1. Corporation For National Research Initiatives DOIs and the Handle System: Current Tech Issues 5 August 1998 Larry Lannom CNRI

2. Corporation For National Research Initiatives Handle System Resolver u Extension (like a plug-in) for web browsers that allows them to talk directly to HS u Recognizes hdl:10.123/456 as a handle, which would then replace http://dx.doi.org/10.123/456 u Download, with clickable license, from http://www.handle.net u Supports Netscape (3.0+) and IE (3.0+) for PC and Mac. Unix coming soon. u See handle web site for examples

3. Corporation For National Research Initiatives New Batch Load Process u File upload of no more than 1 Mb, but seems to work best with a max of 5K DOIs u Format of one DOI = one URL –10.1000/7983473875 http://www.doi.org/news.html u Beta usage provided some feedback - improve error msgs u Edits are not atomic (delete then add) u SSL constraint - must go through browser u Future solutions –Java SSL compatibility –New HS admin protocol

4. Corporation For National Research Initiatives Services Against Identifiers u The get paradigm –[identifier = hyperlink = click on it = get it] –resolution system + id allows only one action: return an object –difficult to group objects, differentiate versions, formats, actions, etc. u The services paradigm –allow complex resolution: selection from a group of values associated with one id –allows services to be built, e.g., describe, purchase, rights, format, around a single identifier for a given creation

5. Corporation For National Research Initiatives Get It Repository (acme.com web site) Handle System Client understands the Handle System Protocol Client takes what it gets Get 10.123/456 10.123/456 http://acme.com/file.htmlURL URL for 10.123/456 Client http get for file.html at acme.com

6. Corporation For National Research Initiatives Services Against Identifiers: Scenario I Client repository (acme.com web site) Client understands the Handle System Protocol PDF is a separate type Client needs a PDF file. Handle System PDF HTML Purchasehttp:/acme.com/cgi-bin/buy/file7.html http:/acme.com/file7.html http:/acme.com/file7.pdf 10.123/456 Handle_get_PDF_value _for_hdl:10.123/456 URL for http:/acme.com/file7.pdf http get http:/acme.com/file7.pdf

7. Corporation For National Research Initiatives Services Against Identifiers: Scenario II Repository Handle System Client understands the Handle System Protocol and RAP. Client needs a PDF file. get_location_for_all_services _for_hdl:10.123/456 10.123/456 345hfkgk4539fkr32uw828e9dkwDLS Repository access information Client Repository Access Protocol for PDF version of 10.123/456

8. Corporation For National Research Initiatives Local Resolution of Global Ids Web Browser Local Client Local collection Global Resolution System hdl:10.123/456 10.123/456 = http://local/abc.html redirect - http://local/abc.html http://local/abc.html www.pub.com Local Network/Environment (Harvard) Cache/Proxy

9. Corporation For National Research Initiatives Local Resolution of Global Ids Web Browser Local Client Local collection Global Resolution System hdl:10.789/abc http://www.pub.com/abc.html www.pub.com hdl:10.789/abc http://www.pub.com/abc.html abc.html Cache/Proxy ? Local Network/Environment (Harvard)

10. Corporation For National Research Initiatives Web Browser Local Client Local collection Local Network/Environment (Harvard) Cache/Proxy hdl:10.123/456 redirect - http://IV/abc.html http://IV/abc.html Cache/Proxy Local Network/Environment (Ivy League) www.pub.com Local Resolution of Global Ids Global Resolution System

11. Corporation For National Research Initiatives Http://www.pub1.com/1b/ Electronic version of Journal of New Physics published by Famous Science Publishing Co. Handle Data and Metadata DOI: 10.XXXX/1234 URL: http://www.pub1.com/1b/ JN: Journal of New Physics TI: New Horizons AU: Bill Smith PG: 786-980 AB: Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diem nonummy nibh euismod. Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diem nonummy nibh euismod Metadata Collection and DOI Registration

12. Corporation For National Research Initiatives Wholesale Metadata Collection Metadata Handle System Handle Data Other Data Services Handle data and metadata Metadata Collection and DOI Registration Collection Service Collection Service Indexes Filters Queries VARs

13. Corporation For National Research Initiatives Wholesale Metadata Collection Metadata Handle System Handle Data Other Data Collectors Handle data and metadata records Publisher 1Publisher 2Publisher 3Publisher n Metadata Collection and DOI Registration Collection Service Collection Service Indexes Filters Queries VARs

14. Corporation For National Research Initiatives Client Handle System Value Added Resellers Publisher 1 Publisher 2 Publisher 3Publisher n Publisher Collections Digital Object Architecture