# Challenge 3

## Prepare

Pertama kita membutuhkan new wallet dari **metamask** dan siapkan **export private key**.

Lalu siapkan **Blockscout dan Alchemy API** untuk run challenge 4 ini dan kalian bisa klik link dibawah ini.

#### OP Sepolia API

{% embed url="<https://optimism-sepolia.blockscout.com/account/api-key>" %}

#### Base Sepolia API

{% embed url="<https://base-sepolia.blockscout.com/account/api-key>" %}

#### Alchemy Tutorial&#x20;

{% embed url="<https://docs.alchemy.com/docs/alchemy-quickstart-guide>" %}

Ikutin tutor alchemy yang step 1 dan tinggal ganti jaringannya ke Base Sepolia Testnet dan OP Sepolia Testnet.

### Installation

Lanjut setup VPS dan gunakan **Ubuntu 20.04** untuk run scriptnya.

<pre class="language-bash"><code class="lang-bash">sudo apt-get update
sudo apt-get upgrade -y
<strong>sudo apt install npm -y
</strong>sudo apt install git
</code></pre>

#### Install NodeJS

{% hint style="info" %}
Jika kalian mengalami error, tinggal run command dibawah satu persatu.
{% endhint %}

```bash
sudo apt install curl wget gnupg
curl -fsSL https://deb.nodesource.com/gpgkey/nodesource.gpg.key | sudo gpg --dearmor -o /usr/share/keyrings/nodesource.gpg
echo "deb [signed-by=/usr/share/keyrings/nodesource.gpg] https://deb.nodesource.com/node_18.x $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/nodesource.list
sudo apt update
sudo apt install nodejs
node --version
npm --version
```

#### Install Foundry

```bash
curl -L https://foundry.paradigm.xyz | bash
```

Lalu refresh resource

```bash
source /root/.bashrc
```

Kemudian jalankan foundry

```
foundryup 
```

#### Install Just

{% hint style="info" %}
Untuk menghindari error, run command ini satu persatu.
{% endhint %}

```bash
wget -qO - 'https://proget.makedeb.org/debian-feeds/prebuilt-mpr.pub' | gpg --dearmor | sudo tee /usr/share/keyrings/prebuilt-mpr-archive-keyring.gpg 1> /dev/null
echo "deb [arch=all,$(dpkg --print-architecture) signed-by=/usr/share/keyrings/prebuilt-mpr-archive-keyring.gpg] https://proget.makedeb.org prebuilt-mpr $(lsb_release -cs)" | sudo tee /etc/apt/sources.list.d/prebuilt-mpr.list
sudo apt update
sudo apt install just
```

#### Clone Repository (Thanks to Dexanode)

```bash
git clone https://github.com/Dexanode/ibc-app-solidity.git
```

Buka folder

```bash
cd ibc-app-solidity
```

Ubah nama file

```bash
cp .env.example .env
```

Edit isi dari .env

```bash
nano .env
```

Lalu isi bagian **PRIVATE\_KEY\_1** dengan **private key yang kalian dapatkan dari metamask** dan isi didalam ' '. Kemudian dibagian API\_KEY kalian isi sesuai yang kalian dapatkan pada step awal awal dan skip bagian **TENDERLY\_TOKEN**

<figure><img src="/files/2HW1UoAOwEjmjS37ZKQv" alt=""><figcaption></figcaption></figure>

Kemudian save filenya dengan tekan CTRL + X dan CTRL + Y, kemudian enter.

Lalu install templatenya dengan just

```bash
just install
```

### Run Script

Jalankan scriptnya dengan command dibawah ini.\\

```bash
just do-it
```

<figure><img src="/files/Girr6xTyOwcFJZfzKaAf" alt=""><figcaption></figcaption></figure>

Jika sudah muncul **"You've done it!"** maka sudah selesai challenge 3


---

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