CircEveryBid

CircEveryBid is a private auction platform combining:

• 🔒 Uniswap v4 - Privacy-preserving Continious Clearing Auctions with ZK sealed bids, dynamic MPS optimization
• 🔵 Circle- cross-chain transfers with CCTP, Gateway onboarding and balance for the transfers
• 🏅 ENS - Reputation-based auction creation verification - serves as a ledger of initial auction data
• ⚡ Arc- Gateway wallets on Arc (among other) used for bidding
• 🔐 ZK Privacy - Poseidon commitments with nullifier registry

Sealed Bids

• Poseidon hash commitments
• Nullifier registry (prevents double-bidding)
• Private bid amounts
• JSON export & IPFS support

ENS: Ledger for auctions

• Auction creator and auction verification

Cross-Chain Deposits

• Circle CCTP integration
• Circle Gateway wallet integration
• Arc as one of liquidity hubs
• Multi-chain USDC support
• Automatic attestation retrieval

Auction Creation

• Uniswap v4 factory integration
• Dynamic Market Participation Score (MPS) optimization --> novel approach to improve current Uniswap CCA !
• Real-time auction monitoring

How is MPS Calculated? MPS = 10,000 - HHI This inverts Herfindahl-Hirschman Index (HHI) so that higher MPS = more competitive: MPS 8,000-10,000: Highly competitive (many equal bidders) MPS 5,000-8,000: Moderately competitive MPS 2,500-5,000: Moderately concentrated MPS 0-2,500: Highly concentrated (dominated by few)

How CircEveryBid Optimizes MPS CircEveryBid uses Pyth Network price feeds and on-chain optimization to: -Read sealed bids from the Poseidon commitment contract

• Calculate real-time HHI based on bid distribution
• Fetch live ETH/USD prices from Pyth oracles
• Compute optimal tick spacing to maximize participation
• Submit MPS updates to the on-chain MPS Mutator contract

This mirrors how institutional auctions (Treasury, IPO) optimize for fair market participation, now on-chain with ZK privacy for Uniswap's CCA.