GridMint

GridMint is a decentralized physical infrastructure network (DePIN) protocol that enables real-time micro-energy trading between autonomous agents. Built on Arc Testnet with Circle USDC settlement, the system demonstrates how blockchain can power next-generation energy markets with radical cost efficiency, achieving 24,700× lower gas costs compared to Ethereum. The protocol features autonomous solar producers, battery storage operators, and consumer agents that trade energy every 3 seconds using game-theoretic pricing mechanisms. Schelling point convergence ensures fair market prices through multiplicative weights learning, while Shapley coalitions enable battery-solar cooperation for grid stability. An x402 paywall demonstrates API monetization, and Google Gemini AI provides real-time market analysis and autonomous battery trading decisions. All transactions settle on-chain via Circle USDC, with verifiable proof available on ArcScan. The system showcases the future of micro-commerce: instant, low-cost, autonomous payments at scale.