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This is the home of the Persistent Identifier Registration (PIR) Tool space for FAQs and release notes.

The answer to your biggest question:

As an individual metadata author, will I need to use the USGS Persistent Identifier Registration (PIR) Tool to generate a unique, persistent identifier (PID) for my metadata, and then place that identifier in my metadata record?

For many of you, the answer is NO.

Most USGS repositories and metadata aggregation managers have determined that they will provide this service to you when you submit your final metadata and data files for release.

Some USGS repositories are still making a determination of responsibility. In a few cases, the individual metadata author will need to obtain the metadata PID and also insert it correctly into their metadata file prior to its publication.

Please see the chart below for the latest information available as to the party responsible for generating the metadata PID in the PIR Tool, and inserting the PID into the metadata. We will update this chart as we receive more information.

The chart below details the responsible party for registering a PID for, and inserting the PID in, a metadata record.

If your data and metadata are submitted to….

…the repository/data system will generate your metadata identifier and insert it in your final metadata record

…YOU will need to generate your metadata PID and insert it appropriately in your metadata record prior to sending it to your repository/data system

ScienceBase (through the SB Data Release process)


Alaska Science Center Repository


Coastal & Marine Geoscience Data System


Water NSDI Node



X - for data released in Earth Explorer*

X - for all other EROS data releases*

National Geospatial Program / The National MapX

Approved non-USGS repository (metadata must be submitted by you to the Individual Metadata Upload (IMU) Tool)


If your repository/data system is not listed here, contact the manager of that system to determine how they intend to proceed with assignment of metadata persistent identifiers.

*More specific guidance will be communicated directly to EROS staff by Earth Explorer and EROS metadata WAF managers.

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