You will be editing this code for your own ICO Contract. Ropsten Ethers [UPDATED]. We have created our own faucet where you can request. This Ethereum tutorial demonstrates how you can create and deploy your own Well, there are a number of ways of setting the maximal number of ICO tokens. I'll show you how to create your own ERC token and crowd sale the smart contracts to the Ethereum blockchain, and how to build an ICO. Unlike Bitcoin, Ethereum is also a platform that allows you to create your own token without creating a new blockchain. In other words, most Ethereum contracts out there today are ERCcompliant. It fails if the user doesn't have enough tokens to transfer, i. It also provides some suggested functions that are nice to have, but ultimately optional. It stores the token price uint public tokenPrice.