Snowball: A Decentralized Crowdfunding Platform

Overview

Snowball is a decentralized fundraising and DAO management smart contract system that allows users to create and manage DAOs with specific funding goals, milestones, and transparent fund disbursement. The system integrates with a MongoDB server for data storage and a Next.js frontend for user interaction, and is deployed on Avalanche’s Layer 1 (L1) network for fast, scalable, and low-cost transactions.

DFactory.sol

Description

The daoFactory contract manages the creation and tracking of decentralized autonomous organizations (DAOs) within the Snowball ecosystem. It allows users to deploy DAOs with specified funding goals and durations.

Key Features

• DAO Tracking: Maintains mappings to track DAOs created by users.
• DAO Structure: Defines a dao struct containing:
  • address dao: The DAO contract address.
  • address creator: The creator of the DAO.
  • string campaignID: A unique campaign identifier.

Functionality

• Creates DAOs with funding goals and milestones.
• Stores DAOs under user mappings.

Dependencies

• Imports DFund.sol to manage fundraising functionality.

DFund.sol

Description

The DFund contract handles decentralized fundraising, milestone tracking, and fund distribution within the Snowball project.

Key Features

• Error Handling: Implements custom errors for security and validation.
• Milestone Structure: Defines a milestone struct with:
  • string milestoneDescription: Description of the milestone.
  • uint256 votes: Number of approvals from funders.
  • bool approved: Indicates if the milestone is approved.
  • bool claimed: Tracks if funds have been claimed.
  • string finishedMile: Marks completed milestones.

Security Mechanisms

• Prevents reentrancy attacks.
• Ensures only funders and creators can perform actions.

Fund Management

• Handles fund collection, milestone approval, and fund disbursement.

MongoDB Server

The Snowball project utilizes a MongoDB server for persistent storage of DAO data, fundraising milestones, and user interactions. The MongoDB database allows for scalable, fast access to data related to DAOs and fundraising campaigns, supporting features like:

• Storing DAO metadata (creator, campaign ID, funding goal, etc.)
• Tracking milestone status and fund distribution
• Managing user data (contributors, approvals, etc.)

Next.js Frontend

The Snowball project features a Next.js frontend that serves as the user interface for interacting with the decentralized ecosystem. The frontend communicates with the smart contracts deployed on Avalanche or other blockchains and provides users with a seamless experience to:

• Create and manage DAOs
• Track campaign progress and milestones
• Contribute to fundraising efforts
• View DAO and fundraising details (including milestones, goals, and approvals)

The frontend is designed for scalability, accessibility, and ease of use, with responsive design and integrations with Web3 technologies.

Libraries & Tools Used

• Wagmi: A React hooks library for Ethereum used for wallet connection and account management.
• RainbowKit: Provides the wallet connection button (ConnectButton) for easy wallet interactions.
• AvaCloud SDK: Used to integrate Avalanche blockchain functionality with @avalabs/avacloud-sdk.
• Fuji Testnet: A development and testing environment for deploying and testing smart contracts.

Steps to Launch Snowball on Avalanche’s Layer 1 (L1)

Step 1: Create Snowball Blockchain

avalanche blockchain create SnowballNet --sovereign=false

select:

• subnetEVM
• default values
• block ID: 6697108108115
• Token symbol: SNWB

Step 2: Deploy Snowball Blockchain'

avalanche blockchain deploy SnowballNet

select:

• localhost

Watch Snowball Live