• Preface
  • DOI System Overview
    • History and Purpose of the DOI System
    • Basic Principle: Integration of Identifier Resolution and Semantics
    • Identifier / Resolution System with the Handle System
      • DOI Name: Unique and Persistent Identifier
      • DOI Name Syntax
    • Structured Semantics Based on Strict Principles
      • Principles of the INDECS Model
      • Standard Metadata Declaration
    • Basic Resolution Services Provided by the DOI System
      • Direct Redirection to a Web Resource with the DOI Proxy
      • Additional Resolution Services Included in the DOI System
    • Value-added Services an RA can Build on the DOI System
      • Management of a Referent with Several Instances 
      • Dynamic Building of a Web Page Enriched with Metadata
    • Business and Organizational Model of the DOI System
      • Federation of Registration Agencies (RA)
      • Free Resolution Service
      • Governance Role of the DOI Foundation
      • DOI Namespace Allocation Approach
    • Standardization of the DOI System
      • ISO 26324
      • Conformance with Relevant External Standards
    • Persistence as a Design Feature of the DOI System
    • Benefits of the DOI System
      • Improved Content Management and Discovery
      • Solution to the Broken Link (Persistence)
      • Identifier Interoperability through a Powerful Metadata Model
      • Compatibility with Other Identifier Systems
      • Service Flexibility and Extensibility
      • Protected and Trusted Information
      • Information Traceability
    • Application Examples of the DOI System
  • DOI System Governance and Participation
    • DOI System Governance Body: the DOI Foundation
      • Status of the DOI Foundation
      • Overview of the DOI Foundation Roles
      • ISO 26324 Registration Authority
        • Services to be Provided by the Registration Authority
        • Technical Duties of the Registration Authority
      • Representation to Strategic Organizations
      • DOI Foundation Membership
        • Membership Obligations
        • Membership Classes
        • Membership Fees
        • Member Strategy Meetings
        • DOI Representative of a Member Organization
        • Trial Prefix
      • DOI Foundation Governance
        • Board of Directors
        • Executive Committee
        • Managing Agent
        • Board Meetings
    • DOI System Participants: Registration Agencies and Registrants
      • Roles of a Registration Agency
      • Business Model for Registration Agencies
      • Service Non-exclusivity and Competition Matters
      • RA Agreement
      • Process of Becoming a Registration Agency
      • Fee Structure for Registration Agencies
      • Registrant Roles and Duties
    • DOI System Governing Policies
      • Policy Formulation Process
      • List of Formal DOI Documents
  • DOI Namespace
    • Assignment Principles of the DOI Name
    • Syntax of the DOI Name
      • General Characteristics of the DOI Syntax
      • DOI Prefix
      • DOI Suffix
      • Character Set Supported in the DOI Name
      • Case Insensitivity of the DOI Name
      • Considerations about the Use of Check Digits in DOI Names
    • Presentation Formats of a DOI Name
      • Specific Presentation Formats of a DOI Name
    • Constraints on DOI Name Syntax in Specific Contexts
    • Integration of Other Identifier Schemes
      • Specification of another Identifier in the DOI Metadata
      • Incorporation of an Existing Identifier into a DOI Name
      • Linkage of DOI Names to Another Registry
      • Complementation of Other Identifier Services
  • DOI Metadata
    • Introduction to DOI Metadata
    • Metadata Requirements According to ISO 26324
      • General Requirements on Metadata
      • Requirements on Metadata Functions
      • Requirements on Metadata Registration
    • DOI Data Model
      • DOI Data Model Policy
        • Policy on DOI Metadata Declaration
        • Policy on DOI Name Administration
      • DOI Kernel Metadata
        • Basic Information Contained in the DOI Kernel
        • Purpose of the DOI Kernel
      • Additional Metadata
      • Data Dictionary
      • Underlying Ontology
      • Data Model Extension and Maintenance
    • Metadata Interoperability
      • Motivations for Interoperability
      • Achievement of Interoperability
    • Automated Integration of Metadata
  • DOI Identifier / Resolution Services
    • Identifier / Resolution Services Based on the Handle System
      • ISO 26234 Functional Requirements on the Resolution System
      • Introduction to the Handle Record
      • Handle System Service Architecture
        • Introduction to Prefix Handles (0.NA Prefix)
        • Global Handle Registry (GHR)
        • Local Handle Service (LHS)
    • DOI Directory
      • Local Handle Services (LHS) Used in the DOI System
      • DOI LHS Operated by a Registration Agency
    • DOI Resolvers
      • DOI Proxy
        • DOI Proxy Service Characteristics
        • DOI Proxy Resolution Function
        • DOI Proxy Maintenance Commitment
      • Custom DOI Resolvers
      • DOI REST API
    • DOI Resolution Functions
      • Single DOI Resolution
      • Multiple DOI Resolution
      • Parameter Passing
      • Content Negotiation
      • Handling of Resolution Errors in the DOI System
    • ShortDOI Service
    • Which RA? Service
  • DOI Applications
    • Introduction to DOI Applications
    • Use and Extension of the Resolution Functions
    • Applications of the 10320/LOC Element
      • Choose-by Mechanism
      • Automated Selection of an URL According to Various Criteria
    • Redirection to Linked Data Services
    • Dynamic Identification of the Fragments of an Entity
  • Designing and Developing a DOI Application
    • Checklist for Designing a DOI Application
    • Design Considerations
    • Defining an Identifier Scheme
      • Integrating Another Identifier Scheme
    • Managing DOI Metadata Schemas
      • Creating or Updating a Metadata Schema
      • Adding Terms to the DOI Kernel Schema
    • Developing a DOI Resolver
      • Developing Handle System Client Software
    • Configuring the Resolution Error Message Handling
  • Defining RA and Registrant Policies
    • Defining a Prefix Allocation Policy
    • Defining a Data Maintenance Policy
    • Defining a DOI Name Registration Policy
  • Operating and Maintaining the RA Services
    • Defining Operational Processes
      • Defining the DOI Name Registration Process
    • Managing the User Access Rights
    • Issuing Prefixes to Registrants
    • Maintaining the Resolution Services
      • Troubleshooting Resolution Problems
    • Operating Your Own LHS
      • Installing the LHS
      • Setting Up the LHS
      • LHS Operation Requirements
    • Transferring DOI Names from One Registrant to Another
    • Transferring DOI Names from One Registration Agency to Another
  • Appendix
    • DOI Kernel Schema
      • DOI Kernel Elements
    • DOI Name Encoding
      • UTF-8 Encoding of Non-ASCII Characters
      • DOI Name Encoding Rules for URL Presentation
    • DOI Proxy Query Command Format
    • DOI REST API Request and Response Formats
      • REST API Request Format
      • REST API Response Format
    • 10320/LOC Element
      • 10320/LOC: XML Attributes
      • 10320/LOC: Example
      • 10320/LOC at Prefix Level
    • Prefix Handle Example
    • System Tools
  • Glossary