For Identifiers (just the complete URI and local part, not about mechanisms)
|
HDL |
PURLz |
---|---|---|
Yes |
? |
|
Yes |
? |
|
unique within our PID system without the DNS name portion of the |
Yes; very flexible naming, including pseudo/paths |
? |
? |
? |
|
works with VIVO, arXiv, OAIS (CUL), Voyager Catalog, and WorldCat etc. |
Yes |
? |
Yes |
? |
|
Yes |
? |
|
Yes |
Yes |
|
Yes |
Yes |
|
completely flexible |
completely flexible |
|
Yes |
? |
|
Yes |
Yes |
|
depends on the length |
depends on the length |
For Resolver and System
|
HDL |
PURLz |
---|---|---|
Don't know; limited to the practical capacity of the underlying database. |
ditto |
|
Yes |
? |
|
Yes |
? |
|
Yes |
? |
|
Yes |
? |
|
Yes; the resolvers can't be crawled without providing a dump |
? |
|
Yes |
? |
|
? |
? |
|
Need to avoid unbounded generation of surrogate persistent identifiers |
? |
? |
? |
? |
Governance Issues
|
HDL |
PURLz |
---|---|---|
one-time $50 payment per named resolver (not mirrors) |
no |
|
Can continue resolve IDs in absence of external organization |
Yes |
Yes |
HDL is Corporation of National Research Initiatives's Handle system.
PURLz is Zepheira's and OCLC's new persistent URL work.