Oasis Ethereum ParaTime

Testnet deployment

Getting Started

If we want to deploy the smart contract for test purposes, we can use the Oasis Ethereum ParaTime, let's view the required steps from the following page:

Oasis Ethereum

The steps we need to follow, are:

1. Go to the BUIDL for Oasis Ethereum IDE.
2. Click on "Accounts", and use as many as you want. To test the full functionality of Akasify, we will use three, one for each role (administrator, organization, and beneficiary). If you already have some accounts, you can import them too.

3. Fund the accounts that will interact with the smart contract storing any information. For this, copy the eth address and fund it in the OETH faucet.
4. Write and deploy the smart contract.

Write and deploy from Buidl IDE

If you plan to do it using the Buidl IDE, then follow the next steps:

1. Select the "Contract" button on the left side of your screen.

2. Select your Solidity version from the dropdown on the upper left side of the screen.

3. Write the smart contract on the right screen.

4. Once it's ready you can click on "Compile" on the upper left side of your screen.

5. If your code has no error it should show the ABI code on the left side of the screen.

6. Finally, depending on your smart contract constructor arguments you would need to add the respective arguments and you can click on "Deploy".

7. This will take your default account, which should have enough funds to deploy your contract, and ready! you have your smart contract on the Oasis Ethereum ParaTime.

Write and deploy from local

If you plan to do it using your local project, then follow the next steps:

Connect Metamask with Oasis Ethereum ParaTime

1. Open your Metamask plugin.

2. Select networks.

3. Click on "Custom RPC", and for the new network let's add the following values:

   1. Network Name: ParaTime

   2. New RPC URL: https://rpc.oasiseth.org:8545
   3. Chain ID: 69

4. Click on save, and ready, we have connected our Metamask!

5. Do you remember the previous three accounts that will interact with the smart contract? Well, now we can import them into Metamask connected to the ParaTime network.

6. Now you should be able to see the OETH faucet fund deposited into these accounts in the previous steps.

Ok, so now we're ready with our Metamask properly connect to the Oasis Ethereum ParaTime, with our accounts imported, and all of them with enough funds to interact with the contract. Now let's deploy our contract!

Deployment

Depending on the stack you're using, this configuration could slightly change. In this tutorial, we will use Hardhat to deploy the smart contract.

Configurations

Let's add a new network configuration into our hardhat config file

Let's add the following network config:

hardhat.config.js

...
paratime: {
  url: "https://devchain.secondstate.io:8545", //<---- ES Provider Endpoint
  accounts: {
    mnemonic: mnemonic(),
  },
}
...

You can replace the mnemonic() function for a string of the mnemonic works like this:

"word_x word_y word_z ...".trim()

...
    mnemonic: "word_x word_y word_z ...".trim()
...

Please, remember the address from this mnemonic will be the creator of the smart contract, and it should have enough OETH funds to deploy the smart contract on the blockchain.

Now, we just change the default network (usually localhost) for the one created paratime.

yarn deploy

And ready! we've deployed our smart contract into the Oasis Ethereum ParaTime!