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# Faucet

It is highly recommended to test your contract on the [testnet](https://test.whatsonchain.com/) after passing local tests. It ensures that a contract can be successfully deployed and invoked as expected on the blockchain.

Before deploy and call a contract, you need to have a funded address:

1. Generate a private key with the following command, after creating a project:

```sh
scrypt project demo
cd demo
npm install
npm run genprivkey
```

The command will generate a private key and store it in a `.env` file in our project's root directory. It also outputs the [Bitcoin address](https://wiki.bitcoinsv.io/index.php/Bitcoin_address) corresponding to our private key.

2. Fund the private key's address with some testnet coins. You could use this [faucet](https://scrypt.io/faucet) to receive test coins.

![faucet](../../static/img/faucet.gif)

### Use the Sensilet Wallet

Alternatively, if you have already installed [Sensilet](https://sensilet.com/), you can extract and use its private key on testnet as follows.

![](../../static/img/extract-sensilet-private-key.gif)