The PLUS License Data Format ("LDF") is an ordered group of fields available for optional use in embedding and reading image license metadata in digital files and other documents.

• Exiv2 keys are Xmp.plus.<Property>
• The schema namespace URI is http://ns.useplus.org/ldf/xmp/1.0/
• The preferred schema namespace prefix is plus

Reference: PLUS Technical Specification

Property	Label	Value type	Exiv2 type	Category	Description
Version	PLUS Version	Text	XmpText	External	The version number of the PLUS standards in place at the time of the transaction.
Licensee	Licensee	seq LicenseeDetail	XmpSeq	External	Party or parties to whom the license is granted by the Licensor/s under the license transaction.
LicenseeID	Licensee ID	Text	XmpText	External	Optional PLUS-ID identifying each Licensee.
LicenseeName	Licensee Name	ProperName	XmpText	External	Name of each Licensee.
EndUser	End User	seq EndUserDetail	XmpSeq	External	Party or parties ultimately making use of the image under the license.
EndUserID	End User ID	Text	XmpText	External	Optional PLUS-ID identifying each End User.
EndUserName	End User Name	ProperName	XmpText	External	Name of each End User.
Licensor	Licensor	seq LicensorDetail	XmpSeq	External	Party or parties granting the license to the Licensee.
LicensorID	Licensor ID	Text	XmpText	External	Optional PLUS-ID identifying each Licensor.
LicensorName	Licensor Name	ProperName	XmpText	External	Name of each Licensor.
LicensorStreetAddress	Licensor Address	Text	XmpText	External	Licensor street address.
LicensorExtendedAddress	Licensor Address Detail	Text	XmpText	External	Additional Licensor mailing address details.
LicensorCity	Licensor City	Text	XmpText	External	Licensor City name.
LicensorRegion	Licensor State or Province	Text	XmpText	External	Licensor State or Province name.
LicensorPostalCode	Licensor Postal Code	Text	XmpText	External	Licensor Postal Code or Zip Code.
LicensorCountry	Licensor Country	Text	XmpText	External	Licensor Country name.
LicensorTelephoneType1	Licensor Telephone Type 1	URL	XmpText	External	Licensor Telephone Type 1.
LicensorTelephone1	Licensor Telephone 1	Text	XmpText	External	Licensor Telephone number 1.
LicensorTelephoneType2	Licensor Telephone Type 2	URL	XmpText	External	Licensor Telephone Type 2.
LicensorTelephone2	Licensor Telephone 2	Text	XmpText	External	Licensor Telephone number 2.
LicensorEmail	Licensor Email	Text	XmpText	External	Licensor Email address.
LicensorURL	Licensor URL	URL	XmpText	External	Licensor world wide web address.
LicensorNotes	Licensor Notes	Lang Alt	LangAlt	External	Supplemental information for use in identifying and contacting the Licensor/s.
MediaSummaryCode	PLUS Media Summary Code	Text	XmpText	External	A PLUS-standardized alphanumeric code string summarizing the media usages included in the license.
LicenseStartDate	License Start Date	Date	XmpText	External	The date on which the license takes effect.
LicenseEndDate	License End Date	Date	XmpText	External	The date on which the license expires.
MediaConstraints	Media Constraints	Lang Alt	LangAlt	External	Constraints limiting the scope of PLUS Media Usage/s included in the license to particular named media or to media not yet specifically defined in the PLUS Media Matrix.
RegionConstraints	Region Constraints	Lang Alt	LangAlt	External	Constraints limiting the scope of geographic distribution to specific cities, states, provinces or other areas to be included in or excluded from the PLUS Regions specified in the Media Usages specified in the license.
ProductOrServiceConstraints	Product or Service Constraints	Lang Alt	LangAlt	External	Constraints limiting usage of the image to promotion of/association with a named product or service.
ImageFileConstraints	Image File Constraints	bag URL	XmpBag	External	Constraints on the changing of the image file name, metadata or file type.
ImageAlterationConstraints	Image Alteration Constraints	bag URL	XmpBag	External	Constraints on alteration of the image by cropping, flipping, retouching, colorization, de-colorization or merging.
ImageDuplicationConstraints	Image Duplication Constraints	URL	XmpText	External	Constraints on the creation of duplicates of the image.
ModelReleaseStatus	Model Release Status	URL	XmpText	External	Summarizes the availability and scope of model releases authorizing usage of the likenesses of persons appearing in the photograph.
ModelReleaseID	Model Release ID	bag Text	XmpBag	External	Optional identifier associated with each Model Release.
MinorModelAgeDisclosure	Minor Model Age Disclosure	URL	XmpText	External	Age of the youngest model pictured in the image, at the time that the image was made.
PropertyReleaseStatus	Property Release Status	URL	XmpText	External	Summarizes the availability and scope of property releases authorizing usage of the properties appearing in the photograph.
PropertyReleaseID	Property Release ID	bag Text	XmpBag	External	Optional identifier associated with each Property Release.
OtherConstraints	Other Constraints	Lang Alt	LangAlt	External	Additional constraints on the license.
CreditLineRequired	Credit Line Required	URL	XmpText	External	Attribution requirements, if any.
AdultContentWarning	Adult Content Warning	URL	XmpText	External	Warning indicating the presence of content not suitable for minors.
OtherLicenseRequirements	Other License Requirements	Lang Alt	LangAlt	External	Additional license requirements.
TermsAndConditionsText	Terms and Conditions Text	Lang Alt	LangAlt	External	Terms and Conditions applying to the license.
TermsAndConditionsURL	Terms and Conditions URL	URL	XmpText	External	URL for Terms and Conditions applying to the license.
OtherConditions	Other License Conditions	Lang Alt	LangAlt	External	Additional license conditions.
ImageType	Image Type	URL	XmpText	External	Identifies the type of image delivered.
LicensorImageID	Licensor Image ID	Text	XmpText	External	Optional identifier assigned by the Licensor to the image.
FileNameAsDelivered	Image File Name As Delivered	Text	XmpText	External	Name of the image file delivered to the Licensee for use under the license.
ImageFileFormatAsDelivered	Image File Format As Delivered	URL	XmpText	External	File format of the image file delivered to the Licensee for use under the license.
ImageFileSizeAsDelivered	Image File Size As Delivered	URL	XmpText	External	Size of the image file delivered to the Licensee.
CopyrightStatus	Copyright Status	URL	XmpText	External	Copyright status of the image.
CopyrightRegistrationNumber	Copyright Registration Number	Text	XmpText	External	Copyright Registration Number, if any, applying to the licensed image.
FirstPublicationDate	First Publication Date	Date	XmpText	External	The date on which the image was first published.
CopyrightOwner	Copyright Owner	seq CopyrightOwnerDetail	XmpSeq	External	Owner or owners of the copyright in the licensed image.
CopyrightOwnerID	Copyright Owner ID	Text	XmpText	External	Optional PLUS-ID identifying each Copyright Owner.
CopyrightOwnerName	Copyright Owner Name	ProperName	XmpText	External	Name of Copyright Owner.
CopyrightOwnerImageID	Copyright Owner Image ID	Text	XmpText	External	Optional identifier assigned by the Copyright Owner to the image.
ImageCreator	Image Creator	seq ImageCreatorDetail	XmpSeq	External	Creator/s of the image.
ImageCreatorID	Image Creator ID	Text	XmpText	External	Optional PLUS-ID identifying each Image Creator.
ImageCreatorName	Image Creator Name	ProperName	XmpText	External	Name of Image Creator.
ImageCreatorImageID	Image Creator Image ID	Text	XmpText	External	Optional identifier assigned by the Image Creator to the image.
ImageSupplierID	Image Supplier ID	Text	XmpText	External	Optional PLUS-ID identifying the Image Supplier.
ImageSupplierName	Image Supplier Name	ProperName	XmpText	External	Name of Image Supplier.
ImageSupplierImageID	Image Supplier Image ID	Text	XmpText	External	Optional identifier assigned by the Image Supplier to the image.
LicenseeImageID	Licensee Image ID	Text	XmpText	External	Optional identifier assigned by the Licensee to the image.
LicenseeImageNotes	Licensee Image Notes	Lang Alt	LangAlt	External	Notes added by Licensee.
OtherImageInfo	Other Image Info	Lang Alt	LangAlt	External	Additional image information.
LicenseID	License ID	Text	XmpText	External	Optional PLUS-ID assigned by the Licensor to the License.
LicensorTransactionID	Licensor Transaction ID	bag Text	XmpBag	External	Identifier assigned by Licensor for Licensor's reference and internal use.
LicenseeTransactionID	Licensee Transaction ID	bag Text	XmpBag	External	Identifier assigned by Licensee for Licensee's reference and internal use.
LicenseeProjectReference	Licensee Project Reference	bag Text	XmpBag	External	Project reference name or description assigned by Licensee.
LicenseTransactionDate	License Transaction Date	Date	XmpText	External	The date of the License Transaction.
Reuse	Reuse	URL	XmpText	External	Indicates whether a license is a repeat or an initial license. Reuse may require that licenses stored in files previously delivered to the customer be updated.
OtherLicenseDocuments	Other License Documents	bag Text	XmpBag	External	Reference information for additional documents associated with the license.
OtherLicenseInfo	Other License Info	Lang Alt	LangAlt	External	Additional license information.
Custom1	Custom 1	bag Lang Alt	XmpBag	External	Optional field for use at Licensor's discretion.
Custom2	Custom 2	bag Lang Alt	XmpBag	External	Optional field for use at Licensor's discretion.
Custom3	Custom 3	bag Lang Alt	XmpBag	External	Optional field for use at Licensor's discretion.
Custom4	Custom 4	bag Lang Alt	XmpBag	External	Optional field for use at Licensor's discretion.
Custom5	Custom 5	bag Lang Alt	XmpBag	External	Optional field for use at Licensor's discretion.
Custom6	Custom 6	bag Lang Alt	XmpBag	External	Optional field for use at Licensee's discretion.
Custom7	Custom 7	bag Lang Alt	XmpBag	External	Optional field for use at Licensee's discretion.
Custom8	Custom 8	bag Lang Alt	XmpBag	External	Optional field for use at Licensee's discretion.
Custom9	Custom 9	bag Lang Alt	XmpBag	External	Optional field for use at Licensee's discretion.
Custom10	Custom 10	bag Lang Alt	XmpBag	External	Optional field for use at Licensee's discretion.