Data Sources & Maps
| Data Source | License | Credit |
|---|
| Japan MLIT Property Information Library | CC BY 4.0 | © Ministry of Land, Infrastructure, Transport and Tourism — modified for use |
| Geospatial Information Authority of Japan (GSI) Map Tiles | GSI Content Usage Terms | © Geospatial Information Authority of Japan |
| Japan MLIT Hazard Map Portal | CC BY 4.0 | © Ministry of Land, Infrastructure, Transport and Tourism |
CC BY 4.0: Creative Commons Attribution 4.0 International
Frontend
| Package | License | Copyright |
|---|
| Next.js16.x | MIT | Copyright (c) 2024 Vercel, Inc. |
| React19.x | MIT | Copyright (c) Meta Platforms, Inc. and affiliates. |
| Leaflet1.9.x | BSD-2-Clause | Copyright (c) 2010-2024, Vladimir Agafonkin
Copyright (c) 2010-2011, CloudMade |
| react-leaflet5.x | Hippocratic License 2.1 | Copyright 2020 Paul Le Cam and contributors |
| leaflet-defaulticon-compatibility0.1.x | BSD-2-Clause | Copyright (c) ghybs |
| Recharts3.x | MIT | Copyright (c) 2015-2024 Recharts Group |
| Firebase JS SDK12.x | Apache-2.0 | Copyright (c) Google LLC |
| posthog-js1.x | Apache-2.0 | Copyright 2020 Posthog / Hiberly, Inc.
Copyright 2015 Mixpanel, Inc. |
| Tailwind CSS4.x | MIT | Copyright (c) Tailwind Labs, Inc. |
| jsPDF4.x | MIT | Copyright (c) 2010 James Hall
Copyright (c) 2015-2024 yWorks GmbH |
| html2canvas-pro2.x | MIT | Copyright (c) Niklas von Hertzen
Copyright (c) 2023 yorickshan |
| react-markdown10.x | MIT | Copyright (c) 2015 Espen Hovlandsdal |
| lucide-react1.x | ISC | Copyright (c) 2022 Lucide Contributors |
| clsx2.x | MIT | Copyright (c) Luke Edwards |
| tailwind-merge3.x | MIT | Copyright (c) 2021 Dany Castillo |
| class-variance-authority0.7.x | Apache-2.0 | Copyright (c) Joe Bell |
Note
react-leaflet is provided under the Hippocratic License 2.1, which is not compatible with MIT and similar licences. Its use requires compliance with Human Rights Laws and Human Rights Principles. This service uses it lawfully under those conditions.
