diff --git a/proofstream_parity_test.go b/proofstream_parity_test.go
index 9b4f81a..630670a 100644
--- a/proofstream_parity_test.go
+++ b/proofstream_parity_test.go
@@ -72,6 +72,43 @@ func TestParityRejectPaths(t *testing.T) {
 	}
 }
 
+type receiptParityVectors struct {
+	Cases []struct {
+		ID            string        `json:"id"`
+		PublicKeyHex  string        `json:"public_key_hex"`
+		Receipt       SignedReceipt `json:"receipt"`
+		ExpectOK      bool          `json:"expect_ok"`
+		ExpectProblem []string      `json:"expect_problems"`
+	} `json:"cases"`
+}
+
+func TestParityReceiptVerification(t *testing.T) {
+	path := filepath.Join("..", "..", "golden-vectors", "sdk-parity", "receipts.json")
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		t.Fatalf("read receipt vectors: %v", err)
+	}
+	var v receiptParityVectors
+	if err := json.Unmarshal(raw, &v); err != nil {
+		t.Fatalf("decode receipt vectors: %v", err)
+	}
+	for _, c := range v.Cases {
+		report := VerifyReceiptOffline(c.Receipt, c.PublicKeyHex)
+		if report.OK != c.ExpectOK {
+			t.Errorf("%s: ok=%v want %v (problems=%v)", c.ID, report.OK, c.ExpectOK, report.Problems)
+		}
+		if len(report.Problems) != len(c.ExpectProblem) {
+			t.Errorf("%s: problems=%v want %v", c.ID, report.Problems, c.ExpectProblem)
+			continue
+		}
+		for i, p := range c.ExpectProblem {
+			if report.Problems[i] != p {
+				t.Errorf("%s: problem[%d]=%q want %q", c.ID, i, report.Problems[i], p)
+			}
+		}
+	}
+}
+
 func TestParityVerifyPayloadCommitment(t *testing.T) {
 	for _, c := range loadParityVectors(t).Accept {
 		commitment, err := PayloadCommitment(c.Payload)