Initial Coin Offer (ICO) Web3 – ENVO DApp & Solidity Contract

Introduction

In recent years, Initial Coin Offerings (ICOs) have gained popularity as a way for blockchain projects to raise funds from a large number of investors. One of the most interesting and innovative projects in the field of ICOs is the ENVO DApp, which uses a Solidity contract to create a decentralized application (DApp) on the Ethereum blockchain. In this tutorial, we will guide you through the process of using the ENVO DApp and its Solidity contract.

What is ENVO DApp?

ENVO DApp is a decentralized application that allows users to create, manage, and participate in Initial Coin Offerings (ICOs). It is built on top of the Ethereum blockchain using the Solidity programming language. The ENVO DApp provides a decentralized and secure way for blockchain projects to raise funds from a large number of investors, without the need for intermediaries.

Components of the ENVO DApp

The ENVO DApp consists of the following components:

1. Solidity Contract: The Solidity contract is responsible for managing the ICO process. It defines the rules and logic for the ICO, including the amount of funds to be raised, the duration of the ICO, and the allocation of funds to investors.
2. Frontend DApp: The frontend DApp is the user interface of the ENVO DApp. It allows users to interact with the ICO process, including creating a new ICO, contributing funds, and tracking the progress of the ICO.
3. Smart Contract Deployer: The Smart Contract Deployer is a tool that deploys the Solidity contract on the Ethereum blockchain. It also configures the contract to accept Ether (ETH) contributions.

Prerequisites

Before starting this tutorial, you will need the following:

1. Node.js: Node.js is a JavaScript runtime environment that is required to run the ENVO DApp frontend.
2. Metamask: Metamask is a browser extension that allows you to interact with the Ethereum blockchain in a secure and convenient way.
3. Ether (ETH): Ether (ETH) is the cryptocurrency used by the ENVO DApp. You will need to have a sufficient amount of ETH in your Metamask wallet to participate in the ICO.

Step 1: Set up your Ethereum Wallet

To start, you will need to set up your Ethereum wallet. You can use any wallet that supports the Ethereum network, such as Metamask or MyEtherWallet. Make sure to have a sufficient amount of ETH in your wallet to participate in the ICO.

Step 2: Create a new ICO

To create a new ICO, go to the ENVO DApp frontend and click on the "Create ICO" button. Fill in the required information, including the name of your ICO, the amount of funds to be raised, and the duration of the ICO. Click on the "Create" button to create a new ICO.

Step 3: Deploy the Solidity Contract

Once you have created a new ICO, you will need to deploy the Solidity contract on the Ethereum blockchain. You can use the Smart Contract Deployer tool to do this. Simply click on the "Deploy Contract" button and follow the instructions to deploy the contract.

Step 4: Contribute funds

To contribute funds to the ICO, go to the ENVO DApp frontend and click on the "Contribute" button. Select the ICO you want to contribute to and enter the amount of funds you want to contribute. Click on the "Contribute" button to complete the contribution.

Step 5: Track the ICO progress

To track the progress of the ICO, go to the ENVO DApp frontend and click on the "Track ICO" button. You can see the current amount of funds raised, the total amount of funds to be raised, and the number of days remaining in the ICO.

Conclusion

In this tutorial, we have covered the process of using the ENVO DApp and its Solidity contract. We have shown you how to create a new ICO, deploy the Solidity contract, contribute funds, and track the progress of the ICO. By following these steps, you can participate in an ICO in a decentralized and secure way, without the need for intermediaries.

Code Example

Here is an example of the Solidity contract code for the ENVO DApp:

pragma solidity ^0.6.0;

contract ENVO_ICO {
    address public owner;
    uint public fundraisingGoal;
    uint public startTime;
    uint public endTime;
    uint public currentAmountRaised;
    mapping (address => uint) public contributors;

    constructor(uint _fundraisingGoal, uint _startTime, uint _endTime) public {
        owner = msg.sender;
        fundraisingGoal = _fundraisingGoal;
        startTime = _startTime;
        endTime = _endTime;
        currentAmountRaised = 0;
    }

    function contribute(uint amount) public {
        require(now >= startTime && now <= endTime, "ICO has ended");
        require(msg.sender!= owner, "Owner cannot contribute");
        require(amount > 0, "Invalid contribution amount");

        currentAmountRaised += amount;
        contributors[msg.sender] += amount;

        emit ContributionReceived(msg.sender, amount);
    }

    function checkFundingGoal() public view returns (bool) {
        return currentAmountRaised >= fundraisingGoal;
    }

    event ContributionReceived(address contributor, uint amount);
}

This code defines the rules and logic for the ICO, including the amount of funds to be raised, the duration of the ICO, and the allocation of funds to investors.