For Identifiers (just the complete URI and local part, not about mechanisms)
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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HDL |
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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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