# Making transactions

1. **Initiating Smart Contract**:

   ```javascript
   const apiKey = process.env.API_KEY;
   const chainEx = new ChainEx(apiKey);
   const smartAccount = await chainEx.initialize(provider, configParams); 
   const contractAddress = "<contract_address>";
   const abi = ERC721_ABI;
   const erc721Contract = new ethers.Contract(contractAddress, abi);
   ```

   Identify the address and ABI of your ERC-721 contract for SDK-enabled interactions.
2. **Constructing a Transaction**:

   ```javascript
   const transaction = {
       target: contractAddress,
       data: erc721Contract.interface.encodeFunctionData("safeMint", [param1, param2]) `
   };
   ```

   Create a transaction blueprint for invoking the `safeMint` function on your ERC-721 contract via ChainEx.
3. **Transaction Execution**:

   ```javascript
   const operationHash = await chainEx.executeTransaction(transaction);
   console.log("Operation Hash:", operationHash);
   ```

   Execute the transaction with ChainEx and receive the operation hash.


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