Add ERC20 Quadratic Voting Strategy

[devshib93]

Add ERC20 Quadratic Voting Strategy

What does this PR do?

Adds a new quadratic voting strategy for ERC20 tokens that applies square root to token balances, reducing the voting power of large holders while maintaining proportional representation for smaller holders.

Changes Made

• ✅ Add erc20-quadratic-voting strategy implementation
• ✅ Apply votingPower = √(tokenBalance) formula
• ✅ Include comprehensive documentation and examples
• ✅ Register strategy in main index.ts
• ✅ Pass all validation tests

How it Works

The strategy calculates voting power using the square root of token balances:

Token Balance	Linear Voting Power	Quadratic Voting Power
100 tokens	100	10
400 tokens	400	20
900 tokens	900	30
1600 tokens	1600	40

Benefits

1. Decentralization: Prevents large token holders from dominating governance
2. Fairness: Gives smaller holders meaningful voting power
3. Simplicity: Easy to understand and implement
4. Compatibility: Works with any ERC20 token

Testing

• ✅ Strategy loads correctly
• ✅ Examples are valid
• ✅ Performance is acceptable (< 10 seconds)
• ✅ Works with multiple addresses

Usage Example

{
  "strategies": [
    [
      "erc20-quadratic-voting",
      {
        "address": "0x6b175474e89094c44da98b954eedeac495271d0f",
        "symbol": "DAI",
        "decimals": 18
      }
    ]
  ]
}

Checklist

• Strategy is unique and not a duplicate
• Strategy uses snapshot for voting power calculation
• Strategy has maximum 5 requests
• Strategy doesn't send request for each voter
• Strategy doesn't add new dependencies
• Strategy returns same casing for addresses
• Strategy voting power doesn't depend on other addresses
• Example includes at least 1 address with positive score
• Example uses snapshot block number in the past
• Strategy takes less than 10 seconds to resolve
• Strategy works with 500 addresses

[ChaituVR]

Hello! i think math strategy should work for you in this case, you tried already?

[devshib93]

Yes, I have tried with erc20-balance-of-cv, and it is same. Thanks.