digital object identifier

Candidate boundaries

Record the original text, proposed prefix and suffix, and any unresolved boundary ambiguity.

1. Which characters belong to the DOI name rather than a label, URL wrapper or surrounding citation? boundary
2. Could apparent trailing punctuation or an encoded character be part of the suffix? definition

Comparison transformations

Record reversible extraction steps and the applicable comparison rule without treating guessed repairs as confirmed identifiers.

1. Which decoding and case-comparison rules apply to these exact representations? definition
2. If the input is a shortDOI alias, what full DOI does the alias service establish? provenance
3. Can the agent establish equivalence without dropping potentially meaningful characters? action

Registration confirmation

Record the queried authority, environment, result and observation time.

1. Which authoritative response confirms assignment of this exact DOI? provenance
2. Does a negative result concern this service or environment only, or establish something broader? boundary

Responsible service

Record evidenced responsibility and the route for registration questions or corrections.

1. Which evidence identifies the current agency and record maintainer? provenance
2. What service or contact accepts corrections for this DOI? action
3. Does the evidence distinguish an original registrant from the current maintainer? boundary

Referent boundary

Record enough referent description to distinguish the intended entity from neighbouring versions and parts.

1. What entity does the registration metadata declare this DOI to identify? definition
2. Does it identify a concept, a specific version, a manifestation, a component or a collection? boundary
3. What evidence connects the object in the agent's task to that declared entity? provenance

Identifier relationship evidence

Record claimed equivalence, version, part and other relationships with their asserted direction and source.

1. Are these DOI names asserted to identify the same entity, or entities related by version, part or another relationship? boundary
2. Who asserted the relationship, and what evidence supports it? provenance
3. Should the agent retain distinct identities, select a task-appropriate DOI or flag a suspected duplicate assignment? action

Retrieval context

Record the service, response format, retrieval time and whether a record is authoritative, mirrored or transformed.

1. Was this description obtained from the registration agency, a resolver representation, a landing page or an aggregator? provenance
2. Which schema or transformation determines how its fields should be interpreted? definition

Identity agreement

Record missing or conflicting identity-bearing assertions without silently combining incompatible records.

1. Which assertions distinguish the referent sufficiently for this task? boundary
2. Which titles, creators, dates, types or version assertions disagree across the retrieved evidence? measurement
3. Can the agent proceed with qualified evidence, or must it obtain clarification from the maintainer? action

Resolution result

Record the resolver, request time, requested representation, response and redirect chain where applicable.

1. Which resolver and request parameters produced this result? provenance
2. Did the request produce a response, an identifier-not-found result, a service failure or a network failure? measurement
3. Does the task require ordinary navigation or a metadata representation supported by this service? action

Destination fit

Assess referent correspondence, access barriers and status notices independently of redirect success.

1. Does the destination identify the declared referent, provide a status notice, or lead somewhere unrelated? boundary
2. Is the result a landing page, content, metadata, an access challenge or an error? measurement
3. Should the agent follow an evidenced alternate route, retry later or report a destination problem? action

Binding continuity

Separate record correction and relocation from changes that require an agency-specific identity decision.

1. Does the proposed change preserve the declared referent or identify a distinguishable entity? boundary
2. Which agency or community policy governs whether this change requires another DOI? provenance
3. Is an apparent withdrawal or replacement a statement about the referent, the destination or the registration record? definition

Record change authority

Record the actor's authority, intended metadata or destination change, and evidence needed to confirm completion.

1. What authorisation permits this actor to change this DOI's specific records? provenance
2. Which supported operation corrects the problem while preserving the intended referent binding? action
3. Which subsequent agency response and resolution check would establish that the requested change took effect? measurement

Kinds and varieties

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these kinds and varieties hold for the sense of digital object identifier this model covers, and on what evidence? provenance

Identifiers and schemes

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these identifiers and schemes hold for the sense of digital object identifier this model covers, and on what evidence? provenance

Standards and regulation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these standards and regulation hold for the sense of digital object identifier this model covers, and on what evidence? provenance

Real-world use

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these real-world use hold for the sense of digital object identifier this model covers, and on what evidence? provenance

Typical measurements

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these typical measurements hold for the sense of digital object identifier this model covers, and on what evidence? provenance

Failure modes and hazards

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these failure modes and hazards hold for the sense of digital object identifier this model covers, and on what evidence? provenance

Regional variation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these regional variation hold for the sense of digital object identifier this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of digital object identifier this model covers, and on what evidence? provenance