Concept tier claim

Evidence

https://opda.org.uk/pdtf/Evidence

Evidence supporting a Claim. UFO RoleMixin (anti-rigid, cross-categorial — a bearer is evidence only qua a VerificationActivity using it; ODR-0006 Seller/Buyer pattern); PROV-O Entity. Evidence KIND is a coded isMemberOf classification — opda:evidenceType over opda:EvidenceMethodScheme (the OIDC4IDA evidence.type value-space: Document / Electronic-Record / Vouch) — NOT a subclass tree (ODR-0027 §R6; the former …Evidence subclasses are retired, since 'evidence is a role a document plays' and a Role is never rdfs:subClassOf a Kind). The three kinds are NOT collapsed (S009 R5): they remain distinct scheme concepts. Kind-specific attributes (opda:attestedBy for vouches; document/record specifics) are facets borne by the role; per-kind obligations are validated VALUE-KEYED by opda:EvidenceFacetShape (sh:targetSubjectsOf opda:evidenceType + sh:or material implication; ADR-0012).

Classification

PROV-O: Entity (W3C PROV-O REC §3.2). The three evidence kinds (Document / Electronic-Record / Vouch) are OIDC4IDA / eIDAS evidence.type concepts in opda:EvidenceMethodScheme (S009 Rule 5), carried as the coded opda:evidenceType value (ODR-0027 §R6).

Relationships

Predicate	Target	Cardinality	Inverse	Description
`attestedBy`	`Agent`	0..*	—	Vouch → Agent attestation join. A facet borne by evidence playing the vouch role (opda:evidenceType 'Vouch'); mirror of prov:wasAttributedTo for vouch-specific use. The voucher's role (e.g. opda:VoucherRole) is captured via prov:qualifiedAttribution → prov:Attribution → prov:hadRole per S009 Q2 qualified-form discipline. Presence is required value-keyed when evidenceType='Vouch' (opda:EvidenceFacetShape, ADR-0012).
`evidenceType`	`Concept`	0..*	—	The OIDC4IDA acquisition kind of a piece of evidence — the opda:EvidenceMethodScheme member notation (Document / Electronic-Record / Vouch). The governed isMemberOf classifier (ODR-0027 §R6) that states the evidence kind WITHOUT a subclass tree (a Role is never rdfs:subClassOf a Kind); it replaced the retired short-name aliases and the retired …Evidence subclasses. Validated by opda:EvidenceTypeValueShape (sh:in the scheme, via sh:targetSubjectsOf — the opda:ownerType value-space idiom). rdfs:domain/range are documentary (ODR-0026 §R2); the real constraint is SHACL.

Constraints

EvidenceIdentityKeyShape sh:Violation

Evidence digest MUST be a single xsd:string value when present. Provides content-addressable provenance per ODR-0009 §Q1.

Sources

harness/odr/ODR-0009/section-Q1