	YES
validation_status	Array of ValidationStatus	ValidationStatus generated when loading the ManifestStore from an asset.	NO

Definitions

Actor
AssetType
ClaimGeneratorInfo
Coordinate
DataSource
Frame
HashedUri

Ingredient
Manifest
ManifestAssertion
ManifestAssertionKind
ManifestData
Metadata
Range

RangeType
RegionOfInterest
Relationship
ResourceRef
ReviewRating
Role
Shape

ShapeType
SignatureInfo
SigningAlg
Text
TextSelector
TextSelectorRange
Time

TimeType
UnitType
UriOrResource
ValidationStatus

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Actor

Identifies a person responsible for an action.

Property	Type	Description	Required?	Default Value
credentials	Array of HashedUri	List of references to W3C Verifiable Credentials.	NO	N/A
identifier	String	An identifier for a human actor, used when the “type” is `humanEntry.identified`.	NO	N/A

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AssetType

Property	Type	Description	Required?	Default Value
type	String	Description TBD.	YES	N/A
version	String	Description TBD.	NO	N/A

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ClaimGeneratorInfo

Description of the claim generator, or the software used in generating the claim. This structure is also used for actions softwareAgent

Property	Type	Description	Required?	Default Value
icon	UriOrResource	hashed URI to the icon (either embedded or remote)	NO	N/A
name	String	A human readable string naming the claim_generator	YES	N/A
version	String	A human readable string of the product’s version	NO	N/A

NOTE: This object can have any number of additional user-defined properties.

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Coordinate

An x, y coordinate used for specifying vertices in polygons.

Property	Type	Description	Required?	Default Value
x	Number / double	The coordinate along the x-axis.	YES	N/A
y	Number / double	The coordinate along the y-axis.	YES	N/A

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DataSource

A description of the source for assertion data

Property	Type	Description	Required?	Default Value
actors	Array of Actor	A list of [`Actor`]s associated with this source.	NO	N/A
details	String	A human-readable string giving details about the source of the assertion data.	NO	N/A
type	String	A value from among the enumerated list indicating the source of the assertion.	YES	N/A

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Frame

A frame range representing starting and ending frames or pages. If both start and end are missing, the frame will span the entire asset.

Property	Type	Description	Required?	Default Value
end	Integer (int32)	The end of the frame inclusive or the end of the asset if not present.	NO	N/A
start	Integer (int32)	The start of the frame or the end of the asset if not present. The first frame/page starts at 0.	NO	N/A

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HashedUri

Hashed Uri structure as defined by C2PA spec It is annotated to produce the correctly tagged cbor serialization

Property	Type	Description	Required?	Default Value
alg	String	Description TBD.	NO	N/A
hash	An array of integer	Description TBD.	YES	N/A
url	String	Description TBD.	YES	N/A

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Ingredient

An Ingredient is any external asset that has been used in the creation of an asset.

Property	Type	Description	Required?	Default Value
active_manifest	String	The active manifest label (if one exists). If this ingredient has a `ManifestStore` , this will hold the label of the active `Manifest`.	NO	N/A
data	ResourceRef	A reference to the actual data of the ingredient.	NO	N/A
data_types	Array of AssetType	Additional information about the data’s type to the ingredient V2 structure.	NO	N/A
description	String	Additional description of the ingredient.	NO	N/A
document_id	String	Document ID from `xmpMM:DocumentID` in XMP metadata.	NO	N/A
format	String	The format of the source file as a MIME type.	NO	application/octet-stream
hash	String	An optional hash of the asset to prevent duplicates.	NO	N/A
informational_URI	String	URI to an informational page about the ingredient or its data.	NO	N/A
instance_id	String	Instance ID from `xmpMM:InstanceID` in XMP metadata.	NO	N/A
manifest_data	ResourceRef	A `ManifestStore` from the source asset extracted as a binary C2PA blob.	NO	N/A
metadata	Metadata	Any additional `Metadata` as defined in the C2PA spec.	NO	N/A
provenance	String	URI from `dcterms:provenance` in XMP metadata.	NO	N/A
relationship	Relationship	Set to `ParentOf` if this is the parent ingredient. There can only be one parent ingredient in the ingredients.	NO	componentOf
thumbnail	ResourceRef	A thumbnail image capturing the visual state at the time of import. A tuple of thumbnail MIME format (for example `image/jpeg`) and binary bits of the image.	NO	N/A
title	String	A human-readable title, generally source filename.	YES	N/A
validation_status	Array of ValidationStatus	Validation results.	NO	N/A

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Manifest

A Manifest represents all the information in a c2pa manifest

Property	Type	Description	Required?	Default Value
assertions	An array of ManifestAssertion	A list of assertions	NO	Empty array
claim_generator	String	A User Agent formatted string identifying the software/hardware/system produced this claim Spaces are not allowed in names, versions can be specified with product/1.0 syntax	NO	c2pa/0.36.3
claim_generator_info	Array of ClaimGeneratorInfo	A list of claim generator info data identifying the software/hardware/system produced this claim	NO	N/A
credentials	Array of true	A List of verified credentials	NO	N/A
format	String	The format of the source file as a MIME type.	NO	application/octet-stream
ingredients	An array of Ingredient	A List of ingredients	NO	Empty array
instance_id	String	Instance ID from `xmpMM:InstanceID` in XMP metadata.	NO	xmp:iid:eafef862-379d-44a1-99f7-2ead485e279d
label	String	Description TBD.	NO	N/A
metadata	Array of Metadata	A list of user metadata for this claim	NO	N/A
redactions	Array of string	A list of redactions - URIs to a redacted assertions	NO	N/A
signature_info	SignatureInfo	Signature data (only used for reporting)	NO	N/A
thumbnail	ResourceRef	Description TBD.	NO	N/A
title	String	A human-readable title, generally source filename.	NO	N/A
vendor	String	Optional prefix added to the generated Manifest Label This is typically Internet domain name for the vendor (i.e. `adobe`)	NO	N/A

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ManifestAssertion

A labeled container for an Assertion value in a Manifest

Property	Type	Description	Required?	Default Value
data	ManifestData	The data of the assertion as Value	YES	N/A
instance	Integer (uint) Minimum: 0.0	There can be more than one assertion for any label	NO	N/A
kind	ManifestAssertionKind	The ManifestAssertionKind for this assertion (as stored in c2pa content)	NO	N/A
label	String	An assertion label in reverse domain format	YES	N/A

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ManifestAssertionKind

A string that is one of the following:

“Cbor”
“Json”
“Binary”
“Uri”

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ManifestData

Description TBD.

Any of the following:

true
type: integer, format: uint8, minimum: 0.0

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Metadata

The Metadata structure can be used as part of other assertions or on its own to reference others

Property	Type	Description	Required?	Default Value
dataSource	DataSource	Description TBD.	NO	N/A
dateTime	String	A date time in ISO 8601 format.	NO	N/A
reference	HashedUri	Description TBD.	NO	N/A
regionOfInterest	RegionOfInterest	Description TBD.	NO	N/A
reviewRatings	Array of ReviewRating	Description TBD.	NO	N/A

NOTE: This object can have any number of additional user-defined properties.

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Range

A spatial, temporal, frame, or textual range describing the region of interest.

Property	Type	Description	Required?	Default Value
frame	Frame	A frame range.	NO	N/A
shape	Shape	A spatial range.	NO	N/A
text	Text	A textual range.	NO	N/A
time	Time	A temporal range.	NO	N/A
type	RangeType	The type of range of interest.	YES	N/A

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RangeType

The type of range for the region of interest.

RangeType	Type	Description
spatial	string	A spatial range, see `Shape` for more details.
temporal	string	A temporal range, see `Time` for more details.
frame	string	A spatial range, see `Frame` for more details.
textual	string	A textual range, see `Text` for more details.

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RegionOfInterest

A region of interest within an asset describing the change. This struct can be used from Action::changes or Metadata::region_of_interest.

Property	Type	Description	Required?	Default Value
description	String	A free-text string.	NO	N/A
identifier	String	A free-text string representing a machine-readable, unique to this assertion, identifier for the region.	NO	N/A
metadata	Metadata	Additional information about the asset.	NO	N/A
name	String	A free-text string representing a human-readable name for the region which might be used in a user interface.	NO	N/A
region	An array of Range	A range describing the region of interest for the specific asset.	YES	N/A
role	Role	A value from our controlled vocabulary or an entity-specific value (e.g., com.litware.coolArea) that represents the role of a region among other regions.	NO	N/A
type	String	A value from a controlled vocabulary such as https://cv.iptc.org/newscodes/imageregiontype/ or an entity-specific value (e.g., com.litware.newType) that represents the type of thing(s) depicted by a region. Note this field serializes/deserializes into the name `type`.	NO	N/A

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Relationship

A string that is one of the following:

“parentOf”
“componentOf”
“inputTo”

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ResourceRef

A reference to a resource to be used in JSON serialization. The underlying data can be read as a stream via Reader::resource_to_stream.

Property	Type	Description	Required?	Default Value
alg	String	The algorithm used to hash the resource (if applicable).	NO	N/A
data_types	Array of AssetType	More detailed data types as defined in the C2PA spec.	NO	N/A
format	String	The mime type of the referenced resource.	YES	N/A
hash	String	The hash of the resource (if applicable).	NO	N/A
identifier	String	A URI that identifies the resource as referenced from the manifest. This may be a JUMBF URI, a file path, a URL or any other string. Relative JUMBF URIs will be resolved with the manifest label. Relative file paths will be resolved with the base path if provided.	YES	N/A

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ReviewRating

A rating on an Assertion. See Review Ratings in C2PA spec

Property	Type	Description	Required?	Default Value
code	String	Description TBD.	NO	N/A
explanation	String	Description TBD.	YES	N/A
value	Integer (uint8) Minimum: 0.0	Description TBD.	YES	N/A

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Role

A role describing the region.

Role	Type	Description
c2pa.areaOfInterest	string	Arbitrary area worth identifying.
c2pa.cropped	string	This area is all that is left after a crop action.
c2pa.edited	string	This area has had edits applied to it.
c2pa.placed	string	The area where an ingredient was placed/added.
c2pa.redacted	string	Something in this area was redacted.
c2pa.subjectArea	string	Area specific to a subject (human or not).
c2pa.deleted	string	A range of information was removed/deleted.
c2pa.styled	string	Styling was applied to this area.
c2pa.watermarked	string	Invisible watermarking was applied to this area for the purpose of soft binding.

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Shape

A spatial range representing rectangle, circle, or a polygon.

Property	Type	Description	Required?	Default Value
height	Number (double)	The height of a rectnagle. This field can be ignored for circles and polygons.	NO	N/A
inside	Boolean	If the range is inside the shape. The default value is true.	NO	N/A
origin	Coordinate	THe origin of the coordinate in the shape.	YES	N/A
type	ShapeType	The type of shape.	YES	N/A
unit	UnitType	The type of unit for the shape range.	YES	N/A
vertices	Array of Coordinate	The vertices of the polygon. This field can be ignored for rectangles and circles.	NO	N/A
width	Number (double)	The width for rectangles or diameter for circles. This field can be ignored for polygons.	NO	N/A

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ShapeType

The type of shape for the range.

ShapeType	Type	Description
rectangle	string	A rectangle.
circle	string	A circle.
polygon	string	A polygon.

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SignatureInfo

Holds information about a signature

Property	Type	Description	Required?	Default Value
alg	SigningAlg	human readable issuing authority for this signature	NO	N/A
cert_serial_number	String	The serial number of the certificate	NO	N/A
issuer	String	human readable issuing authority for this signature	NO	N/A
revocation_status	Boolean	revocation status of the certificate	NO	N/A
time	String	the time the signature was created	NO	N/A

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SigningAlg

Describes the digital signature algorithms allowed by the C2PA spec:

All digital signatures that are stored in a C2PA Manifest shall be generated using one of the digital signature algorithms and key types listed as described in this section.

SigningAlg	Type	Description
Es256	string	ECDSA with SHA-256
Es384	string	ECDSA with SHA-384
Es512	string	ECDSA with SHA-512
Ps256	string	RSASSA-PSS using SHA-256 and MGF1 with SHA-256
Ps384	string	RSASSA-PSS using SHA-384 and MGF1 with SHA-384
Ps512	string	RSASSA-PSS using SHA-512 and MGF1 with SHA-512
Ed25519	string	Edwards-Curve DSA (Ed25519 instance only)

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Text

A textual range representing multiple (possibly discontinuous) ranges of text.

Property	Type	Description	Required?	Default Value
selectors	An array of TextSelectorRange	The ranges of text to select.	YES	N/A

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TextSelector

Selects a range of text via a fragment identifier. This is modeled after the W3C Web Annotation selector model.

Property	Type	Description	Required?	Default Value
end	Integer (int32)	The end character offset or the end of the fragment if not present.	NO	N/A
fragment	String	Fragment identifier as per RFC3023 (XML) or ISO 32000-2 (PDF), Annex O.	YES	N/A
start	Integer (int32)	The start character offset or the start of the fragment if not present.	NO	N/A

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TextSelectorRange

One or two TextSelector objects identifying the range to select.

Property	Type	Description	Required?	Default Value
end	TextSelector	The end of the text range.	NO	N/A
selector	TextSelector	The start (or entire) text range.	YES	N/A

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Time

A temporal range representing a starting time to an ending time.

Property	Type	Description	Required?	Default Value
end	String	The end time or the end of the asset if not present.	NO	N/A
start	String	The start time or the start of the asset if not present.	NO	N/A
type	TimeType	The type of time.	NO	npt

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TimeType

The type of time.

TimeType	Type	Description
npt	string	Times are described using Normal Play Time (npt) as described in RFC 2326.

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UnitType

The type of unit for the range.

UnitType	Type	Description
pixel	string	Use pixels.
percent	string	Use percentage.

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UriOrResource

Description TBD.

Any of the following:

ResourceRef
HashedUri

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ValidationStatus

A ValidationStatus struct describes the validation status of a specific part of a manifest. See https://c2pa.org/specifications/specifications/1.4/specs/C2PA_Specification.html#_existing_manifests.

Property	Type	Description	Required?	Default Value
code	String	Description TBD.	YES	N/A
explanation	String	Description TBD.	NO	N/A
url	String	Description TBD.	NO	N/A