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

2. Corporation For National Research Initiatives Naming Resources on the Net The Problem Internet chapter1.pdf www.acme.com

3. Corporation For National Research Initiatives Naming Resources on the Net The Solution Internet www.acme.com Naming Service Name = Value(s) 10.123/xyz = http://www.acme.com/chapter1.pdf http://www.acme.com/chapter1.pdf

4. Corporation For National Research Initiatives Naming Resources on the Net The Solution Internet http://www.acme2.com/chapter1.pdf Naming Service Name = Value(s) 10.123/xyz = http://www.acme2.com/chapter1.pdf www.acme.com

5. Corporation For National Research Initiatives CNRI Handle System u Distributed and Scalable u Enforces unique names u Enables association of one or more typed values, e.g., URL, with each name u Optimized for speed and reliability u Provides infrastructure for application domains, e.g., digital libraries, electronic publishing….

6. Corporation For National Research Initiatives DOIs and the Handle System u DOIs are an application of the Handle System u The Handle System is a distributed computer system for naming digital objects and storing the names and the information that is needed to locate and access these items via the Internet.

7. Corporation For National Research Initiatives Digital Object Architecture Client Repository / Collections Resolution System Search Engines Metadata Databases Catalogues, Guide, etc. Resource Discovery

8. Corporation For National Research Initiatives Handle System Initiatives u IDF (International DOI Foundation) u Library of Congress –National Digital Library Program –U.S. Copyright Office u NCSTRL (Networked Computer Science Technical Reports Library) u DTIC (Defense Technical Information Center) u USIA (U.S. Information Agency) u NMPA (National Music Publishers Association) u National Library of Medicine

9. Corporation For National Research Initiatives Handles Resolve to Typed Data Handle data loc.ndlp/amrlp.123456 URLhttp://www.loc.gov/..... HandleData type RAPloc/repository URLhttp://www.loc2.gov/.. Extensible Data Types XYZ1001110011110

10. Corporation For National Research Initiatives HS #n HS #n which may be replicated Handle Resolution Handle System GHS LHS is a collection of handle services each of which consists of one or more handle servers HS #1 HS #2 HS #3 HS #n http://www.loc.gov/..... loc.ndlp/amrlp.123456 URL http://www.loc2.gov/..... Client

11. Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle ResolutionHandle Administration

12. Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle ResolutionHandle Administration HTTP Get Resolve Handle Handle Data HTTP Redirect http://dx.doi.org/10.1015/123456 Web Server Proxy

13. Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle AdministrationHandle Resolution Handle Data Resolve Handle hdl:10.1015/123456 Browser Extension

14. Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle AdministrationHandle Resolution HTTP Handle Admin API Web Server Admin Forms

15. Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle AdministrationHandle Resolution

16. Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle Resolution Handle Administration embedded in another process

17. Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle Administration embedded in another process Handle Resolution embedded in another process

18. Corporation For National Research Initiatives http://dx.doi.org/10.123/456 hdl:10.123/456 urn:hdl:10.123/456 Handle Record Client Representation urn:hdl:10.123/%E6%97%A5%E6%9C%AC hdl:10.123/%E6%97%A5%E6%9C%AC Handle Syntax and I18N 10.123/456URLhttp://pub.com/doc.html http://10.123/%E6%97%A5%E6%9C%AC 10.123/URLhttp:/ietf.org/japan.html hdl:10.123/ (UTF-8 Encoding)