OPDA Knowledge base
Logical tier claim

Assurance Level

opda:AssuranceLevel

Assurance Level

Summary

Quality judgement on a Claim’s verification — eIDAS Level of Assurance (Low / Substantial / High) per OIDC trust tiering, plus the OPDA-specific PDTF-Standard intermediate level per ODR-0009 §Q3. [Quale-in-Region; UFO Quale-in-Region]. Backed by AssuranceLevelScheme. Local term per S009 5-residue (PROV-O carries no notion of assurance grading). Concept tier →

Attributes

This entity is itself a Quale-in-Region — its instances are the four scheme members (Low / Substantial / High / PDTF-Standard). It declares no module-local datatype properties beyond those inherited from the scheme members (skos:notation, skos:prefLabel, etc.).

Relationships

This entity declares no module-local object properties. The binding from a Claim to its AssuranceLevel uses the inherited skos:related / overlay-profile-specific predicates rather than a core-tier predicate.

Identity key

Identity = scheme-member notation (one of Low, Substantial, High, PDTF-Standard). Each member is identified by its URI fragment within AssuranceLevelScheme.

Constraints

No SHACL Violation/Warning shapes emitted on AssuranceLevel itself at this tier. Vouch-only Evidence caps the AssuranceLevel at Low regardless of voucher quality (S009 Q3 hard rule; enforced at the overlay-profile level).

Derived attributes

None.

ER diagram

%%{init: {"theme": "base", "themeVariables": {"primaryColor": "#E1BEE7", "primaryTextColor": "#4A148C", "primaryBorderColor": "#6A1B9A", "lineColor": "#37474F"}}}%% erDiagram accTitle: AssuranceLevel — Entity-Relationship Diagram accDescr: AssuranceLevel Quale-in-Region — bound to Claim via assuranceLevel and member of AssuranceLevelScheme (eIDAS + PDTF-Standard). Claim }o--|| AssuranceLevel : "assuranceLevel" AssuranceLevel }o--|| AssuranceLevelScheme : "skos:inScheme"

Source ODR + ADR

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