diff --git a/components/Challenge.yml b/components/Challenge.yml
index 0b800a7..6393dcf 100644
--- a/components/Challenge.yml
+++ b/components/Challenge.yml
@@ -28,7 +28,7 @@ components:
         verified:
           type: string
           description: Whether verification of the challenge was successful
-        firstVerified:
+        firstVerifiedAt:
           type: string
           description: dateTimeStamp when the challenge was first verified.
         uses:
diff --git a/holder.yml b/holder.yml
index 9cbc6ee..46e8f77 100644
--- a/holder.yml
+++ b/holder.yml
@@ -268,7 +268,7 @@ paths:
           content:
             application/json:
               schema:
-                  $ref: "#/components/schemas/ProvePresentationResponse"
+                $ref: "#/components/schemas/ProvePresentationResponse"
         "400":
           description: invalid input!
         "500":
diff --git a/index.html b/index.html
index dc0466f..9acef6c 100644
--- a/index.html
+++ b/index.html
@@ -729,7 +729,7 @@ <h4>Create Challenge</h4>
         <div class="api-detail"
           data-api-endpoint="post /challenges"></div>
         <p>
-The instance should create a challenge for use during verification and it should keep track of the number of times a challenge has been passed to verification endpoints as `options.challenge`.
+The instance should create a challenge for use during verification, and track the number of times the challenge has been passed to verification endpoints as `options.challenge`.
         </p>
       </section>
 
diff --git a/verifier.yml b/verifier.yml
index fcf3551..24f8289 100644
--- a/verifier.yml
+++ b/verifier.yml
@@ -62,11 +62,11 @@ paths:
         description: Parameters for verifying a verifiablePresentation.
       responses:
         "200":
-            description: Verifiable Presentation successfully verified!
-            content:
-              application/json:
-                schema:
-                  $ref: "#/components/schemas/VerifyPresentationResponse"
+          description: Verifiable Presentation successfully verified!
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/VerifyPresentationResponse"
 
         "400":
           description: Invalid or malformed input