Smart Contracts

All HUB Voting contracts are deployed on Base, verified on BaseScan, and open source.

Contract Addresses

Base Sepolia (Testnet)

Base Mainnet

HubToken

The native token of HUB Voting. Standard ERC-20 with burn support and EIP-2612 permit (1-click approve+vote).

HubVotingV3

The core voting contract. Handles burn-to-vote mechanics and tracks on-chain reputation data for every voter.

What it does

• Burns 1 HUB per vote (100%, no protocol fee)
• Accepts votes for tokens on any blockchain
• Tracks per-user reputation on-chain
• Normalizes addresses and blockchain names for consistent hashing
• Emits VoteExecuted and ReputationUpdated events for indexing

On-chain reputation tracked

Key parameters

Voting methods

• vote() — Standard vote (requires prior ERC-20 approval)
• voteWithPermit() — 1-click vote using EIP-2612 signature (no separate approval tx)

Security

• ReentrancyGuard on all state-changing functions
• Pausable by owner for emergencies
• Blacklist mechanism for malicious actors
• String length limits to prevent abuse
• Address and blockchain normalization to prevent hash collisions

HubReputation

The Hub Score oracle. Reads voting data from HubVotingV3 and combines it with Arena participation to compute a single reputation score.

What it does

• Reads vote data directly from HubVotingV3 (trustless, no intermediary)
• Stores Arena participation via an authorized updater
• Computes getHubScore() with configurable weights
• Exposes hasMinimumReputation() for easy integration

Score formula

Hub Score = (votes × 5) + (burned × 10) + (tokens × 50, cap 20)
          + (chains × 100, cap 5) + (streak × 200)
          + (arenaJoined × 200) + (arenaWon × 1,000)

Integration Example

Gate your airdrop, presale, or governance:

interface IHubReputation {
    function getHubScore(address user) external view returns (uint256);
    function hasMinimumReputation(address user, uint256 minScore)
        external view returns (bool);
}
 
IHubReputation hubRep = IHubReputation(0xf8d9792dC0decd11769b2D771Ef2B792AF301364);
require(hubRep.hasMinimumReputation(msg.sender, 5000), "Hub Score too low");

API Access

HubBattleArenaV6

The Arena reward campaign system. Projects deposit reward tokens and burn 12,500 HUB to create a campaign. Community members lock HUB, vote for the campaign’s token, and earn rewards proportional to their votes.

Key parameters

For Voters

For Project Creators

Eligibility features

• Optional minimum HUB voting history requirement
• Optional presale-only restriction
• Single participation per campaign (no double-joining)

Security

All contracts use OpenZeppelin standard libraries (Ownable, ReentrancyGuard, Pausable), custom errors for gas-efficient reverts, comprehensive event logging, and emergency pause capabilities.

Verify on BaseScan

All contracts are verified and open source. Always verify you’re interacting with the official addresses:

• HubToken 
• HubVotingV3 
• HubReputation 
• HubBattleArenaV6 
• HubBattleArenaV7 
• HubPresale