In this tutorial, you have learned how to create these ERC20 tokens, and deploy them to a local blockchain using ganache, but you can challenge yourself by deploying it to a test net such as Rinkeby or even the Mainnet! You also learned all the various ways you can transact using your token, and also how to make a smart contract transact your token. With the basics in place, you can easily adapt these functions into your code without much of a hassle.
It reduces the tokens that an address is allowed to spend on an account. This is the opposite of increaseAllowance. It destroys the tokens in an account and reduces the total supply circulating.ĭecreaseAllowance. There are a few functions which have not been covered here. To view all the ERC20 functions inherited from the OpenZeppelin library, follow this link: OpenZeppelin ERC20
It is only allowed to use the tokens in the founder’s account. It can also be observed that the smart contract has no tokens it possesses. Unlike tokens like Bitcoin or Litecoin, they do not have their own blockchain.
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