"Grassland is an open-source, anonymous, and completely trustless, P2P network of incentivised computer vision software that turns a 2D video feed from any single-perspective camera into a (politically) stateless, indelible public record of the lives of humans, physical assets, and environmental changes as a real-time, 3D simulation similar to the games SimCity® or Civilization®, but lets you also rewind time and analyze data from the past."