Global Unique Identifiers (GUIDs) allow each record in GISIN to be identified. This allows GISIN and other databases to identify duplicate reocrds which can greatly reduce the redundancy in integrated databases. GUIDs also allow the originator of data to be identified no matter who is handling the data. GUIDs are recommended but not required by GISIN.
If you already have GUIDs with your data, you can just use them with GISIN. If you do not, you'll want to add them to your data and you can use GISIN as a GUID authority if you desire. If you would like to add your collection, please contact Russell Scarpino at email@example.com.
GUIDs in GISIN follow a standard convention of:
The following authorities, institutions, and collections are registered with GISIN.
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