Added reserved confidenceMethod property to the vocabulary.

Co-authored-by: Oliver Terbu <[email protected]>
Co-authored-by: Ted Thibodeau Jr <[email protected]>

vocab/credentials/v2/vocabulary.yml

@@ -29,6 +29,11 @@ class:
     label: Credential status
     comment: A Credential Status provides enough information to determine the current status of the credential (for example, suspended or revoked). This class serves as a supertype for specific status types.
 
+  - id: ConfidenceMethod
+    label: Confidence method
+    defined_by: https://w3c-ccg.github.io/confidence-method-spec/
+    status: reserved
+
   - id: JsonSchema
     label: JSON schema validator
     defined_by: https://www.w3.org/TR/vc-json-schema/#jsonschema
@@ -76,6 +81,12 @@ property:
     domain: cred:VerifiableCredential
     range: cred:CredentialStatus
 
+  - id: confidenceMethod
+    label: Confidence method
+    defined_by: https://w3c-ccg.github.io/confidence-method-spec/
+    status: reserved
+    range: cred:ConfidenceMethod
+
   - id: credentialSubject
     label: Credential subject
     defined_by: https://www.w3.org/TR/vc-data-model-2.0/#defn-credentialSubject