> For the complete documentation index, see [llms.txt](https://docs.pharos.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pharos.xyz/developer-guide/hardhat/write-your-first-nft.md).

# Write Your First NFT

### Prerequisites

Before you begin, ensure you have the following:

* Git: Used for code management and obtain examples.
* Node.js: Install it from [nodejs.org](https://nodejs.org/).
* Pharos Devnet/Testnet Access: Access to a Pharos node (local or remote) for interacting with the blockchain.

### Setup 1: Install Hardhat

* [Hardhat](https://hardhat.org/hardhat-runner/docs/getting-started#installation)

### Setup 2: Set Up the Project

Clone the example repo:

```shell
git clone https://github.com/PharosNetwork/examples
cd examples/nft/hardhat/contract
```

Install OpenZeppelin Contracts:

```shell
npm install
```

### Setup 3: Write the NFT Contract

Create a New Solidity File:

* Create a new file for your NFT contract:

```shell
touch contracts/Token.sol
```

Write the Token Contract:

* Open `contracts/Token.sol` in your favorite text editor and add the following code:

```solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

contract Token is ERC721 {
    uint256 id;
    constructor() ERC721("Token", "MTK") {}

    function mint(address to) public returns (uint256) {
        id += 1;
        _mint(to, id);
        return id;
    }
}
```

Compile the Smart Contract:

```shell
npx hardhat compile
```

Test the Smart Contract

```shell
npx hardhat test
```

### Step 4: Deploy the Token Contract

Set the private key:

```shell
npx hardhat vars set PRIVATE_KEY
```

Deploy the Contract:

```shell
npx hardhat ignition deploy ./ignition/modules/Token.js --network pharos
```

### Step 5: Verify the Token Contract

Add the following content to your `hardhat.config.js` file

* For Atlantic Testnet

| Field         | Value                                                                                  |
| ------------- | -------------------------------------------------------------------------------------- |
| chain\_name   | pharos                                                                                 |
| chain\_id     | 688689                                                                                 |
| rpc\_endpoint | <https://atlantic.dplabs-internal.com>"                                                |
| api\_host     | <https://api.socialscan.io/pharos-atlantic-testnet/v1/explorer/command\\_api/contract> |
| explorer\_url | <https://atlantic.pharosscan.xyz/>                                                     |

```js
require("@nomicfoundation/hardhat-toolbox");

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  solidity: "0.8.28",
  networks: {
    pharos: {
      url: "https://atlantic.dplabs-internal.com",
      accounts: [vars.get("PRIVATE_KEY")],
    },
  },
  etherscan: {
    customChains: [
      {
        network: "pharos",
        chainId: 688689,
        urls: {
          apiURL: "https://api.socialscan.io/pharos-atlantic-testnet/v1/explorer/command_api/contract",
          browserURL: "https://atlantic.pharosscan.xyz/",
        },
      },
    ],
    apiKey: {
      pharos: "Put a random string", // Note we don't need a apiKey here, just leave a random string
    },
  }
};
```

* For Testnet

| Field         | Value                                                                         |
| ------------- | ----------------------------------------------------------------------------- |
| chain\_name   | pharos                                                                        |
| chain\_id     | 688688                                                                        |
| rpc\_endpoint | <https://testnet.dplabs-internal.com>                                         |
| api\_host     | <https://api.socialscan.io/pharos-testnet/v1/explorer/command\\_api/contract> |
| explorer\_url | <https://testnet.pharosscan.xyz/>                                             |

```js
require("@nomicfoundation/hardhat-toolbox");

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  solidity: "0.8.28",
  networks: {
    pharos: {
      url: "https://testnet.dplabs-internal.com",
      accounts: [vars.get("PRIVATE_KEY")],
    },
  },
  etherscan: {
    customChains: [
      {
        network: "pharos",
        chainId: 688688, // Or use Pharos Atlantic Testnet chain id 688689
        urls: {
          apiURL: "https://api.socialscan.io/pharos-testnet/v1/explorer/command_api/contract",
          browserURL: "https://testnet.pharosscan.xyz/",
        },
      },
    ],
    apiKey: {
      pharos: "Put a random string", // Note we don't need a apiKey here, just leave a random string
    },
  }
};
```

Run the hardhat verify command

```shell
npx hardhat verify --network pharos <contract_address> <constructor_args_params>
```

### Troubleshooting

* **Contract Deployment Fails**: Ensure you have enough testnet tokens to cover the deployment cost.
* **Interaction Issues**: Verify that the contract address and ABI are correct.
* **Insufficient Balance**: Ensure your wallet has enough tokens to transfer.

### Conclusion

Now that you’ve created and deployed your first NFT using Hardhat.

This guide provides a comprehensive introduction to to creating and deploying an NFT on the Pharos blockchain. If you encounter any issues, refer to the Troubleshooting section or consult the Hardhat documentation. Happy building! 🚀


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