# Build on Testnet

Developing Applications dApps on HeLa Chain 

If you have developed dApps on Ethereum or `any EVM compatible chain` before, you will feel at home. It is exactly the same. But if you are new, don’t worry, this document will help you embark on your first dApp development on HeLa chain.

1. **Metamask Wallet Setup**\
   If you are using Chrome Browser, Metamask extension can easily be installed from the Chrome Extension. Once it is installed it will show up at the top panel of your browser. Once it is installed, it will show up at the top panel of your browser. 
2. **Network Setup** 

   Open your Metamask > Network > Add a Network > Add a Network Manually and enter the following: 

<table><thead><tr><th>Setting</th><th>Testnet</th><th data-hidden></th></tr></thead><tbody><tr><td>Network name </td><td>HeLa Testnet</td><td></td></tr><tr><td>RPC</td><td>https://testnet-rpc.helachain.com</td><td></td></tr><tr><td>Chain ID</td><td>666888</td><td></td></tr><tr><td>SYMBOL</td><td>HLUSD</td><td></td></tr><tr><td>Block Explorer</td><td><a href="https://testnet-blockexplorer.helachain.com/">https://testnet-blockexplorer.helachain.com</a></td><td></td></tr></tbody></table>

3. **Funding Your Wallet**&#x20;

   To fund your wallet with transaction gas fee, go to HeLa Testnet Faucet. You will receive 10 HLUSD every 24 hours. Claim HLUSD Testnet Faucet: <https://testnet-faucet.helachain.com>
4. **First dApp**&#x20;

   There are many platforms and utilities that you can use to develop dApp. Examples include: REMIX, Truffle, HardHat, Foundry etc. Visit [http://remix.ethereum.org](http://remix.ethereum.org/) for more information. \
   Currently, we only support 0.8.9 solidity version.&#x20;

<figure><img src="https://105378026-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FjMEkjypW9VmSM7QWnBno%2Fuploads%2F7pymurncGqsWDvV2NUSp%2FScreenshot%202024-10-28%20at%201.14.06%E2%80%AFPM.png?alt=media&#x26;token=4fce2440-4c87-48af-a31d-a833114b4332" alt=""><figcaption><p>Our first program is <code>HelloWorld.sol</code></p></figcaption></figure>

<figure><img src="https://105378026-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FjMEkjypW9VmSM7QWnBno%2Fuploads%2FxiV8covsDAjxEOT56dov%2FScreenshot%202024-10-28%20at%201.14.15%E2%80%AFPM.png?alt=media&#x26;token=667190e1-17ae-4824-aff1-6b6aae8bd951" alt=""><figcaption><p>In Remix IDE, you will need to compile with a compatible compiler. Remember to select <code>Injected provider- MetaMask</code> in the deployment tab.</p></figcaption></figure>

5. **HeLa Scan**

Transaction and smart contracts can be observed and verfied in Testnet Block Explorer.&#x20;

[https://testnet-blockexplorer.helachain.com/<br>](https://testnet-blockexplorer.helachain.com/)