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4.2.4.1.1 Have unique identifiers

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  TDR 3.0 Organizational Infrastructure
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  - 3.1 Governance and Organizational Viability
    
    3.1.1 Mission Statement
    
    3.1.2 Preservation strategic plan
    
    3.1.2 Preservation strategic plan
    
    3.1.2.1 Succession, contingency, escrow plans
    
    3.1.2.2 Monitor environment for succession triggers
    
    3.1.3 Collection Policy
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    3.2.1 Identified duties and appointed staff
    
    3.2.1 Identified duties and appointed staff
    
    3.2.1.1 Identified and established duties
    
    3.2.1.2 Appropriate number of staff
    
    3.2.1.3 Professional Development Program
  - 3.3 Procedural Accountability and Policy Framework
    
    3.3.1 Designated community
    
    3.3.2 Preservation policies
    
    3.3.2 Preservation policies
    
    3.3.2.1 Review and update preservation policies
    
    3.3.3 Documented history of changes
    
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    3.5.1 Contracts or deposit agreements for content
    
    3.5.1 Contracts or deposit agreements for content
    
    3.5.1.1 Agreements for preservation rights
    
    3.5.1.2 Completeness of agreements with depositors
    
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    3.5.1.4 Policies about liability and rights challenges
    
    3.5.2 Track and manage property rights/restrictions
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  TDR 4.0 Digital Object Management
  - Overview
  - 4.1 Ingest: Acquisition of Content
    
    4.1.1 Content information and information properties
    
    4.1.1 Content information and information properties
    
    4.1.1.1 Identification of information properties
    
    4.1.1.2 Record of content information
    
    4.1.1.3 Identification of Preservation Objectives
    
    4.1.1.4 Record of Preservation Objectives
    
    4.1.2 Information required at deposit
    
    4.1.3 Recognition and parsing of SIPs
    
    4.1.4 Verification of Producer
    
    4.1.5 Verification of SIP
    
    4.1.6 Control over digital objects
    
    4.1.7 Communication with producer/depositor
    
    4.1.8 Acquisition records
  - 4.2 Ingest: Creation of the AIP
    
    4.2.1 Definition for each AIP or class
    
    4.2.1 Definition for each AIP or class
    
    4.2.1.1 Definition of each AIP
    
    4.2.1.2 Identify which definition applies to which AIP
    
    4.2.2 Description of how AIPs are constructed from SIPs
    
    4.2.3 Document final disposition of all SIPs
    
    4.2.3 Document final disposition of all SIPs
    
    4.2.3.1 Procedures for SIPs not incorporated
    
    4.2.3.2 Convert SIP components into AIP components
    
    4.2.3.3 Add conversion provenance to AIPs
    
    4.2.4 Persistent unique identifiers for AIPs
    
    4.2.4 Persistent unique identifiers for AIPs
    
    4.2.4.1 Uniquely identify each AIP
    
    4.2.4.1 Uniquely identify each AIP
    
    4.2.4.1.1 Have unique identifiers
    
    Table of contents
    
    Requirement Text
    
    Evidence Provided
    
    4.2.4.1.2 Assign and maintain persistent identifiers
    
    4.2.4.1.3 Processes for identifier changes
    
    4.2.4.1.4 List identifiers and check duplicates
    
    4.2.4.1.5 Identifiers adequate now and in future
    
    4.2.4.2 Linking and resolution services
    
    4.2.5 Authoritative Representation Information
    
    4.2.5 Authoritative Representation Information
    
    4.2.5.1 Identify file types
    
    4.2.5.2 Determine necessary Representation Information
    
    4.2.5.3 Access to requisite Representation Information
    
    4.2.5.4 Persistently associate Representation Information
    
    4.2.6 Acquiring PDI for Content Data Objects
    
    4.2.6 Acquiring PDI for Content Data Objects
    
    4.2.6.1 Documented processes for acquiring PDI
    
    4.2.6.2 Execute documented processes for acquiring PDI
    
    4.2.6.3 PDI persistently associated with content
    
    4.2.7 Content Information understandable at creation
    
    4.2.7 Content Information understandable at creation
    
    4.2.7.1 Testing understandability
    
    4.2.7.2 Execute testing process
    
    4.2.7.3 Remediate if understandability fails
    
    4.2.8 Verify each AIP for completeness and correctness
    
    4.2.9 Independent integrity verification
    
    4.2.10 Contemporaneous records of AIP creation
  - 4.3 Preservation Planning
    
    4.3.1 Documented preservation strategies
    
    4.3.2 Monitoring the preservation environment
    
    4.3.2 Monitoring the preservation environment
    
    4.3.2.1 Notify on inadequate Representation Information
    
    4.3.3 Change preservation plans from monitoring
    
    4.3.3 Change preservation plans from monitoring
    
    4.3.3.1 Gather extra Representation Information
    
    4.3.4 Evidence of preservation effectiveness
    
    4.3.5 Documented AIP export plan
  - 4.4 AIP Preservation
    
    4.4.1 Bit-level storage specifications
    
    4.4.1 Bit-level storage specifications
    
    4.4.1.1 Content Information preservation
    
    4.4.1.2 Monitoring integrity of AIPs
    
    4.4.2 AIP storage and preservation records
    
    4.4.2 AIP storage and preservation records
    
    4.4.2.1 AIP procedures
    
    4.4.2.2 Compliance with specification
  - 4.5 Information Management
    
    4.5.1 Minimum discovery information requirements
    
    4.5.2 Descriptive information for each AIP
    
    4.5.3 Bi-directional AIP and description linkages
    
    4.5.3 Bi-directional AIP and description linkages
    
    4.5.3.1 Maintaining Associations
  - 4.6 Access Management
    
    4.6.1 Comply with Access Policies
    
    4.6.1 Comply with Access Policies
    
    4.6.1.1 Log access management failures
    
    4.6.2 Dissemination traceable to originals
    
    4.6.2 Dissemination traceable to originals
    
    4.6.2.1 Act on problem reports from users
- TDR 5.0 Infrastructure and Security
  TDR 5.0 Infrastructure and Security
  - Overview
  - 5.1 Technical Infrastructure Risk Management
    
    5.1.1 Manage risks to preservation operations
    
    5.1.1 Manage risks to preservation operations
    
    5.1.1.1 Employ technology watches
    
    5.1.1.1 Employ technology watches
    
    5.1.1.1.1 Appropriate hardware technologies
    
    5.1.1.1.2 Monitor hardware change notifications
    
    5.1.1.1.3 Evaluate hardware changes
    
    5.1.1.1.4 Funding to replace hardware
    
    5.1.1.1.5 Appropriate software technologies
    
    5.1.1.1.6 Monitor software change notifications
    
    5.1.1.1.7 Evaluate software changes
    
    5.1.1.1.8 Funding to replace software
    
    5.1.1.2 Adequate backup support
    
    5.1.1.3 Detect bit corruption or loss
    
    5.1.1.3 Detect bit corruption or loss
    
    5.1.1.3.1 Record and report corruption incidents
    
    5.1.1.4 React to new security updates
    
    5.1.1.5 Storage media and hardware change
    
    5.1.1.6 Documented critical processes
    
    5.1.1.6 Documented critical processes
    
    5.1.1.6.1 Change management process
    
    5.1.1.6.2 Test effect of process changes
    
    5.1.1.7 Risk plan for failures affecting copies
    
    5.1.2 Manage number and location of copies
    
    5.1.2 Manage number and location of copies
    
    5.1.2.1 Ensure copies are synchronized
  - 5.2 Security Risk Management
    
    5.2.1 Systematic security risk analysis
    
    5.2.2 Controls for defined security risks
    
    5.2.3 Staff roles and authorizations
    
    5.2.4 Disaster preparedness and recovery plan
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Table of contents

Requirement Text
Evidence Provided

4.2.4.1.1 Have unique identifiers

Requirement Text

The repository shall have unique identifiers.

Evidence Provided

APTrust identifiers are unique.

See section 4.2.4.

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