aspg-2-287-1791417058 20261007235058 American Scientific Publishing Group admin@americaspg.com American Scientific Publishing Group Journal of Cybersecurity and Information Management JCIM 2769-7851 2690-6775 2020 2 1 Ashish Sharma CSE Department, Faculty of Computer Science, Maharaja Agrasen Institute of Technology, India Yogesh Sharma CSE Department, Faculty of Computer Science, Maharaja Agrasen Institute of Technology, India Radhika Bansal CSE Department, Faculty of Computer Science, Maharaja Agrasen Institute of Technology, India Sushant Verma CSE Department, Faculty of Computer Science, Maharaja Agrasen Institute of Technology, India The paper aims at creating ERC-20 Token and crowd sale step-by-step with Ethereum smart contracts. In the process, it focuses on testing the smart contracts, deploying the smart contracts to the Ethereum blockchain, and building an ICO website deployed to the web for the buying and selling of the tokens. The Ethereum blockchain provides a platform for creating our cryptocurrency, or tokens that can be purchased via Ether which is the native cryptocurrency of the Ethereum blockchain. ERC-20 is a standard document that specifies the behavior of the tokens so that they are compatible with other platforms like cryptocurrency exchanges. We used Ethereum which is a blockchain like Bitcoin. We created a token called "Token" and there are 100,000,000 such tokens. Firstly, the token smart contract keeps track of some token attributes which are basic. It also keeps track of who owns "My Token" and how much. ERC-20 tokens can be used as a payment just, just like any other cryptocurrency, from one account to another. They can also be purchased in a crowd sale, like an ICO. 2020 05 12 287 https://creativecommons.org/licenses/by/4.0/ 10.54216/JCIM.020101 https://www.americaspg.com/journal/2/article/287 https://www.americaspg.com/storage/1157.pdf