docs: add a donate section

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: KiaroSama

README.md

@@ -937,6 +937,21 @@ Four of these carry a caveat that is part of the feature rather than a footnote:
   that needs a second call, so `get_channel_statistics` resolves what it can and plainly labels
   what it could not — a token is never presented as data.
 
+## Donate
+
+If this project helps you, donations are appreciated.
+
+| Currency | Network | Address |
+| --- | --- | --- |
+| Bitcoin (BTC) | Bitcoin | `bc1qmth5m03pu5hujw5xw5jmywam3jj3sqwqupesdt` |
+| USDT, BNB, USDC, etc. | BEP20 | `0x0Bd0BA443a8B9cf15922bf7f0Bb0a4b495fD06Ef` |
+| USDT, TRX, USDC, etc. | TRC20 | `TWBA3xFTqgZAeAYMxqo85xWnzvty3DcAhw` |
+| Ethereum (ETH) | ERC20 | `0x0Bd0BA443a8B9cf15922bf7f0Bb0a4b495fD06Ef` |
+| TON | TON | `UQCN8Umo_OfOWqImZetQsrNStPcmLkMAKajFyiCOhso23NDb` |
+| Litecoin (LTC) | LTC | `ltc1qntqnnrunadurnw4cshv3qgspywrueyyeyngwuy` |
+| Solana (SOL) | Solana | `7B2wkczUjmkDhETwQuknBL8sUsbuV7nErxc317TmQuwR` |
+| Polygon (POL) | Polygon | `0x0Bd0BA443a8B9cf15922bf7f0Bb0a4b495fD06Ef` |
+
 ## Licence
 
 GNU General Public License v3.0 or later. See [LICENSE](LICENSE) for the licence text and [NOTICE](NOTICE) for the copyright and prior-work attribution.