Entity Identity
Evaluation methods for determining whether two identifiers refer to the same real-world entity.
Fide-OwlSameAs-Person-v1
Determine whether two identifiers refer to the same Person entity across different systems or contexts.
Are https://twitter.com/alice and https://github.com/alice the same person? This method evaluates owl:sameAs claims between Person Fide IDs to establish identity mappings.
Fide-OwlSameAs-Person-v1:Subject
The statement claim being evaluated. Raw identifiers must be full IRIs for all statement parts.
The Object is always the primary identifier you want to resolve to; the Subject is the alternate identifier requiring alignment.
| Statement Part | Raw Identifier | Fide ID |
|---|---|---|
| Subject | https://twitter.com/alice | did:fide:0x15 |
| Predicate | http://www.w3.org/2002/07/owl#sameAs | did:fide:0x65 |
| Object | https://github.com/alice | did:fide:0x15 |
Evaluation
The evaluation statement structure.
| Statement Part | Raw Identifier | Fide ID |
|---|---|---|
| Subject | Statement: Fide-OwlSameAs-Person-v1:Subject | did:fide:0x60 |
| Predicate | Fide-OwlSameAs-Person-v1 EvaluationMethod (e.g., GitHub spec link) | did:fide:0xe5 |
| Object | Verdict: -1, 0, or 1 | did:fide:0x66 |
Evaluation Criteria
| Verdict | Meaning | Criteria |
|---|---|---|
1 | Same Person | Strong evidence the identifiers refer to the same individual. Verified through cryptographic proof, authoritative cross-references, or explicit declarations. |
0 | Uncertain | Some evidence suggests they may be the same person, but confidence is low. Context is ambiguous or evidence is circumstantial. |
-1 | Different People | Clear evidence the identifiers refer to different individuals, or fundamental incompatibility in identity attributes. |
Fide-OwlSameAs-Organization-v1
Determine whether two identifiers refer to the same Organization entity across different systems or contexts.
Are https://www.acme-corp.com and https://www.crunchbase.com/organization/acme-corporation the same organization? This method evaluates owl:sameAs claims between Organization Fide IDs to establish entity resolution.
Fide-OwlSameAs-Organization-v1:Subject
The statement claim being evaluated. Raw identifiers must be full IRIs for all statement parts.
The Object is always the primary identifier you want to resolve to; the Subject is the alternate identifier requiring alignment.
| Statement Part | Raw Identifier | Fide ID |
|---|---|---|
| Subject | https://www.crunchbase.com/organization/acme-corporation | did:fide:0x25 |
| Predicate | http://www.w3.org/2002/07/owl#sameAs | did:fide:0x65 |
| Object | https://www.acme-corp.com | did:fide:0x25 |
Evaluation
The evaluation statement structure.
| Statement Part | Raw Identifier | Fide ID |
|---|---|---|
| Subject | Statement: Fide-OwlSameAs-Organization-v1:Subject | did:fide:0x60 |
| Predicate | Fide-OwlSameAs-Organization-v1 EvaluationMethod (e.g., GitHub spec link) | did:fide:0xe5 |
| Object | Verdict: -1, 0, or 1 | did:fide:0x66 |
Evaluation Criteria
| Verdict | Meaning | Criteria |
|---|---|---|
1 | Same Organization | Strong evidence the identifiers refer to the same entity. Verified through authoritative registries (EIN, domain ownership), official declarations, or consistent attributes. |
0 | Uncertain | Some evidence suggests they may be the same organization, but confidence is low. Names are similar but not exact, or context is ambiguous. |
-1 | Different Organizations | Clear evidence the identifiers refer to different entities, or fundamental incompatibility in organizational attributes. |