Grass Network is a DePIN protocol that turns unused residential bandwidth into a distributed data-collection layer for AI and web-scale applications. Emerging from the rise of large models and aggressive web scraping limits, it targets the bottlenecks and centralization risks of traditional data brokers by rewarding users directly for opt-in bandwidth contributions. By routing traffic through a global mesh of user-run nodes with built-in privacy controls, Grass Network provides developers with high-quality, geographically diverse web data while building a permissionless, incentive-aligned data marketplace.