Whitelisting users for the crowdsale

Sometimes, you may want your sale to be private or you need to provide an increased bonus to a set of users. For these situations, a whitelisting contract is created to keep track of a certain set of users. This allows you to restrict operations between them to provide a more personalized approach.

In this recipe, you will learn to create a whitelisting function that can be used along with the crowdsale contract.

Getting ready

You need to have a development environment that supports solidity programming and an Ethereum network to deploy and test your code.

Since the contract extends the crowdSale contract created in the Building your own Initial Coin Offering recipe, it is recommended...