Copy of Converters and Traders

Bounty Creation: A creator defines a mapping task (e.g. “capture 3D scans of Indoors: a shopping
mall interior” or “map edge case: an unpaved road at night”) and stakes a reward in $UMAP. The task
specifications include location/area, data format (photos, LiDAR, video), quality requirements, and an
expiration date. This is recorded in a bounty smart contract (with metadata stored