Persistent identifiers (PIDs)

[julsraemy]

Our URIs, and especially those related to the digital objects, should be persistent. I suggest to assign Archival Resource Keys (ARKs) as they can be easily used in conjunction with the IIIF URI syntax:

Syntax	URI
ARK	[https://NMA/]ark:NAAN/Name[Qualifier]
IIIF Image Request	{scheme}://{server}{/prefix}/{identifier}/{region}/{size}/{rotation}/{quality}.{format}
IIIF Image Information	{scheme}://{server}{/prefix}/{identifier}/info.json
IIIF Resource (Manifest)	{scheme}://{host}/{prefix}/{identifier}/manifest
ARK+IIIF Example 1 a	https://iiif.participatory-archives.ch/ark:NAAN/<imageID>/full/max/0/default.jpg
ARK+IIIF Example 1 b	https://iiif.participatory-archives.ch/ark:NAAN/<imageID>/info.json
ARK+IIIF Example 2	https://iiif.participatory-archives.ch/ark:NAAN/<objectID>/manifest.json

Existing implementations that use IIIF in conjunction with ARK identifiers:

• French National Library: https://api.bnf.fr/api-iiif-de-recuperation-des-images-de-gallica
• Durham University Library: https://www.durhampriory.ac.uk/about-the-project/technology/ark-urls/

[julsraemy]

Cf. https://github.com/Participatory-Image-Archives/ark