In a smart contract, the terms of the buyer-seller agreement are encoded in code and kept on a blockchain, where they may be self-executed. Self-executing contracts built on the blockchain have the major advantage of being secure. In addition, they provide accuracy, efficiency, speed, transparency, and confidence. Smart contracts remove the need for intermediaries and the costs and time delays that come with them since they only activate when the criteria specified in the contract are satisfied.
To help you get started, here is a step-by-step tutorial to establishing a smart contract. We’ll walk you through the steps of creating smart contracts on Ethereum. since it’s the most essential blockchain for this purpose.
Creating an account on MetaMask
Install MetaMask and activate it in Chrome. Open a new browser tab by clicking on the symbol in the upper right corner of the browser page.
Create a wallet by clicking “I agree” on the Create Wallet page and then continue. Then, you’ll be prompted to create a password for your account.
It is possible to back up and recover your account using a secret backup phrase that is sent to you once you create your password. You should keep this information to yourself since sharing it might result in you losing your ethers.
Make sure you’re connected to the Main Ethereum Network at this point. You know you’re at the proper spot if you see a checkbox next to “Main Ethereum Network”.
Smart contracts may be tested on a variety of networks.
We now need to pick one of these networks as a test. There are likely to be the following networks in your MetaMask wallet:
- Goerli Test Network
- Robsten Test Network
- Rinkeby Test Network
- Kovan Test Network
The ethers on the aforementioned networks are only for demonstration purposes.
Filling the wallet with fake Ethers
For smart contract testing, it is essential to have fake Ethers in your wallet.
If you want to test your smart contract on the Robsten testnet, for example, you must first pick it and then see a balance of 0 ETH in your account.
Because of this, you must deposit and then get fake Ethers by clicking on “Deposit” and then on “Get Ether” on the Test Faucet.
You may begin creating your smart contract in Solidity using the Remix Browser IDE after receiving the fake Ethers in your wallet.
For building a smart contract in Solidity, Remix may be used.
The Remix Browser IDE is required to write Solidity code. As a smart contract developer, Remix is the best tool for the job since it’s feature-rich and provides a seamless experience.
It’s more often used by programmers to construct short contracts.
Creating a.sol file. ‘
The “+” icon in the upper left corner of the Remix Browser page allows you to generate a.sol file extension.
Token-creation code for ECR20
pragma solidity 0.4.0;import “./ERC20.sol”;contract is the standard ERC20 token template. It is an ERC20 token. public uint256 totalAmount; string tokenName; string tokenSymbol; and uint256 decimal are all public properties of the mapping. In this example, the total sum is 10000 x 10 x 18 = 10000 x 10 x 18 = 10000 it returns the public view of the method totalSupply() (uint256) totalAmount must be returned. int uint256; balanceOf(address to who) public viewreturns(uint256) uint256 value is returned by the public transfer function (bool) Amount[msg.sender] – _value; Amount[msg.sender] + _value; True;
First, the smart contract must be deployed.
Right next to the Remix window is a deploy button that you must press in order to put the smart contract into action on Ethereum’s test network.
On the right side of the Remix window, you’ll find a link to the smart contract’s address. The person that deploys the smart contract will get the ERC20 tokens produced by the smart contract.
To see whether you have these tokens in your wallet, open the MetaMask window, click on add tokens, type in the smart contract address, and then click ok to confirm your findings. This will reveal how many tokens are in the device.
Simple monetary transactions to smart access management in the sharing economy may both benefit from Ethereum smart contracts, as can smart contracts created on any other blockchain network. Because of their adaptability, they’ve become popular in a variety of sectors. Telecommunications, transportation, art, education and the music industry are just a few examples of areas where these contracts are used. If you are a developer, learning how to create a smart contract on a popular platform like Ethereum may be quite beneficial. For an enterprise-grade solution that will run without hiccups, you should contact a smart contract creation business.