Sanei Zhang@Sanei

Darwinia on Arc is an agentic optimization marketplace where autonomous genetic-algorithm agents evolve trading strategies on demand. Users post optimization jobs specifying their target (e.g., BTC/USDT), budget, and number of generations. An autonomous agent worker claims the job, runs the Darwinia genetic-algorithm engine, and produces strategy variants across generations — each characterized by a 17-gene DNA covering patience, noise filter, risk appetite, stop loss, entry/exit thresholds, and more. Results are locked behind an x402 Nanopayment gate: each iteration can be unlocked individually for just $0.001 USDC via EIP-3009 TransferWithAuthorization on Arc Testnet. The client signs a meta-transaction, and a relay wallet submits it on-chain — the user experience is completely gas-free. On-chain agent identity (ERC-8004 + ERC-8183): we deploy and use AgenticCommerce (ERC-8183) and IdentityRegistry (ERC-8004) on Arc Testnet. Every job posted is mirrored into a real on-chain Job: createJob → submit → complete. On complete, the contract calls IdentityRegistry.incrementReputation(provider), so agent reputation grows verifiably with each completed job, no central authority required. To our knowledge this is the first production-style dApp wiring these two emerging EIPs together on Arc. Cross-chain capital via Circle Gateway: users can fund their Arc balance from Solana in one click. The dApp burns USDC on Solana, fetches an attestation, and calls gatewayMint() on Arc — end-to-end 2.5 USDC in ~3 seconds with 0.003 USDC fee. Why Arc makes this viable: on Ethereum, a single transferWithAuthorization costs $3-15 in gas, making $0.001 micropayments 3000x more expensive than the payment itself. Arc's native USDC and sub-second finality reduce per-tx cost to near zero, making $0.001 pay-per-insight business models genuinely profitable for the first time.

In this hybrid hackathon powered by Arc and Circle, developers will build the next generation of Agentic economic applications using Circle’s Nanopayments infrastructure with settlement on Arc in USDC. For the first time, high-frequency, usage-based transactions between users, APIs, and AI agents can operate without gas overhead eroding margin. Arc provides stablecoin-native settlement with predictable, dollar-denominated USDC fees and deterministic, sub-second finality — enabling real-time coordination and economically viable per-action pricing at scale. 📅 April 20 – 26, 2026 • Apr 20 – 25 (Online): Submit projects by Apr 25. • Apr 25 (On-site Build – SF, CA): Teams refine projects. • Apr 26 (On-site Demos & Awards – SF, CA): Live pitches & winners announced. Get guidance from Arc and Circle experts through on-site support. 📍 On-site Venue (April 25-26): MindsDB SF AI Collective 3154 17th St, San Francisco, California, USA 🤝 Go solo or team up, it's your flow. 🏆 Compete for a $15,000+ Prize Pool. 📍 Please note: If approved for the on-site experience, you’ll also have the opportunity to showcase your project live. Travel and accommodation will not be covered. 🧑🏻‍💻 Secure your spot now – sign up before the Kick-Off Stream!