The Solana x402 Hackathon has revealed its five main track winners, showcasing innovative solutions in AI and blockchain integration. The project i³ enables the trading of AI models with revenue sharing based on usage. PlaiPin empowers low-cost IoT devices with on-chain self-payment capabilities. x402 Shopify Commerce facilitates rapid AI-driven order automation for online stores. Amiko establishes on-chain credit and evaluation systems for AI services. Lastly, MoneyMQ simplifies x402 payment integration through configuration files.