add external libraries to smart contract verifier

apps/explorer/lib/explorer/smart_contract/verifier.ex

@@ -15,6 +15,18 @@ defmodule Explorer.SmartContract.Verifier do
   def evaluate_authenticity(_, %{"contract_source_code" => ""}),
     do: {:error, :contract_source_code}
 
+  def evaluate_authenticity(address_hash, %{
+        "name" => name,
+        "contract_source_code" => contract_source_code,
+        "optimization" => optimization,
+        "compiler_version" => compiler_version,
+        "external_libraries" => external_libraries
+      }) do
+    solc_output = CodeCompiler.run(name, compiler_version, contract_source_code, optimization, external_libraries)
+
+    compare_bytecodes(solc_output, address_hash)
+  end
+
   def evaluate_authenticity(address_hash, %{
         "name" => name,
         "contract_source_code" => contract_source_code,

apps/explorer/test/explorer/smart_contract/verifier_test.exs

@@ -28,6 +28,34 @@ defmodule Explorer.SmartContract.VerifierTest do
       assert abi != nil
     end
 
+    test "verifies the generated bytecode with external libraries" do
+      contract_data =
+        "#{System.cwd!()}/test/support/fixture/smart_contract/compiler_tests.json"
+        |> File.read!()
+        |> Jason.decode!()
+        |> List.first()
+
+      compiler_version = contract_data["compiler_version"]
+      external_libraries = contract_data["external_libraries"]
+      name = contract_data["name"]
+      optimize = contract_data["optimize"]
+      contract = contract_data["contract"]
+      expected_bytecode = contract_data["expected_bytecode"]
+
+      contract_address = insert(:contract_address, contract_code: "0x" <> expected_bytecode)
+
+      params = %{
+        "contract_source_code" => contract,
+        "compiler_version" => compiler_version,
+        "name" => name,
+        "optimization" => optimize,
+        "external_libraries" => external_libraries
+      }
+
+      assert {:ok, %{abi: abi}} = Verifier.evaluate_authenticity(contract_address.hash, params)
+      assert abi != nil
+    end
+
     test "returns error when bytecode doesn't match", %{contract_code_info: contract_code_info} do
       contract_address = insert(:contract_address, contract_code: contract_code_info.bytecode)