diff --git a/src/opCodeFinder.js b/src/opCodeFinder.js
index b9bb8c2..b8385c5 100644
--- a/src/opCodeFinder.js
+++ b/src/opCodeFinder.js
@@ -72,12 +72,18 @@ async function findContracts(startBlockNumber, endBlockNumber) {
     );
     let block = await web3.eth.getBlock(i);
     if (block != null) {
-      if (block.transactions != null && block.transactions.length != 0) {
+      if (block.transactions != null) {
         let blockFinishedCount = block.transactions.length;
-        //srarch for contract address in each transaction
+        //search for type of "CREATE" in each transaction
         for (let txHash of block.transactions) {
-          let receipt = await web3.eth.getTransactionReceipt(txHash);
-          if (receipt && receipt.contractAddress) {
+          let traceObject = await web3.eth.currentProvider.sendAsync({
+            method: "debug_traceTransaction",
+            params: [`${txHash}`, { tracer: "callTracer" }],
+            jsonrpc: "2.0",
+            id: "1",
+          });
+          if (traceObject.result.type === "CREATE") {
+            let receipt = await web3.eth.getTransactionReceipt(txHash);
             getContractBytecode(receipt.contractAddress);
             contractCount++;
           }