CapaCloud is a peer-to-peer neocloud platform for pay-per-use GPU rentals. Rent or monetize GPU power with blockchain payments, full system control, and a climate-friendly, carbon-neutral cloud alternative to AWS. CapaCloud is a decentralized GPU rental marketplace that connects users who need compute power with GPU owners through a peer-to-peer neocloud network. CapaCloud also promotes sustainability by utilizing existing consumer GPUs distributed around the world rather than relying entirely on energy-intensive centralized data centers. According to the platform, this approach can significantly reduce energy consumption and carbon footprint compared to traditional cloud infrastructures. Overall, CapaCloud aims to build a decentralized “neocloud” ecosystem where computing resources are shared globally, enabling affordable, flexible, and scalable GPU computing for AI development, rendering, simulations, and other demanding workloads.