chore: update README

LICENSE

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+MIT License
+
+Copyright (c) 2023-present, The RSS3 Community
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+<!-- markdownlint-disable -->
 <p align="center">
-<img src="https://rss3.mypinata.cloud/ipfs/QmUG6H3Z7D5P511shn7sB4CPmpjH5uZWu4m5mWX7U3Gqbu" alt="RSS3" width="300">
+  <a href="https://rss3.io" target="_blank" rel="noopener noreferrer">
+    <!-- RSS3 White logo, used the hosting for an absolute link -->
+    <img width="180" src="https://cdn.jsdelivr.net/gh/rss3-network/rss3-assets/logo.svg" alt="RSS3 logo">
+  </a>
 </p>
-<h1 align="center">RSS3 Hub Data</h1>
+<p align="center">
+  <a href="https://link.rss3.io/x"><img src="https://img.shields.io/twitter/follow/rss3_?color=%230072ff" alt="follow RSS3 on X"></a>
+  <a href="https://link.rss3.io/discord"><img src="https://img.shields.io/badge/chat-discord-blue?style=flat&logo=discord&color=%230072ff" alt="Join RSS3 Discord"></a>
+  <!-- add NPM and other badges when needed -->
+</p>
+<!-- markdownlint-enable -->
 
-Synchronize data from RSS3 nodes every 10 minutes
+# RSS3 Data Sublayer v0.2
 
-**View [all RSS3 files](https://github.com/NaturalSelectionLabs/RSS3-Hub-Data/tree/main/storage)**
+The RSS3 Data Sublayer (DSL) v0.2 was a version that served the RSS3 Network Testnet between late 2021 and Oct 2022.
 
-**View [RSS3 statistics data](https://github.com/NaturalSelectionLabs/RSS3-Hub-Data/tree/main/statistics)**
+The development and operation of this version provided invaluable practical experience that the RSS3 engineers leveraged for enhancing future iterations.
 
-[![RSS3 Data Statistics](https://github.com/NaturalSelectionLabs/RSS3-Hub-Data/actions/workflows/statistics.yml/badge.svg)](https://github.com/NaturalSelectionLabs/RSS3-Hub-Data/actions/workflows/statistics.yml)
-> Statistics data are automatically generated by [GitHub Actions](https://github.com/NaturalSelectionLabs/RSS3-Hub-Data/actions) by running [statistics script](https://github.com/NaturalSelectionLabs/RSS3-Hub-Data/blob/main/.github/workflows/statistics.yml)
+It is no longer being maintained and has been superseded by the subsequent DSL versions.
 
-Various integration or statistics ideas are welcomed
+## License
 
-Related Projects
+<!-- We use MIT as it's almost unrestricted. -->
 
-- [RSS3](https://github.com/NaturalSelectionLabs/RSS3)
-- [Web3Pass](https://github.com/NaturalSelectionLabs/Web3Pass)
-- [RSS3 Hub Dashboard](https://github.com/NaturalSelectionLabs/RSS3-Hub-Dashboard)
+[MIT](LICENSE).