Registry Pattern

A register is a named, individually identified book of entries constituted by an instrument that names an accountable keeper and, where public, derives its powers from a referenced mandate. ISO/TC 211 separates the register owner from the register manager and the control body; UNIDROIT separates the Supervisory Authority from the Registrar; INSPIRE shows the operator can change while item URIs persist. The constitution is therefore distinct from both the operator and the storage.

Questions

1. Which instrument constitutes this register and what does it authorise the register to contain?authority
   Expected answer

   • Reference to the constituting instrument or mandate record (WM-POL-013)
   • Instrument type: statute, regulation, standard, charter, contract or internal policy
   • Date of entry into force of the constitution
2. What identifier distinguishes this register from every other register, including from the registry that operates it?identity
   Expected answer

   • Register identifier drawn from a governed scheme (binding to WM-XCT-011)
   • Register short name and official title
   • Operating registry identifier hosting the register
3. Which distinct parties hold register ownership, register management and control-body review for this register?ownership
   Expected answer

   • Owner party reference (resolved via WM-XCT-001)
   • Register manager / registrar party reference
   • Control body or designated expert reference where review is delegated
4. What happens to register identity and item references if the operating organisation changes?lifecycle
   Expected answer

   • Persistence commitment for register and item references
   • Successor-operator designation rule
   • Continuity conditions required of a manager (legal entity, funding, minimum commitment period)

Artifacts

• Register constitution recordThe durable statement of what this register is: identity, constituting instrument reference, role bindings, operating language and persistence commitment.

The register's declared subject-matter boundary, its territorial or jurisdictional reach, and how strong a completeness claim it makes. A register that claims to hold every instance of its subject supports negative inference ('not registered means not existing'); one that does not must say so, because search results are otherwise misread.

Questions

1. What classes of item does this register admit, and what closely similar items does it explicitly exclude?classification
   Expected answer

   • Admitted subject-matter description
   • Explicit exclusion list with the register that holds each excluded class
   • Derivation of the boundary from the constituting mandate
2. Over which jurisdiction, territory or namespace does this register claim authority?spatial
   Expected answer

   • Jurisdiction or territory code
   • Namespace or value-space covered where the register is non-geographic
   • Overlap statement with neighbouring registers of the same kind
3. Does absence of an entry permit a negative inference, and under what conditions?constraint
   Expected answer

   • Completeness claim level: exhaustive, compulsory-with-exceptions, voluntary or partial
   • Known coverage gaps and legacy backlog statement
   • Wording that must accompany a nil search result
4. What events compel registration, and what remains voluntary?requirement
   Expected answer

   • Compulsory registration triggers
   • Voluntary registration eligibility
   • Consequence of non-registration (unenforceability, non-opposability, penalty or none)

The rule fixing who may cause an entry to exist and how much review precedes it. RFC 8126 sets out an explicit strictness ladder from Private Use through First Come First Served and Expert Review to Standards Action, advises choosing the least strict policy that suits the register, and requires a named change controller; UNCITRAL by contrast permits registration by any authorised registrant without document lodgement.

Questions

1. Which registration policy governs each range or class of this register, and why is that strictness chosen?decision
   Expected answer

   • Policy code per item class or value range
   • Justification for any policy stricter than the minimum needed
   • Reviewer designation where expert review applies
2. Who is entitled to submit a registration request, and must the submitter be the affected subject?authority
   Expected answer

   • Eligible submitter classes
   • Whether third-party submission on behalf of a subject is permitted
   • Authorization requirement linking submitter to subject
3. Who controls later changes to an individual registered value once it exists?ownership
   Expected answer

   • Change controller value per entry
   • Escalation path when the change controller is unreachable or defunct
   • Whether change control differs from original submitter
4. May an entry be registered provisionally and later converted to permanent status?state
   Expected answer

   • Provisional registration permitted flag
   • Conversion criteria to permanent status
   • Maximum provisional duration

ISO 19135 organises a register into item classes, each fixing the attributes a conforming item must carry; RFC 8126 likewise requires a registry definition to state the required information, size, format and syntax of entries plus initial assignments and reservations. Item classes are the register's contract with submitters and consumers alike.

Questions

1. For each item class, which attributes are mandatory, which are optional, and what syntax constrains them?composition
   Expected answer

   • Attribute list per item class with cardinality
   • Value syntax, size or format constraint per attribute
   • Controlled vocabulary reference where an attribute is coded
2. Which values in this register are reserved, pre-assigned or set aside for private use?constraint
   Expected answer

   • Reserved and pre-assigned value ranges
   • Private or experimental use range with its non-registration rule
   • Initial assignment table at register creation
3. May an item class be extended by adopters, and what stays fixed under extension?interoperability
   Expected answer

   • Extensibility flag per item class
   • Attributes that may not be overridden by an extending domain register
   • Extension namespace rule
4. In which languages must item names and definitions be supplied, and which language is authoritative?quality
   Expected answer

   • Operating language of the register
   • Languages in which labels and definitions are published
   • Rule identifying the authoritative language on divergence

Artifacts

• Item class specificationPublished definition of one item class: required and optional attributes, syntax constraints, reserved ranges, extensibility and language rules.

Every entry carries an identifier that locates it in the book. ISO/TC 211 treats identifier assignment as the minimum service delegated to the register manager; ISO/IEC 11179-6 requires internationally unique item identification. What is register-owned here is the binding, the uniqueness scope and the reuse-after-retirement rule — RFC 8126 warns that reclaiming assigned values breaks deployed consumers.

Questions

1. From which governed identifier scheme is an entry identifier drawn, and who assigns the value?identity
   Expected answer

   • Scheme reference resolved through WM-XCT-011
   • Assigning role (register manager, submitter, or external authority)
   • Point in the act at which the identifier is assigned
2. Within what scope must an entry identifier be unique — the register, the registry, or globally?constraint
   Expected answer

   • Uniqueness scope code
   • Composite key structure where uniqueness is scoped
   • Collision handling rule
3. May an identifier be reassigned after its entry is retired or cancelled?exception
   Expected answer

   • Reuse permitted flag
   • Quarantine period before any reuse
   • Consultation requirement with prior assignee before reclamation
4. Is an entry identifier resolvable to a published representation, and does resolution survive operator change?interoperability
   Expected answer

   • Resolution commitment statement
   • Persistent URI pattern where published
   • Behaviour of resolution for retired and superseded entries

An entry binds a content payload to a subject. UNCITRAL notices carry grantor and secured-creditor identifiers plus a collateral description sufficient for identification, without the underlying agreement; company registers hold a file of prescribed particulars per company. Not every field is equally authoritative: some are the registered fact, others are contact or administrative carriage.

Questions

1. What real-world subject is this entry about, and how is that subject identified?identity
   Expected answer

   • Subject reference with the identifier scheme used
   • Subject description sufficient for identification where no identifier exists
   • Cardinality: one entry per subject, or many entries per subject
2. Which fields of the entry are the registered fact and which are administrative carriage?classification
   Expected answer

   • Per-field authority classification
   • Fields excluded from any reliance claim
   • Fields sourced from another register by reference rather than restated
3. May one entry cover an aggregate of subjects, and how is the aggregate delimited?composition
   Expected answer

   • Aggregate entry permitted flag
   • Delimitation rule for the aggregate
   • Effect of a change to one member of the aggregate
4. Does the entry restate content from a lodged instrument or only reference it?provenance
   Expected answer

   • Restatement versus reference policy per item class
   • Reference to the source instrument held under WM-XCT-028
   • Divergence rule when restated content conflicts with the source instrument

Artifacts

• Register entry recordThe authoritative record of one registered item: identifier, item class, subject binding, content fields, status binding, validity period and references to the acts that created and changed it.

ISO 19135 distinguishes notValid, valid, superseded, retired and invalid, exposes valid, superseded and retired publicly, keeps proposed and unaccepted items for management only, and retains no-longer-valid items so that data produced earlier can still be interpreted. INSPIRE similarly retains deprecated items for backward compatibility. The status vocabulary and its transitions are governed by WM-XCT-021; what is register-owned is the mapping from state to publication and to permitted use.

Questions

1. Which governed status vocabulary does this register bind to, and which of its values does it actually use?state
   Expected answer

   • Vocabulary reference resolved through WM-XCT-021
   • Subset of values used by this register
   • Local meaning statement for each used value
2. For each status value, is the entry exposed in the public face of the register?access
   Expected answer

   • Exposure flag per status value
   • Statuses confined to management views
   • Rule for exposing invalid or rejected items
3. For each status value, may the entry still be used to produce new data or new reliance?constraint
   Expected answer

   • Permitted-use classification per status
   • Retention justification for no-longer-valid entries
   • Warning text that must accompany a non-current entry
4. Who may cause an entry's status to change, and does that differ by status value?authority
   Expected answer

   • Authorised role per status change
   • Whether a control body or expert review is required
   • Reference to the decision record authorising the change

An entry carries several times that must not be collapsed: when the act was received and stamped, when the entry became effective in the register, the period for which registration remains effective, and when the fact it records took place. UNCITRAL limits effectiveness to a stated period extendable by amendment; Cape Town makes registrations searchable in chronological order of receipt.

Questions

1. Which distinct time values does an entry carry, and which of them is decisive for effect?temporal
   Expected answer

   • Receipt or lodgement instant
   • Registration/effectiveness instant
   • Real-world event instant where different from registration
   • Statement of which instant governs effect
2. Does registration lapse after a fixed period, and how is it extended?lifecycle
   Expected answer

   • Effectiveness period length or perpetual flag
   • Extension mechanism and its deadline
   • Consequence of lapse on effect and on publication
3. Can an entry take effect from a time earlier than its registration, and on what basis?exception
   Expected answer

   • Retroactive effect permitted flag
   • Basis for backdating (priority protection window, court order, correction)
   • Treatment of third parties who relied in the interval
4. Can the register state as at a past instant be reconstructed, and to what granularity?evidence
   Expected answer

   • As-at reconstruction supported flag
   • Time granularity of reconstruction
   • Reference to the version or event record supplying the history

ISO 19135 distinguishes replacement by an alternative (supersession) from simple withdrawal (retirement), and keeps both in the register. Continuity must be traceable in both directions, and registers of composite subjects additionally need split and merge relations so that a successor entry can be reached from any predecessor.

Questions

1. When an entry is superseded, how is the successor entry linked and is the link bidirectional?relationship
   Expected answer

   • Superseded-by and supersedes reference pairs
   • Whether both directions are stored or one is derived
   • Behaviour when a successor is itself later superseded
2. What distinguishes retirement from supersession and from invalidation in this register?classification
   Expected answer

   • Definition of each outcome in register terms
   • Which outcomes require a named successor
   • Which outcomes assert that the entry was never validly made
3. How are split and merge of a registered subject represented across entries?composition
   Expected answer

   • Split and merge relation types supported
   • Identifier policy for successor entries
   • Rule for carrying effects and priority across a split or merge
4. Are closed entries still retrievable, and by which access route?retention
   Expected answer

   • Retrieval route for closed and historical entries
   • Whether closed entries appear in ordinary search results
   • Reference to the historical-information provision authorising retention

Where a register allocates rank, the order of registration is decisive: a registered interest takes priority over later registrations and over unregistered interests regardless of knowledge, and registrations are searchable in chronological order of receipt. Priority protection windows let a search freeze rank for a short period before the act is lodged. This ordering is register-owned and must not be confused with event-log ordering.

Questions

1. Does this register allocate rank, and is rank derived from time of registration or from another criterion?constraint
   Expected answer

   • Rank-allocating flag
   • Basis of rank: receipt order, registration order, statutory class or none
   • Whether knowledge of a competing interest affects rank
2. At what granularity is the ordering stamp recorded, and how are simultaneous receipts broken?measurement
   Expected answer

   • Timestamp granularity used for ordering
   • Monotonic sequence number where timestamps can tie
   • Tie-breaking rule and its authority
3. Can a search or notice reserve rank before the substantive act is lodged?process
   Expected answer

   • Priority protection mechanism supported flag
   • Protection period length
   • Conditions under which protection is lost
4. What happens to rank when an entry is amended, corrected or superseded?exception
   Expected answer

   • Rank preservation rule per act type
   • Cases in which amendment creates a new rank position
   • Effect of rectification on the rank of intervening entries

The closed set of operations that can change a register: addition, clarification (a change that does not alter meaning), amendment, supersession, retirement, invalidation, cancellation, correction of registry error and lapse on expiry. Distinguishing clarification from amendment matters because only one of them disturbs reliance.

Questions

1. Which act types can change this register, and which are unavailable by design?classification
   Expected answer

   • Supported act type codes
   • Act types explicitly excluded and why
   • Whether lapse occurs automatically or requires an act
2. How does this register distinguish a clarification that preserves meaning from an amendment that changes it?definition
   Expected answer

   • Criterion separating clarification from amendment
   • Consequence of each for prior reliance and for rank
   • Approval path required for each
3. What makes a submitted act a duplicate of one already applied?validation
   Expected answer

   • Duplicate detection key
   • Behaviour on resubmission of an already applied act
   • Whether duplicates are rejected or recorded as no-ops
4. How does an applied act reference the request and the decision that authorised it?provenance
   Expected answer

   • Application record reference (WM-REC-009)
   • Decision record reference (WM-REC-010)
   • Handling of acts performed on the registrar's own initiative with no external request

Artifacts

• Registration act recordDurable record of one applied change to the register: act type, target entry, ordering stamp, authorising decision reference and the acting role.

Competence to apply an act is distributed across roles. ISO/TC 211 separates the register manager from the control body that reviews proposals and constrains the manager's delegated authority; UNIDROIT separates the Supervisory Authority that appoints the Registrar and approves regulations from the Registrar that operates the registry. This model records the binding, not the mandate lifecycle.

Questions

1. Which role is competent to apply each act type in this register?authority
   Expected answer

   • Role-to-act-type competence matrix
   • Acts reserved to a supervisory or control body
   • Acts a registrar may perform without external request
2. Which registrar functions are delegated, and which are reserved to the constituting authority?ownership
   Expected answer

   • Delegated function list
   • Reserved function list
   • Reference to the mandate record defining the delegation (WM-POL-013)
3. What bounded time is allowed for review before an act must be applied or refused?process
   Expected answer

   • Review response deadline
   • Total processing deadline
   • Consequence of exceeding a deadline
4. How is a reviewer's conflict of interest handled for a specific proposal?exception
   Expected answer

   • Recusal rule
   • Substitute reviewer designation
   • Record of the recusal on the act

Registers differ sharply in how much they check. A notice-filing registry accepts a notice without the underlying agreement and rejects only on narrow formal grounds; a title register examines substance before conferring a conclusive effect; a protocol registry may accept on first-come-first-served or require a permanent public specification. Examination depth is the single strongest predictor of how far an entry may be relied on.

Questions

1. How far does this register examine a submission before the entry becomes authoritative?process
   Expected answer

   • Examination depth code: none, formal completeness, expert review, substantive verification
   • Checks actually performed at each depth
   • Statement of what the register does not check
2. On what grounds may a submission be refused, and is that list exhaustive?constraint
   Expected answer

   • Enumerated rejection grounds
   • Whether the list is exhaustive or indicative
   • Whether refusal must be reasoned and communicated
3. How does examination depth constrain the effect the register may claim for an entry?decision
   Expected answer

   • Mapping from examination depth to claimable effect
   • Effects unavailable at low examination depth
   • Disclaimer text required where depth is shallow
4. Are admitted entries ever re-examined after registration, and on what trigger?quality
   Expected answer

   • Re-examination trigger list
   • Periodic revalidation interval where used
   • Outcome routes for a failed re-examination

What a register demands as grounds for an entry, expressed per item class: which evidence classes are required, whether originals or references suffice, and whether the register restates or merely points at them. Custody, verification workflow, sufficiency challenge and rationale are owned by WM-XCT-028; only the requirement and the binding sit here.

Questions

1. Which evidence classes must accompany an act for each item class in this register?requirement
   Expected answer

   • Required evidence class list per item class and act type
   • Whether references suffice or artefacts must be lodged
   • Minimum count or combination rules
2. Is lodged evidence retained inside the register, held elsewhere, or returned?retention
   Expected answer

   • Retention location for lodged evidence
   • Reference form used when evidence is held externally
   • Register policy on retaining a content hash rather than the artefact
3. Is supporting evidence inspectable to the same extent as the entry it grounds?access
   Expected answer

   • Publicity classification for evidence separate from entry content
   • Redaction requirement before any evidence disclosure
   • Route for a party with legitimate interest to obtain evidence
4. What may be registered when the required evidence cannot be produced?exception
   Expected answer

   • Qualified or provisional entry mechanism
   • Marking applied to an entry with deficient grounds
   • Time limit for perfecting the grounds

Registration may be constitutive (the right exists only once registered), declaratory (registration records a right that already exists), evidentiary (registration raises a presumption), priority-conferring (registration fixes rank), or a notice function (registration makes an interest effective against third parties). These are not mutually exclusive and each has its own commencement instant.

Questions

1. Which effects does registration in this register produce, and are they cumulative?definition
   Expected answer

   • Effect kind codes produced
   • Whether effects are cumulative or alternative per item class
   • Statutory or contractual basis for each effect
2. From which instant does each effect run, and can it differ from the registration instant?temporal
   Expected answer

   • Commencement instant per effect kind
   • Divergence rule where commencement predates registration
   • Effect duration or expiry where limited
3. What becomes of an effect when the entry is cancelled, retired or lapses?lifecycle
   Expected answer

   • Termination rule per effect kind
   • Whether termination is prospective or retroactive
   • Residual effects surviving cancellation
4. In which jurisdictions or contexts is the registered effect recognised?interoperability
   Expected answer

   • Recognition scope statement
   • Known non-recognising jurisdictions
   • Basis for cross-border recognition where it exists

Company-law disclosure makes documents opposable to third parties only once properly disclosed, and permits reliance on voluntarily published translations unless the company proves knowledge of the original; title registration makes registered proprietorship conclusive; Cape Town gives a registered interest priority irrespective of knowledge. Every regime nevertheless carries carve-outs — overriding interests, undisclosed particulars, and content the register expressly does not warrant.

Questions

1. Which register content may a third party rely on, and which content is expressly unwarranted?constraint
   Expected answer

   • Warranted content list
   • Expressly unwarranted or informational-only content
   • Notice text accompanying unwarranted content
2. What binds a subject despite not appearing in the register?exception
   Expected answer

   • Categories of interest effective without registration
   • Duty on a searcher to enquire beyond the register
   • Reference to the provision creating each carve-out
3. Must a relying party act in good faith or without notice for reliance to hold?requirement
   Expected answer

   • Good-faith or absence-of-notice condition
   • Whether actual knowledge defeats reliance
   • Evidence a relying party should preserve
4. Where content is published in several languages, which version governs a reliance claim?quality
   Expected answer

   • Authoritative language designation
   • Reliance status of published translations
   • Rule where a translation diverges from the authoritative version

Registers separate registry error (introduced by the registry itself) from submitted error (introduced by the requester), because only the first typically triggers the register's own liability. Title regimes provide for alteration and rectification with defined protection for the proprietor in possession; notice-filing regimes provide registrar correction of registry errors and amendment notices for the rest.

Questions

1. How does the register classify an inaccuracy as registry error, submitted error or a change of underlying facts?validation
   Expected answer

   • Error class codes and their tests
   • Evidence needed to establish each class
   • Consequence of each class for liability and for who bears cost
2. Who may initiate rectification, and can the registrar act without a request?process
   Expected answer

   • Eligible initiators
   • Registrar own-initiative correction powers and limits
   • Notification duties to affected parties before correction
3. Does a rectification take effect retroactively, and what protects a party who relied in the interim?exception
   Expected answer

   • Retroactivity classification per error class
   • Protection for a good-faith relying party
   • Interaction with rank of intervening entries
4. Is the erroneous content preserved and visible after rectification?retention
   Expected answer

   • Preservation rule for corrected-away content
   • Visibility of the pre-correction state and to whom
   • Reference to the version record supplying the prior state

A register that invites reliance must state what it answers for. Cape Town makes the Registrar liable in compensatory damages for loss directly resulting from registry error, omission or malfunction, while excluding liability for inaccurate information received; title regimes provide a statutory indemnity for loss from rectification or from an uncorrected mistake. Separately, an entry under challenge carries a contested marking that points at a case handled elsewhere.

Questions

1. For what failures does the register accept liability, and what is expressly excluded?authority
   Expected answer

   • Liability grounds accepted (error, omission, malfunction, unavailability)
   • Exclusions such as inaccurate information supplied by others or force majeure
   • Monetary or temporal cap on liability
2. Who may claim indemnity for loss caused by the register, and how is entitlement reduced?requirement
   Expected answer

   • Eligible claimant classes
   • Reduction for claimant fault or lack of care
   • Time limit for bringing a claim
3. How is an entry marked while it is under challenge, and what does the marking change?state
   Expected answer

   • Contested marking value and its visibility
   • Reference to the dispute case (WM-POL-010)
   • Whether the marking suspends effect, blocks further acts, or is informational only
4. On what basis is a contested marking removed?event
   Expected answer

   • Removal trigger (case closure, withdrawal, lapse of time)
   • Role competent to remove the marking
   • Record left behind after removal

Publicity is graded, not binary, and is set per attribute rather than per register. The Court of Justice held that opening beneficial-ownership data to any member of the public was a serious interference with Charter rights that went beyond what was strictly necessary, and pointed to legitimate-interest gating, defined data categories, case-by-case exemptions and accountability for accessors as the safeguards that were missing. Access decisions themselves are evaluated by WM-XCT-002 and shaped by WM-XCT-003.

Questions

1. Which publicity tier applies to each attribute of an entry?access
   Expected answer

   • Tier per attribute: open, legitimate-interest, party-only, authority-only or closed
   • Attribute groups sharing a tier
   • Basis in law or policy for each restriction
2. Where access is gated on legitimate interest, how is that interest defined for this register?privacy
   Expected answer

   • Definition of legitimate interest used
   • Categories presumed to qualify
   • Reference to the access contract that evaluates and grants (WM-XCT-002)
3. Can a registered subject obtain suppression of otherwise public content, and on what showing?exception
   Expected answer

   • Exemption grounds such as disproportionate risk of harm
   • Decision route and evidentiary threshold
   • Scope and duration of a granted suppression
4. Does bulk or machine access carry different publicity limits from individual inspection?security
   Expected answer

   • Bulk access permitted flag and its tier
   • Rate, purpose or refresh conditions attached
   • Re-identification and aggregation safeguards required

Artifacts

• Publicity regime scheduleRegister-level schedule mapping each attribute or attribute group to a publicity tier, with the legal basis for each restriction and the suppression grounds available to subjects.

Access to a public register is typically priced at cost rather than at value: company-law rules cap fees for copies at administrative cost and require core particulars to be free of charge, while registry regimes elsewhere set fees to sustain operation without unduly burdening users. Fee design is part of publicity because a prohibitive fee is a restriction by other means.

Questions

1. On what basis is a fee for register access or registration set?constraint
   Expected answer

   • Fee basis: free, administrative cost, cost recovery, or other
   • Cap or ceiling rule
   • Authority competent to set or change the fee
2. Which register content must be obtainable without charge?requirement
   Expected answer

   • Free-of-charge content list
   • Channels through which free access is provided
   • Whether free access differs between individual and bulk consumers
3. Do fees differ by requester class, channel or product type?classification
   Expected answer

   • Fee schedule dimensions
   • Concessions or waivers and their grounds
   • Whether certification attracts a separate fee

A register is only as usable as its index. UNCITRAL requires the registry record to be indexed and searchable by the criteria that make notices findable — chiefly the grantor identifier — and Cape Town requires registrations to be searchable in chronological order of receipt. Where matching is exact, a small error in the indexed key can hide an entry entirely, so the register must state its matching rule and what a nil result means.

Questions

1. By which keys can the register be searched, and which key is authoritative for a definitive search?identity
   Expected answer

   • Supported search key list
   • Authoritative key for a definitive or priority search
   • Keys deliberately not offered and why
2. Is matching exact, normalised or fuzzy, and who bears the risk of a near-miss?validation
   Expected answer

   • Matching rule per key
   • Normalisation applied before matching
   • Allocation of risk for an entry missed through a defective key
3. What does an empty search result assert, and what does it not assert?evidence
   Expected answer

   • Wording accompanying a nil result
   • Interaction with the register's completeness claim
   • Excluded categories such as pending acts or overriding interests
4. To which instant is a search result current, and is there a gap for pending acts?temporal
   Expected answer

   • As-at instant of the result
   • Existence and length of any pending-act window
   • Disclosure of the pending window to the searcher

Artifacts

• Registry search certificateIssued record of a search: the criteria used, the as-at instant, the entries returned or an express statement that none exist, and the completeness bounds of the result.

A certified extract is the registrar's attestation that stated content corresponded to the register at a stated instant. Company-law rules entitle a requester to certified or uncertified copies obtainable electronically; title regimes make official copies admissible in evidence to the same extent as the original. The shape and field selection of the extract are owned by WM-XCT-003; what is register-owned is the attestation, the as-at instant and the evidential claim.

Questions

1. What exactly does the registrar attest when certifying an extract?evidence
   Expected answer

   • Attestation wording and its scope
   • Whether the attestation covers correctness or only correspondence to the register
   • Signature, seal or equivalent authenticity mark applied
2. To which instant does a certified extract speak, and how long does it remain usable?temporal
   Expected answer

   • As-at instant recorded on the extract
   • Validity or currency period for reliance purposes
   • Whether pending acts are disclosed on the extract
3. What evidential status does the extract carry before a court or counterparty?authority
   Expected answer

   • Admissibility statement
   • Equivalence to the original register record
   • Jurisdictions in which the status is recognised
4. How can a recipient verify that an extract is genuine and unmodified?security
   Expected answer

   • Verification route offered by the registry
   • Integrity value published with the extract
   • Behaviour when verification fails or the extract is superseded

Artifacts

• Certified register extractAuthenticated reproduction of specified register content as at a stated instant, bearing the registrar's attestation and an integrity value for verification.

A registry is the operating environment that holds one or more registers and offers registration and search services. Its properties — availability, service hours, operating language, publication endpoints and the commitment that references keep resolving after an operator change — are separable from the constitution of any register it hosts.

Questions

1. Which registers does this registry hold, and can a register move between registries?composition
   Expected answer

   • Hosted register list
   • Portability rule for a register
   • Effect of a move on item references
2. What availability and service-hour commitments does the registry make?quality
   Expected answer

   • Availability target and measurement window
   • Service hours where registration is time-critical
   • Treatment of acts received during an outage for ordering purposes
3. What continuity commitments protect published references if the operator changes?lifecycle
   Expected answer

   • Persistence commitment for item references
   • Successor arrangements and escrow of register content
   • Minimum operator qualification and commitment period
4. Through which stable endpoints is register content published, and in what representations?interoperability
   Expected answer

   • Publication endpoint list
   • Representations offered per endpoint
   • Deprecation policy for an endpoint

An authoritative record is expected to be authentic, reliable, complete and unaltered, and usable — locatable and interpretable for as long as needed. For a register these general properties become measurable: coverage against the declared field of application, lag between a real-world change and its registration, backlog of unapplied acts, and rate of established registry error.

Questions

1. How is the lag between a real-world change and its appearance in the register measured and reported?measurement
   Expected answer

   • Lag metric definition and unit
   • Measurement window and sampling method
   • Published target and current value
2. How is coverage against the declared field of application quantified?quality
   Expected answer

   • Coverage metric definition
   • Reference population used as denominator
   • Known systematic gaps
3. Is the rate of established registry error tracked and published?validation
   Expected answer

   • Error rate definition and error classes counted
   • Reporting frequency and audience
   • Remediation threshold triggering review
4. What ensures register content remains interpretable after schema or vocabulary change?retention
   Expected answer

   • Retention of superseded item classes and vocabularies
   • Migration or conversion policy for stored content
   • Documentation kept alongside historical entries

Artifacts

• Register quality statementPeriodic statement of coverage, currency lag, backlog and established error rate for a register, with metric definitions and known systematic gaps.

Registers reference one another: an entry in one register may cite an identifier maintained in another, and independent registers may participate in an interconnection that distributes information in a standard message format. This model records which external register a reference resolves against and what freshness is expected; topology, routing, mirroring and drift are owned by WM-XCT-018.

Questions

1. Which external registers does this register cite, and for which fields?relationship
   Expected answer

   • External register reference list with the fields resolved against each
   • Whether values are restated locally or resolved on demand
   • Behaviour when the external register is unavailable
2. When a locally held value conflicts with the external register that owns it, which prevails?decision
   Expected answer

   • Precedence rule per referenced field
   • Detection route for divergence
   • Correction path once divergence is detected
3. Does this register participate in an interconnection or mirroring arrangement, and in what role?interoperability
   Expected answer

   • Participation role: authoritative node, mirror or consumer
   • Reference to the federation arrangement (WM-XCT-018)
   • Expected freshness of any mirrored copy
4. Which identifier allows this register's entries to be matched unambiguously across borders or systems?identity
   Expected answer

   • Cross-system identifier used and its governing scheme
   • Scope in which the identifier is unequivocal
   • Fallback matching attributes where the identifier is absent

Several standards describe registers in overlapping but non-identical terms: ISO 19135 uses register manager, control body and item status; ISO/IEC 11179-6 separates registration status from administrative status and adds submitting organization and stewardship; RFC 8126 uses registration policy and change controller. These are alignments, not conformance claims, and their disagreements must be recorded rather than smoothed over.

Questions

1. Which external registry vocabularies does this register align to, and at which version?interoperability
   Expected answer

   • Aligned standard or vocabulary list with version
   • Scope of each alignment (roles, statuses, policies, message formats)
   • Statement that alignment is not a conformance claim
2. How do local role and status terms map onto each aligned vocabulary?definition
   Expected answer

   • Term-by-term crosswalk with mapping strength
   • Terms with no counterpart in an aligned vocabulary
   • Directionality of each mapping
3. Where aligned vocabularies disagree, which disagreement is recorded and how is it resolved locally?exception
   Expected answer

   • Recorded conflict list
   • Local resolution chosen and its justification
   • Impact of the conflict on exchanged data
4. What evidence would be needed before a conformance claim to an aligned standard could be made?evidence
   Expected answer

   • Conformance test or assessment referenced by the standard
   • Artefacts that would have to be produced
   • Party competent to assert or certify conformance

Artifacts

• Registry alignment profileDeclared alignments to external registry vocabularies with a term crosswalk, recorded conflicts, local resolutions and an explicit statement that no conformance is claimed without assessment evidence.