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system | permanent | permanently resolve to a digital object | unique within our PID system without the DNS name portion of the URL | works with VIVO, arXiv, OAIS (CUL), Voyager Catalog, and WorldCat etc. | resolvable through a web browser | Simplicity | support for a local namespace prefix and an identifier part | support for opaque identifiers | Local part should not be Cornell branded | may be surrogate for physical object | should be short (so use 26 letters plus numbers) | should be easy to copy by hand |
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PURL |
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PURLz |
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For Resolver and System
system | Supports billions of identifiers | Robust architecture | Robust implementation | ability to request metadata about the identifier | lightweight understanding of identifier equivalence | should be easily discoverable by Google | integrate well with the "web architecture" | PID corresponding to every Cornell NetID | useful error when check digit is wrong. | vitality checking | Need to avoid unbounded generation of surrogate persistent identifiers |
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PURLz |
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