The ETHGlobal Buenos Aires Hackathon has announced its top 10 projects from a pool of 475 entries, showcasing innovations in on-chain payments, AI agents, cross-chain liquidity, and real-world data integration. Notable projects include Paybot's gas-free IoT micropayments, JetLagged's flight delay prediction market, and Hubble's on-chain autonomous trading agent. Other highlights are Payload Exchange's multi-method payment agent layer, Yoga's multi-range LP NFT management, and LensMint's photo-to-mint zero-knowledge NFTs. Additionally, Halo offers receipt-on-chain rewards, zkx402 focuses on privacy payments and content verification, Aqua0 enables cross-chain shared liquidity, and BMCP uses Bitcoin signatures to trigger EVM transactions.