diff --git a/common/changes/@contentauth/toolkit/CAI-3467_2023-03-09-22-59.json b/common/changes/@contentauth/toolkit/CAI-3467_2023-03-09-22-59.json
new file mode 100644
index 00000000..a0955485
--- /dev/null
+++ b/common/changes/@contentauth/toolkit/CAI-3467_2023-03-09-22-59.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@contentauth/toolkit",
+      "comment": "Added c2pa-asset-ref types to support asset reference assertions",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@contentauth/toolkit"
+}
\ No newline at end of file
diff --git a/packages/c2pa/index.ts b/packages/c2pa/index.ts
index 085be681..24542a36 100644
--- a/packages/c2pa/index.ts
+++ b/packages/c2pa/index.ts
@@ -7,6 +7,13 @@
  * it.
  */
 
+export {
+  Assertion,
+  C2paActionsAssertion,
+  C2paAssetRef,
+  C2paHashDataAssertion,
+  CreativeWorkAssertion,
+} from '@contentauth/toolkit';
 export { AssertionAccessor, ExtendedAssertions } from './src/assertions';
 export {
   C2pa,
@@ -41,10 +48,3 @@ export { selectProducer } from './src/selectors/selectProducer';
 export { selectSocialAccounts } from './src/selectors/selectSocialAccounts';
 export { C2paSourceType, Source, SourceMetadata } from './src/source';
 export { BlobUrlData, DisposableBlobUrl, Thumbnail } from './src/thumbnail';
-
-export {
-  Assertion,
-  C2paActionsAssertion,
-  C2paHashDataAssertion,
-  CreativeWorkAssertion,
-} from '@contentauth/toolkit';
diff --git a/packages/toolkit/types/index.ts b/packages/toolkit/types/index.ts
index 7c5a2e85..4e2566bb 100644
--- a/packages/toolkit/types/index.ts
+++ b/packages/toolkit/types/index.ts
@@ -111,11 +111,26 @@ export type CreativeWorkAssertion = Assertion<
     url?: string;
   }
 >;
+interface Reference {
+  uri: string;
+}
+
+interface Resource {
+  reference: Reference;
+}
+
+export declare type C2paAssetRef = Assertion<
+  'c2pa.asset-ref',
+  {
+    resources: Resource[];
+  }
+>;
 
 export type ManifestAssertion =
   | C2paActionsAssertion
   | C2paHashDataAssertion
-  | CreativeWorkAssertion;
+  | CreativeWorkAssertion
+  | C2paAssetRef;
 
 export interface Action {
   action: string;