diff --git a/app/controllers/api/v2/bitcoin_transactions_controller.rb b/app/controllers/api/v2/bitcoin_transactions_controller.rb
index cdec650fb..2b14ad10a 100644
--- a/app/controllers/api/v2/bitcoin_transactions_controller.rb
+++ b/app/controllers/api/v2/bitcoin_transactions_controller.rb
@@ -8,12 +8,14 @@ def query
         not_cached = cache_keys - res.keys
         to_cache = {}
 
-        get_raw_transactions(not_cached).each do |tx|
-          next if tx.dig("error").present?
+        if not_cached.present?
+          get_raw_transactions(not_cached).each do |tx|
+            next if tx.dig("error").present?
 
-          txid = tx.dig("result", "txid")
-          res[txid] = tx
-          to_cache[txid] = tx
+            txid = tx.dig("result", "txid")
+            res[txid] = tx
+            to_cache[txid] = tx
+          end
         end
 
         Rails.cache.write_multi(to_cache, expires_in: 10.minutes) unless to_cache.empty?
diff --git a/app/controllers/api/v2/ckb_transactions_controller.rb b/app/controllers/api/v2/ckb_transactions_controller.rb
index 7c9a3429d..0d5145a1c 100644
--- a/app/controllers/api/v2/ckb_transactions_controller.rb
+++ b/app/controllers/api/v2/ckb_transactions_controller.rb
@@ -64,7 +64,7 @@ def rgb_digest
         end
 
         op_return = @ckb_transaction.bitcoin_vouts.find_by(op_return: true)
-        bitcoin_transaction = BitcoinTransaction.includes(:bitcoin_vouts).find_by(bitcoin_vouts: { ckb_transaction_id: tx.id })
+        bitcoin_transaction = BitcoinTransaction.includes(:bitcoin_vouts).find_by(bitcoin_vouts: { ckb_transaction_id: @ckb_transaction.id })
 
         render json: {
           data: {