Update README (#75)

* Update README

* .

* .

README.md

@@ -16,7 +16,7 @@
 
 ## Overview
 
-Subcoin is a full node implementation of Bitcoin in Rust, built using the [Substrate framework](https://github.com/paritytech/polkadot-sdk).
+Subcoin is a full node implementation of Bitcoin in Rust, built using the [polkadot-sdk (formerly Substrate)](https://github.com/paritytech/polkadot-sdk) framework.
 By leveraging Substrate's modular and flexible architecture, Subcoin aims to offer a robust
 and performant implementation of Bitcoin protocol. It is the first Bitcoin client that
 introduces the decentralized fast sync into the Bitcoin ecosystem, a syncing strategy common
@@ -58,6 +58,18 @@ Contributions to Subcoin are welcome! If you have ideas for improvements, bug fi
 feel free to open an issue or submit a pull request. Make sure to follow the contribution guidelines
 and code of conduct when contributing to the project.
 
+## Donations
+
+Subcoin is an open-source public good project dedicated to advancing decentralized technologies around Bitcoin.
+We are grateful for receiving the [grant](https://github.com/w3f/Grants-Program/pull/2304) of the Web3 Foundation
+for our initial development.
+
+If you believe in our mission and would like to contribute to the continued growth and improvement of Subcoin,
+we welcome your support:
+
+- BTC: `bc1p9nvx58550rlhk29a6urzxg06hmgv9sh5afwdt66md09xwpdytlmqun0j4v`
+- DOT: `12uXLCZZkprwRBhfmhTXdfQE8faQwgNpS76wwmnEbgDwWB9e`
+
 ## License
 
 Subcoin is licensed under the [MIT License](LICENSE). See the LICENSE file for information.