# MintTransfer method

The `mintTransfer()` is a `payable` method that allows users to buy newly minted TPAs. To use this method, you need to send `plaquePrice * _names.length` amount of `value` in Wei to this transaction as TPAs price.

```solidity
function mintTransfer(bytes32[] _names, uint32[] _amounts, string _outputData) external payable
```

#### Input & Output

* `_names`: an array of `bytes32` representing the TPA names to be minted.
* `_amounts`: an array of `uint32` representing the amount of TPAs to be minted. The length of this array should be the same as the length of the `_names` array, and all elements should be set to 1.
* `_outputData`: a string representing the output data to be sent to us. It should be a JSON-encoded object with either a "username" or a "name" property. Recording the username or TPA name in the output data and pinging someone is optional. However, it's worth noting that to ping a TPA, the TPA owner must have registered their username on the platform. Additionally, you cannot use both the "username" and "name" properties simultaneously.
* This function doesn't return anything, only a transaction hash to follow your transaction with.

#### Usage

 To use this method, you can create a new instance of the StageMeta smart-contract and call the `mintTransfer()` method, like this:

<pre class="language-typescript"><code class="lang-typescript">const options = {
  value: ethers.utils.parseEther("0.06498719370006499"), // TPAs price
  gasLimit: 500000,
};

const mintTransferResult = await stageMetaContract.mintTransfer(
  [
    ethers.utils.formatBytes32String("aaa-888"),
<strong>    ethers.utils.formatBytes32String("aaa-999")
</strong>  ],
  [1, 1],
  JSON.stringify({
    name: 'aaa-000', //or username: 'stagemeta'
  }),
  options
);
console.log("mintTransferResult:", mintTransferResult);
</code></pre>