diff --git a/src/currency_core/currency_format_utils.h b/src/currency_core/currency_format_utils.h
index cef2f29a..fa269eaa 100644
--- a/src/currency_core/currency_format_utils.h
+++ b/src/currency_core/currency_format_utils.h
@@ -368,7 +368,7 @@ namespace currency
   bool parse_and_validate_block_from_blob(const blobdata& b_blob, block& b);
   uint64_t get_inputs_money_amount(const transaction& tx);
   bool get_inputs_money_amount(const transaction& tx, uint64_t& money);
-  uint64_t get_outs_money_amount(const transaction& tx);
+  uint64_t get_outs_money_amount(const transaction& tx, const currency::account_keys& acc_keys_for_hidden_amounts = currency::null_acc_keys);
   bool check_inputs_types_supported(const transaction& tx);
   bool check_outs_valid(const transaction& tx);
   bool parse_amount(uint64_t& amount, const std::string& str_amount);
diff --git a/src/currency_core/currency_format_utils_transactions.h b/src/currency_core/currency_format_utils_transactions.h
index e4f16d1f..6190f19c 100644
--- a/src/currency_core/currency_format_utils_transactions.h
+++ b/src/currency_core/currency_format_utils_transactions.h
@@ -62,6 +62,7 @@ namespace currency
     bool is_multisig() const    { return ms_sigs_count > 0; }
     bool is_zc() const          { return !real_out_amount_blinding_mask.is_zero(); }
     bool is_native_coin() const { return asset_id == currency::native_coin_asset_id; }
+    uint64_t amount_for_global_output_index() const { return is_zc() ? 0 : amount; } // amount value for global outputs index, it's zero for outputs with hidden amounts
 
     BEGIN_SERIALIZE_OBJECT()
       FIELD(outputs)