DAOMetra Project

Advanced Solidity Smart Contract Project by Alessandro Ponton

DAOMetra is an implementation of a DAO (Decentralized Autonomous Organization) on the Ethereum blockchain.

The project consists of two main smart contracts:

1. DAOMetraToken.sol: An ERC20 token representing the DAO's tokens.
2. DAOMetra.sol: The main DAO contract managing governance.

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Technical Features

DAOMetraToken

• Implements the ERC20 standard for maximum compatibility.
• Token Name: "Demtoken".
• Symbol: "DMTK".
• Decimals: 18 (ERC20 standard).
• Administration system controlled by the DAO.
• Protections against zero addresses and overflow/underflow.
• Events to track transfers and administrative changes.

DAOMetra

• Share-based voting system.
• Fixed price of 110 tokens per share.
• Voting period of 1 week.
• 24-hour timelock for proposal execution.
• 51% quorum for proposal approval.
• Supports voting, abstaining, and voting against proposals.

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Key Features

Token Management

• Purchase shares in exchange for tokens.
• Secure transfers with balance checks.
• Approval system for delegated spending.

Governance System

• Proposal creation by members.
• Weighted voting based on shares held.
• Timelock for added security.
• Quorum system for significant decisions.

Security and Implemented Controls

• Balance checks before transfers.
• Zero address checks.
• Timelock to prevent flash loan attacks.
• Role-based permission system.

Administrative Rights

• Initial administration assigned to the deployer.
• Administration transferred to the DAO.
• Access controls for critical functions.

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Versions and Compatibility

• Solidity: v0.8.20.
• EVM Version: Paris.
• Optimization: Enabled (200 runs).

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Deployment

The contracts have been deployed on the Sepolia testnet:

• DAOMetraToken: 0x8017b00a1217EcbA1998f62f948379FDe187D0A2.
• DAOMetra: 0xBBcFf03a5dE9987dE141AAD29b8b9E89e2e1Cb28.

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Testing

The project includes a comprehensive test suite covering:

• Contract initialization.
• Share purchase.
• Proposal creation and management.
• Voting system.
• Timelock functionality.

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Share System

• Shares represent voting power in the DAO.
• Fixed price ensures fairness in purchases.
• Non-transferable to maintain governance stability.

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Timelock

The 24-hour timelock implementation:

• Protects against rapid attacks.
• Allows members to react to suspicious proposals.
• Adds a layer of security to governance.

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Security Notes

• Events implemented to track all critical actions.
• Voting system protected against manipulation.
• Timelock safeguards against flash loan attacks.