{
  "timestamp": "2026-10-05T00:29:25Z",
  "provider": "OpenStreetMap coastal wetland and harbor-access geometry",
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  "license": "ODbL 1.0",
  "licenseUrl": "https://www.openstreetmap.org/copyright",
  "reference": "https://swj.sh.gov.cn/shshyglswzx-xwdt/20220718/91cf7191971d444d98f2771f5645caf2.html",
  "imagery": "EOxCloudless Sentinel-2 2025, same alignment as the satellite layer",
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