oceanprotocol/docs

---
description: Remote setup for running & testing ocean.py
---

# Remote Setup

This setup does not use barge and uses a remote chain to do the transactions. When the network URL is specified & configured, ocean.py will use components (such as Provider, Aquarius, C2D) according to the expected blockchain.

Here, we do setup for Sepolia. It's similar for other remote chains.

Here, we will:

1. Configure Networks
2. Create two accounts - `REMOTE_TEST_PRIVATE_KEY1` and `2`
3. Get test ETH on Sepolia
4. Get test OCEAN on Sepolia
5. Set envvars
6. Set up Alice and Bob wallets in Python

Let's go!

### 1. Configure Networks

#### 1.1 Supported networks

All [Ocean chain deployments](https://docs.oceanprotocol.com/discover/networks) (Eth mainnet, Polygon, etc) are supported.
For any supported network, use the RPC URL of your choice when passing it to the ocean config object.

#### 1.2 RPCs and Infura

In order to obtain API keys for blockchain access, follow up [this document](http://127.0.0.1:5000/o/mTcjMqA4ylf55anucjH8/s/zQlpIJEeu8x5yl0OLuXn/) for tips & tricks.

**If you do have an Infura account**

Use the full RPC URL including the base and API key, e.g. for sepolia: `https://sepolia.infura.io/v3/<API-KEY>`

### 2. Create EVM Accounts (One-Time)

An EVM account is singularly defined by its private key. Its address is a function of that key. Let's generate two accounts!

In a new or existing console, run Python.

```bash
python
```

In the Python console:

```python
from eth_account.account import Account
account1 = Account.create()
account2 = Account.create()

print(f"""
REMOTE_TEST_PRIVATE_KEY1={account1.key.hex()}, ADDRESS1={account1.address}
REMOTE_TEST_PRIVATE_KEY2={account2.key.hex()}, ADDRESS2={account2.address}
""")
```

Then, hit Ctrl-C to exit the Python console.

Now, you have two EVM accounts (address & private key). Save them somewhere safe, like a local file or a password manager.

These accounts will work on any EVM-based chain: production chains like Eth mainnet and Polygon, and testnets like Sepolia. Here, we'll use them for Sepolia.

### 3. Get (test) ETH on Sepolia

We need the a network's native token to pay for transactions on the network. [ETH](https://ethereum.org/en/get-eth/) is the native token for Ethereum mainnet; [MATIC](https://polygon.technology/matic-token/) is the native token for Polygon, and [(test) ETH](https://www.alchemy.com/faucets/ethereum-sepolia) is the native token for Sepolia.

To get free (test) ETH on Sepolia:

1. Go to the faucet [https://www.alchemy.com/faucets/ethereum-sepolia](https://www.alchemy.com/faucets/ethereum-sepolia). Login or create an account on Alchemy.
2. Request funds for ADDRESS1
3. Request funds for ADDRESS2


### 4. Get (test) OCEAN on Sepolia

[OCEAN](https://oceanprotocol.com/token) can be used as a data payment token, and locked into veOCEAN for Data Farming / curation. The READMEs show how to use OCEAN in both cases.

* (Test) OCEAN is on each testnet. Test OCEAN on Sepolia is at [`0x1B083D8584dd3e6Ff37d04a6e7e82b5F622f3985`](https://sepolia.etherscan.io/address/0x1B083D8584dd3e6Ff37d04a6e7e82b5F622f3985).

To get free (test) OCEAN on Sepolia:

1. Go to the faucet [https://faucet.sepolia.oceanprotocol.com/](https://faucet.sepolia.oceanprotocol.com/)
2. Request funds for ADDRESS1
3. Request funds for ADDRESS2

You can confirm receiving funds by going to the following url, and seeing your reported OCEAN balance: `https://sepolia.etherscan.io/address/0x1B083D8584dd3e6Ff37d04a6e7e82b5F622f3985?a=<ADDRESS1 or ADDRESS2>`

### 5. Set envvars

As usual, Linux/MacOS needs "`export`" and Windows needs "`set`". In the console:

**Linux & MacOS users:**

```bash
# For accounts: set private keys
export REMOTE_TEST_PRIVATE_KEY1=<your REMOTE_TEST_PRIVATE_KEY1>
export REMOTE_TEST_PRIVATE_KEY2=<your REMOTE_TEST_PRIVATE_KEY2>
```

**Windows users:**

```powershell
# For accounts: set private keys
set REMOTE_TEST_PRIVATE_KEY1=<your REMOTE_TEST_PRIVATE_KEY1>
set REMOTE_TEST_PRIVATE_KEY2=<your REMOTE_TEST_PRIVATE_KEY2>
```

### 6. Setup in Python

In your working console, run Python:

```bash
python
```

In the Python console:

```python
# Create Ocean instance
import os
from ocean_lib.example_config import get_config_dict
from ocean_lib.ocean.ocean import Ocean
config = get_config_dict("https://polygon.llamarpc.com")  # or use another RPC URL, or an Infura one
ocean = Ocean(config)

# Create OCEAN object. ocean_lib knows where OCEAN is on all remote networks
OCEAN = ocean.OCEAN_token

# Create Alice's wallet
from eth_account import Account

alice_private_key = os.getenv('REMOTE_TEST_PRIVATE_KEY1')
alice = Account.from_key(private_key=alice_private_key)
assert alice.balance() > 0, "Alice needs MATIC"
assert OCEAN.balanceOf(alice) > 0, "Alice needs OCEAN"

# Create Bob's wallet. While some flows just use Alice wallet, it's simpler to do all here.
bob_private_key = os.getenv('REMOTE_TEST_PRIVATE_KEY2')
bob = Account.from_key(private_key=bob_private_key)
assert bob.balance() > 0, "Bob needs MATIC"
assert OCEAN.balanceOf(bob) > 0, "Bob needs OCEAN"

# Compact wei <> eth conversion
from ocean_lib.ocean.util import to_wei, from_wei
```

If you get a gas-related error like `transaction underpriced`, you'll need to change the `maxFeePerGas` or `maxPriorityFeePerGas`.