• Description: refers to the extended topic of a resource by means of
several full sentences.
• Identifier: refers to any internal or external reference number
attached to a resource.
• Coverage: refers to any spatial location relevant to a resource;
• Rights: refers to any person, organization or service holding rights
over a resource.
• Audience: refers to any class of people for which a resource is
intended; and
• Provenance: refers to a description of the changes in ownership
and custody of a resource.84
Automatic Embedment of Metadata
When creating digital content, the medium used to create such
information will also automatically embed metadata into the resource itself.
Digital cameras, mobile phones, and other video devices automatically
embed into the created content information on device settings and
specifications, date and time of creation, and, if enabled, location of creation
through GPS receivers. This embedded metadata can be instrumental to
establish the reliability and authenticity of the digital information provided.
Therefore, unofficial investigators should check and if possible document
the internal settings of the device used to ensure accurate embedding of
metadata.85
Be aware, though, that embedded metadata is not infallible. Metadata
such as date, time and location of creation can easily be manipulated by
changing the settings of a device. Furthermore, when digital content is
transmitted or migrated to other devices or platforms, such as YouTube,
Facebook or Twitter for example, it is often standardized for uploading
purposes, by which (much of) the embedded metadata is corrupted or
deleted from the original file and often cannot be restored.
Make sure therefore to store a copy of the information as close to the
original format as possible and avoid migrating the information as much as
possible. An accurate record on the chain of custody will enable
investigators to determine the likelihood of metadata corruption, similar to
84
Dublin Core metadata initiative, User Guide/Creating Metadata, (Jan. 6, 2012).
WITNESS, Video as Evidence Field Guide, (2016), available at https://vae.witness.org/video-asevidence-field-guide/.
85
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