diff --git a/contracts/CPKFactory.sol b/contracts/CPKFactory.sol
index b6cfc143..a566b6d6 100644
--- a/contracts/CPKFactory.sol
+++ b/contracts/CPKFactory.sol
@@ -11,6 +11,14 @@ contract CPKFactory {
         return type(Proxy).creationCode;
     }
 
+    function proxyRuntimeCode() external pure returns (bytes memory) {
+        return type(Proxy).runtimeCode;
+    }
+
+    function proxyRuntimeCodeHash() external pure returns (bytes32 digest) {
+        return keccak256(type(Proxy).runtimeCode);
+    }
+
     function createProxyAndExecTransaction(
         address masterCopy,
         uint256 saltNonce,
diff --git a/test/ethers/shouldWorkWithEthers.ts b/test/ethers/shouldWorkWithEthers.ts
index c6a054cb..3bd4c222 100644
--- a/test/ethers/shouldWorkWithEthers.ts
+++ b/test/ethers/shouldWorkWithEthers.ts
@@ -65,6 +65,8 @@ export function shouldWorkWithEthers({
         signer.provider.getTransactionCount(address)
       ),
       getBalance: (address: Address): Promise<number> => signer.provider.getBalance(address),
+      getCode: (address: Address): Promise<string> => signer.provider.getCode(address),
+      keccak256: (hex: string): string => ethers.utils.keccak256(hex),
       testedTxObjProps: 'the TransactionResponse and the hash',
       checkTxObj:
         ({ transactionResponse, hash }: { transactionResponse: any; hash: string }): void => {
diff --git a/test/transactions/shouldSupportDifferentTransactions.ts b/test/transactions/shouldSupportDifferentTransactions.ts
index 12068e5d..436ae6a5 100644
--- a/test/transactions/shouldSupportDifferentTransactions.ts
+++ b/test/transactions/shouldSupportDifferentTransactions.ts
@@ -12,6 +12,8 @@ interface ShouldSupportDifferentTransactionsProps {
   fromWei: any;
   getTransactionCount: any;
   getBalance: any;
+  getCode: any;
+  keccak256: any;
   testedTxObjProps: any;
   checkTxObj: any;
   waitTxReceipt: any;
@@ -28,6 +30,8 @@ export function shouldSupportDifferentTransactions({
   fromWei,
   getTransactionCount,
   getBalance,
+  getCode,
+  keccak256,
   testedTxObjProps,
   checkTxObj,
   waitTxReceipt,
@@ -290,5 +294,23 @@ export function shouldSupportDifferentTransactions({
 
       gasCosts.should.be.equal(gasPrice * gasUsed);
     });
+
+    if (!ownerIsRecognizedContract) {
+      it('deploys proxy which matches factory specs', async () => {
+        const cpkFactory = await getContracts().CPKFactory.deployed();
+        const idPrecompile = `0x${'0'.repeat(39)}4`;
+        await cpk.execTransactions([{
+          operation: CPK.Call,
+          to: idPrecompile,
+          value: 0,
+          data: '0x',
+        }]);
+        const proxyRuntimeCode = await getCode(cpk.address);
+        await cpkFactory.proxyRuntimeCode()
+          .should.eventually.equal(proxyRuntimeCode);
+        await cpkFactory.proxyRuntimeCodeHash()
+          .should.eventually.equal(keccak256(proxyRuntimeCode));
+      });
+    }
   });
 }
diff --git a/test/web3/shouldWorkWithWeb3.ts b/test/web3/shouldWorkWithWeb3.ts
index fcb28def..61dc9938 100644
--- a/test/web3/shouldWorkWithWeb3.ts
+++ b/test/web3/shouldWorkWithWeb3.ts
@@ -43,6 +43,8 @@ export function shouldWorkWithWeb3({
       testedTxObjProps: 'the PromiEvent for the transaction and the hash',
       getBalance: (address: Address): number => web3Box[0].eth.getBalance(address)
         .then((balance: number) => web3Box[0].utils.toBN(balance)),
+      getCode: (address: Address): Promise<string> => web3Box[0].eth.getCode(address),
+      keccak256: (hex: string): string => web3Box[0].utils.keccak256(hex),
       checkTxObj: ({ promiEvent, hash }: { promiEvent: any; hash: string }): void => {
         should.exist(promiEvent);
         should.exist(hash);