return not found for not verified read contract address

apps/block_scout_web/lib/block_scout_web/controllers/address_read_contract_controller.ex

@@ -27,6 +27,7 @@ defmodule BlockScoutWeb.AddressReadContractController do
 
     with {:ok, address_hash} <- Chain.string_to_address_hash(address_hash_string),
          {:ok, address} <- Chain.find_contract_address(address_hash, address_options, true) do
+      if address.smart_contract do
         {transaction_count, validation_count} = transaction_and_validation_count(address_hash)
 
         render(
@@ -38,6 +39,9 @@ defmodule BlockScoutWeb.AddressReadContractController do
           transaction_count: transaction_count,
           validation_count: validation_count
         )
+      else
+        not_found(conn)
+      end
     else
       :error ->
         not_found(conn)

apps/block_scout_web/test/block_scout_web/controllers/address_read_contract_controller_test.exs

@@ -39,5 +39,22 @@ defmodule BlockScoutWeb.AddressReadContractControllerTest do
       assert %Token{} = conn.assigns.exchange_rate
       assert conn.assigns.transaction_count
     end
+
+    test "returns not found for an unverified contract", %{conn: conn} do
+      contract_address = insert(:contract_address)
+
+      transaction = insert(:transaction, from_address: contract_address)
+
+      insert(
+        :internal_transaction_create,
+        index: 0,
+        transaction: transaction,
+        created_contract_address: contract_address
+      )
+
+      conn = get(conn, address_read_contract_path(BlockScoutWeb.Endpoint, :index, contract_address.hash))
+
+      assert html_response(conn, 404)
+    end
   end
 end