Jody Aryono@jodyaryono

Marketplace Jamaah AI is a LIVE WhatsApp-native marketplace serving 253 Indonesian Muslim community members with 98 active listings since March 2026. THE PROBLEM: Millions of Indonesian small sellers — like Bu Fatimah, a hijab seller from Tangerang — are comfortable with WhatsApp but cannot navigate complex e-commerce platforms. They already use WhatsApp Groups as their informal store, but listings get buried, admins burn out moderating 24/7, and manual bank transfers create fraud risks with no escrow. OUR SOLUTION: We bring the marketplace TO where sellers already are — WhatsApp. An AI Admin bot greets new members, extracts listing details from free-form Indonesian text and photos, moderates spam automatically, and now settles payments in USYC on the Arc blockchain. ARC + USYC INTEGRATION: When a buyer types "mau beli hijab" in WhatsApp, our AI agent (Gemini LLM + Indonesian NLP) classifies intent, matches the listing via TF-IDF semantic search, and executes a USYC transfer on Arc L2. Funds are held in escrow earning ~5% APY yield until the buyer confirms receipt. Arc's near-zero gas fees (0.001 gwei) and ~200ms finality make true nanopayments viable for $2-$50 transactions. TECH STACK: Laravel 12 (backend), Python FastAPI (AI microservice), Node.js (WhatsApp gateway), Arc L2 blockchain, USYC ERC-20, Gemini API, MySQL, Redis. LIVE METRICS: 253 community members, 98 active listings, 1,834 messages processed, 13 product categories, platform running since March 8, 2026 — this is not a demo, it is a production marketplace with real users.

Grab your ideas, spin up compute, and start building what’s next! Start with $100 in AMD Developer Cloud credits and begin building right away. Get access to hands-on tutorials, workshops, and curated learning resources to help you build faster and go further. To unlock credits and join the hackathon, sign up for the AMD AI Developer Program. 🤝 Go solo or team up — ship something real. 💰 $21,500+ total prize pool & 1 × AMD Radeon™ AI PRO R9700 GPU up for grabs. 📍 On-site Venue (May 9-10): MindsDB SF AI Collective 3154 17th St, San Francisco, California, USA 📍On-site participation is by invitation only. Travel and accommodation expenses will not be covered. 🧑‍💻 Developers, builders, and innovators - bring your boldest ideas and let’s turn them into real AI systems on AMD.

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!