Deploys a OIP20 smart contract with a message, and renders it in the front-end. You can interact with the smart contract easily! This dapp implements a "Hello World" style application that echoes a message passed to the contract to the front end. This tutorial is intended to be followed using the online IDE available at Remix IDE.
The first line,
pragma solidity ^0.5.16 specifies that the source code is for a Solidity version greater than 0.5.16. Pragmas are common instructions for compilers about how to treat the source code (e.g., pragma once).
A contract in the sense of Solidity is a collection of code (its functions) and data (its state) that resides at a specific address on the Ethereum blockchain. Learn more about the constructor and memory in the docs.
Now, We have to deploy our smart contract on OKBC Network. For that, we have to connect to web3 world, this can be done my many services like Metamask, Brave, Portis etc. We will be using Metamask. Please follow this tutorial to setup a Metamask Account.
Open Metamask and select Custom RPC from the networks dropdown
Go to setting page
Add a new network
Block Explorer: https://www.oklink.com/okbc-test
Go ahead and click save
Copy your address from Metamask
Head over to Faucet and request test OKB
Now, let's Deploy the Smart Contract on OKBC Testnet
Select Injected Web3 in the Environment dropdown and your contract
Accept the Connection Request!
Once Metamask is connected to Remix, the ‘Deploy’ transaction would generate another metamask popup that requires transaction confirmation. Congratulations! You have successfully deployed a OIP20 Contract. Now you can interact with the Smart Contract. Check the deployment status here: https://www.oklink.com/okbc-test
If contract creation initialization returns data with length of more than 24576 bytes, contract will be fail to created with "Contract code size over limit" error due to EIP-170. Check the "Enable optimization" checkbox when compiling to solve this error of some large size contracts.