Create your own coin (ERC20)

This is a basic project to explain how to deploy and transfer your own coin
This project is used to demonstrate in practice how to use a blockchain, with the following steps
- Update the contract contracts/MyErc20Token
- Deploy this contract
- Check the contract in blockchain explorer
- Execute transactions in the contract through scripts and metamask

BRL

If you use Linux, just type the following command line in console to install node

$~ curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -
$~ sudo apt install nodejs

To check the installed versions, use node -v ; npm -v

$~ git clone https://github.com/RafilxTenfen/create-your-coin.git

$~ cd create-your-coin/

To carry out all the steps of this project, some environment variables are needed.
Start by copying the file .env.example to .env

## Unix
$~ cp .env.example .env
## Windows
$~ copy .env.example .env

This environment variable is used to check contracts through hardhat package scripts
To acquire the environment variable ETHERSCAN_API_KEY
Access etherscan
Register and/or login
After entering, click on API-KEYs
Add a new key by clicking the add button
Copy the created key and replace it in the copied file .env in the key ETHERSCAN_API_KEY

This environment variable is used to connect to a node of the Ethereum test blockchain network, called Goerli and so be able to send transactions through these nodes
Let's use Infura
Perform the login
Click in ETHEREUM
Click on the first project if you have it, if not click on CREATE NEW PROJECT
Click in SETTINGS
Select Goerli in the field ENDPOINTS
Copy the Goerli URL HTTPS
Replace in file .env the key GOERLI_URL

The environment variable PRIVATE_KEY is your wallet's private key, which is used to sign your transactions on the blockchain
Go to the metamask extension

It is not necessary to select the Goerli network

To be able to carry out transactions it is necessary to pay fees on the blockchain network
In the main chain it is certainly expensive to carry out transactions
On the goerli test network you can purchase for free to perform xD tests
In test networks, the funds are called faucet, in the case of the goerli's network click here
Copy your Metamask address
Enter your network address (can be copied into metamask extension) Paste your address in the field and click on Send me test Ether
Wait a few moments (about 2 minutes)
Select the Goerli network in your metamask extension
Check your balance, it should be something around 0.3 Ether, which will be more than enough for our tests.

$~ npm install

Go to the contracts/MyErc20Token.sol file on line 8 and enter in the first parameter the name of your currency, and in the second parameter the symbol of your currency
- Use a maximum of 15 characters for the first parameter (currency name)
- Use a maximum of 5 characters for the second parameter (currency symbol)
Compile the contract with the following command

$~ npm run compile

$~ npm run deploy

$~ npm run verify

Expected result

Replace the address with your contract address