HanData (汉数通) Public Data Marketplace
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
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Wuhan doesn't give its public data away — it sells it. A state-run marketplace logged 70,000+ transactions in its first four months, from insurers checking health records in seconds to a live feed off 640 traffic signals.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 4 more in Wuhan · 🪪 Digital government guide · 📡 Data & IoT projects
Wuhan Data Group — a subsidiary tied to the city's state investment holding company, and part of China's first batch of data-circulation pilot cities — began piloting 汉数通 (HanData) in October 2025: a state-run marketplace that licenses processed public data to companies under contract, rather than publishing it as open data. Within roughly four months it had logged more than 70,000 data-product transactions across 1,252 listed products and 707 registered data-flow entities. The clearest use case so far is insurers verifying applicants' health-history data in seconds instead of three to five days, which the operator says lifted risk-identification accuracy by 30% across six months and seven insurer partnerships; a separate feed streams live signal-timing data from 640 intersections into countdown displays and 'green wave' routing. In March 2026 Wuhan connected HanData to China's national data-infrastructure nodes, an early move in the country's unified data market — though every figure so far is the operator's own, with no independent audit found.
📊 Impact
70,000+ data-product transactions, 1,252 listed products and 707 registered data-flow entities within roughly four months of the October 2025 pilot; insurers report health-data checks cut from three-to-five days to seconds with a claimed 30% accuracy gain across six months and seven insurer partnerships; a live feed covers 640 signalised intersections (Wuhan Data Group, self-reported, April 2026).
🎓 Lesson
This is the mirror image of an open-data portal: Wuhan treats its public data as a priced product for licensed buyers rather than a free download, closer in spirit to Shanghai's state-run data exchange than to a transparency platform.
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📎 Cite this project
1001 Smart Cities (2026). “HanData (汉数通) Public Data Marketplace” — Wuhan, China. The Smart City Atlas. https://1001smartcities.org/projects/wuhan-handata-exchange/ (last verified 2026-08-02). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.