In this tutorial we’ll see how to decode and make sense of event logs generated by Ethereum transactions. This tutorial will guide you on getting a transaction receipt and getting the data related to one event in their original types using the abi-decoder library. For this tutorial you’ll need : the ABI of the smart […]
Category: erc20
Flash Loans are loans that allow the borrowing of an asset, as long as the borrowed amount (and a fee) is returned before the end of the transaction. Those types of loans enable you to perform actions without using your funds for a really small percentage fee (0.09% at the time of writing on Aave […]
For this tutorial will see how to execute a trade using 1inch DEX aggregator in Javascript with the web3.js library. At the end of the tutorial, you’ll know how to exchange ERC20 tokens and Ether directly on the Ethereum blockchain. This article is part 2 (part 1 here) of tutorials we started while using the […]
In the previous tutorial we learnt how to send a transaction to an Ethereum smart contract, we’ll now see how to wait for a transaction to be mined and get it’s result. When you sbumit a transaction to the blockchain, you’ll receive the transaction hash of the new transaction. In order to wait for the […]
In this tutorial we’ll see how to call a smart contract function from JavaScript. First is reading the state of a smart contract (for eg the balance of an ERC20 holder), then we’ll modify the state of the blockchain by making a token transfer. You should be already be familiar with setting up JS environement […]
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ABI for ERC20 contract on Ethereum
Here you can find the ABI for the ERC20 token standard: You can see dome of our tutorial abour ERC20 tokens here:
In the previous tutorial we studied the anatomy of an ERC20 token in Solidity on the Ethereum blockchain. In this article we’ll see how we can use a smart contract to interact with a token using the Solidity language. For this smart contract, we’ll create a really dummy decentralized exchange where a user can trade […]
One of the most significant smart contract standard on Ethereum is known as ERC-20, which has emerged as the technical standard used for all smart contracts on the Ethereum blockchain for fungible token implementations. The ERC-20 defines a common list of rules that all Ethereum tokens must adhere to. Consequently, this token standard empowers developers […]